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Charge Transfer Reactions

Abstract

Charge transfer, or charge exchange, describes a process in which an ion takes one or more electrons from another atom. Investigations of this fundamental process have accompanied atomic physics from its very beginning, and have been extended to astrophysical scenarios already many decades ago. Yet one important aspect of this process, i.e. its high efficiency in generating X-rays, was only revealed in 1996, when comets were discovered as a new class of X-ray sources. This finding has opened up an entirely new field of X-ray studies, with great impact due to the richness of the underlying atomic physics, as the X-rays are not generated by hot electrons, but by ions picking up electrons from cold gas. While comets still represent the best astrophysical laboratory for investigating the physics of charge transfer, various studies have already spotted a variety of other astrophysical locations, within and beyond our solar system, where X-rays may be generated by this process. They range from planetary atmospheres, the heliosphere, the interstellar medium and stars to galaxies and clusters of galaxies, where charge transfer may even be observationally linked to dark matter. This review attempts to put the various aspects of the study of charge transfer reactions into a broader historical context, with special emphasis on X-ray astrophysics, where the discovery of cometary X-ray emission may have stimulated a novel look at our universe.

References

  1. R. Ali, C.L. Cocke, M.L.A. Raphaelian, M. Stockli, Multielectron processes in 10-keV/u Arq+ (5≤q≤17) on Ar collisions. Phys. Rev. A 49, 3586–3596 (1994). doi:10.1103/PhysRevA.49.3586

  2. R.J. Allan, R.E.S. Clegg, A.S. Dickinson, D.R. Flower, Mg-H(+) charge transfer and MG line intensities in gaseous nebulae. Mon. Not. R. Astron. Soc. 235, 1245–1255 (1988)

  3. S.K. Allison, S.D. Warshaw, Passage of heavy particles through matter. Rev. Mod. Phys. 25, 779–817 (1953). doi:10.1103/RevModPhys.25.779

  4. M. Arnaud, N. Aghanim, R. Gastaud, D.M. Neumann, D. Lumb, U. Briel, B. Altieri, S. Ghizzardi, J. Mittaz, T.P. Sasseen, W.T. Vestrand, XMM-Newton observation of the Coma Galaxy cluster. The temperature structure in the central region. Astron. Astrophys. 365, 67–73 (2001). doi:10.1051/0004-6361:20000195

  5. W. Baade, F. Zwicky, Remarks on super-novae and cosmic rays. Phys. Rev. 46(1), 76-77 (1934). doi:10.1103/PhysRev.46.76.2

  6. S.L. Baliunas, S.E. Butler, Silicon lines as spectral diagnostics—The effect of charge transfer. Astrophys. J. 235, 45–48 (1980). doi:10.1086/183154

  7. S.J. Bame, A.J. Hundhausen, J.R. Asbridge, I.B. Strong, Solar wind ion composition. Phys. Rev. Lett. 20, 393–395 (1968). doi:10.1103/PhysRevLett.20.393

  8. S.J. Bame, D.J. McComas, B.L. Barraclough, J.L. Phillips, K.J. Sofaly, J.C. Chavez, B.E. Goldstein, R.K. Sakurai, The ULYSSES solar wind plasma experiment. Astron. Astrophys. Suppl. Ser. 92, 237–265 (1992)

  9. S. Barabash, R. Lundin, T. Zarnowiecki, S. Grzedzielski, Diagnostic of energetic neutral particles at Mars by the ASPERA-C instrument for the Mars 96 mission. Adv. Space Res. 16, 81 (1995). doi:10.1016/0273-1177(95)00212-W

  10. P. Beiersdorfer, Laboratory X-ray astrophysics. Annu. Rev. Astron. Astrophys. 41, 343–390 (2003). doi:10.1146/annurev.astro.41.011802.094825

  11. P. Beiersdorfer, L. Schweikhard, R. Olson, G.V. Brown, S.B. Utter, J.R. Crespo López-Urrutia, K. Widmann, X-ray measurements of charge transfer reactions involving cold, very highly charged ions. Phys. Scr. T 80, 121–123 (1999). doi:10.1238/Physica.Topical.080a00121

  12. P. Beiersdorfer, R.E. Olson, G.V. Brown, H. Chen, C.L. Harris, P.A. Neill, L. Schweikhard, S.B. Utter, K. Widmann, X-ray emission following low-energy charge exchange collisions of highly charged ions. Phys. Rev. Lett. 85(24), 5090–5093 (2000). doi:10.1103/PhysRevLett.85.5090

  13. P. Beiersdorfer, C.M. Lisse, R.E. Olson, G.V. Brown, H. Chen, X-ray velocimetry of solar wind ion impact on comets. Astrophys. J. 549, 47 (2001)

  14. P. Beiersdorfer, K.R. Boyce, G.V. Brown, H. Chen, S.M. Kahn, R.L. Kelley, M. May, R.E. Olson, F.S. Porter, C.K. Stahle, W.A. Tillotson, Laboratory simulation of charge exchange—produced X-ray emission from comets. Science 300, 1558–1559 (2003)

  15. A. Bhardwaj, X-Ray Emission from Jupiter, Saturn, and Earth: A short review. ArXiv Astrophysics e-prints, 2006

  16. A. Bhardwaj, R.F. Elsner, J.H.J. Waite, G.R. Gladstone, T.E. Cravens, P.G. Ford, Chandra observation of an X-ray flare at Saturn: evidence of direct solar control on Saturn’s disk X-ray emissions. Astrophys. J. 624, 121 (2005a)

  17. A. Bhardwaj, G. Branduardi-Raymont, R.F. Elsner, G.R. Gladstone, G. Ramsay, P. Rodriguez, R. Soria, J.H. Waite Jr., T.E. Cravens, Solar control on Jupiter’s equatorial X-ray emissions: 26–29 November 2003 XMM-Newton observation. Geophys. Res. Lett. 32, 3 (2005b)

  18. A. Bhardwaj, R.F. Elsner, J.H.J. Waite, G.R. Gladstone, T.E. Cravens, P.G. Ford, The discovery of oxygen Kα X-ray emission from the rings of saturn. Astrophys. J. 627, 73–76 (2005c). doi:10.1086/431933

  19. A. Bhardwaj, R.F. Elsner, G.R. Gladstone, J.H. Waite, G. Branduardi-Raymont, T.E. Cravens, P.G. Ford, Low- to middle-latitude X-ray emission from Jupiter. J. Geophys. Res. 111(A10), 11225 (2006). doi:10.1029/2006JA011792

  20. A. Bhardwaj, R.F. Elsner, G. Randall Gladstone, T.E. Cravens, C.M. Lisse, K. Dennerl, G. Branduardi-Raymont, B.J. Wargelin, J. Hunter Waite, I. Robertson, N. Østgaard, P. Beiersdorfer, S.L. Snowden, V. Kharchenko, X-rays from solar system objects. Planet. Space Sci. 55, 1135–1189 (2007). doi:10.1016/j.pss.2006.11.009

  21. L. Biermann, Kometenschweife und solare Korpuskularstrahlung. Z. Astrophys. 29, 274 (1951)

  22. L. Biermann, Physical processes in comet tails and their relation to solar activity. Phys. Comètes, Extr. Mem. Soc. R. Sci. Liège, 4 Sér. XIII(I–II), 291 (1953)

  23. R. Bingham, J.M. Dawson, V.D. Shapiro, D.A. Mendis, B.J. Kellett, Generation of X-rays from Comet C/Hyakutake 1996 B2. Science 275, 49–51 (1997)

  24. R. Bingham, J.M. Dawson, V.D. Shapiro, D.A. Mendis, B.J. Kellett, Production of X-rays by comet Hyakutake. Adv. Space Res. 22(7), 1043 (1998)

  25. R.J. Blint, W.D. Watson, R.B. Christensen, Calculation of the cross section for C IV-H charge exchange: significance for interstellar X-rays particles. Astrophys. J. 205, 634–637 (1976). doi:10.1086/154320

  26. D. Bodewits, R. Hoekstra, Electron capture in collisions between O6+ ions and H2O molecules. Phys. Rev. A 76(3), 032703 (2007). doi:10.1103/PhysRevA.76.032703

  27. D. Bodewits, R. Hoekstra, B. Seredyuk, R.W. McCullough, G.H. Jones, A.G.G.M. Tielens, Charge exchange emission from solar wind helium ions. Astrophys. J. 642, 593–605 (2006). doi:10.1086/500731

  28. D. Bodewits, D.J. Christian, M. Torney, M. Dryer, C.M. Lisse, K. Dennerl, T.H. Zurbuchen, S.J. Wolk, A.G.G.M. Tielens, R. Hoekstra, Spectral analysis of the Chandra comet survey. Astron. Astrophys. 469, 1183–1195 (2007). doi:10.1051/0004-6361:20077410

  29. N. Bohr, K. Lindhard, Electron capture and loss by heavy ions penetrating through matter. K. Dan. Vidensk. Selsk. Mat. Fys. Medd. 28, 1 (1954)

  30. A. Boileau, M. Von Hellermann, L.D. Horton, J. Spence, H.P. Summers, The deduction of low-Z ion temperature and densities in the JET tokamak using charge exchange recombination spectroscopy. Plasma Phys. Control. Fusion 31, 779–804 (1989). doi:10.1088/0741-3335/31/5/006

  31. S.N. Borovikov, N.V. Pogorelov, G.P. Zank, I.A. Kryukov, Consequences of the heliopause instability caused by charge exchange. Astrophys. J. 682, 1404–1415 (2008). doi:10.1086/589634

  32. S. Bowyer, A. Vikhlinin, Detection of emission from warm-hot gas in the Universe with XMM? J. Korean Astron. Soc. 37, 579–581 (2004)

  33. G. Branduardi-Raymont, R.F. Elsner, G.R. Gladstone, G. Ramsay, P. Rodriguez, R. Soria, J.H. Waite, First observation of Jupiter by XMM-Newton. Astron. Astrophys. 424, 331–337 (2004)

  34. G. Branduardi-Raymont, A. Bhardwaj, R.F. Elsner, G.R. Gladstone, G. Ramsay, P. Rodriguez, R. Soria, J.H. Waite Jr., T.E. Cravens, XMM-Newton observations of X-ray emission from Jupiter, in The X-ray Universe 2005, ed. by A. Wilson. ESA Special Publication, vol. 604 (2006), pp. 15–20

  35. G. Branduardi-Raymont, A. Bhardwaj, R.F. Elsner, G.R. Gladstone, G. Ramsay, P. Rodriguez, R. Soria, J.H. Waite Jr., T.E. Cravens, A study of Jupiter’s aurorae with XMM-Newton. Astron. Astrophys. 463, 761–774 (2007a). doi:10.1051/0004-6361:20066406

  36. G. Branduardi-Raymont, A. Bhardwaj, R.F. Elsner, G.R. Gladstone, G. Ramsay, P. Rodriguez, R. Soria, J.H. Waite, T.E. Cravens, Latest results on Jovian disk X-rays from XMM-Newton. Planet. Space Sci. 55, 1126–1134 (2007b). doi:10.1016/j.pss.2006.11.017

  37. G. Branduardi-Raymont, R.F. Elsner, M. Galand, D. Grodent, T.E. Cravens, P. Ford, G.R. Gladstone, J.H. Waite, Spectral morphology of the X-ray emission from Jupiter’s aurorae. J. Geophys. Res. 113(A12), 2202 (2008). doi:10.1029/2007JA012600

  38. G. Branduardi-Raymont, A. Bhardwaj, R.F. Elsner, P. Rodriguez, X-rays from Saturn: a study with XMM-Newton and Chandra over the years 2002–05. Astron. Astrophys. 510(26), 260000 (2010). doi:10.1051/0004-6361/200913110

  39. J.N. Bregman, E.J. Lloyd-Davies, On the lack of a soft X-ray excess from clusters of galaxies. Astrophys. J. 644, 167–173 (2006). doi:10.1086/503551

  40. E.J. Bunce, S.W.H. Cowley, T.K. Yeoman, Jovian cusp processes: implications for the polar aurora. J. Geophys. Res. 109(A18), 9 (2004). doi:10.1029/2003JA010280

  41. R.W. Bussard, R. Ramaty, K. Omidvar, X-ray and gamma-ray line production by nonthermal ions. Astrophys. J. 220, 353–362 (1978). doi:10.1086/155913

  42. C.D. Cantrell, M.O. Scully, K. Boyer, Review of soft X-ray lasers using charge exchange. NASA STI/Recon Technical Report N 75, 27365 (1974)

  43. P.G. Carolan, B.P. Duval, A.R. Field, S.J. Fielding, N.C. Hawkes, N.J. Peacock, G. Fussmann, G. Janeschitz, J. Hofmann, K.H. Behringer, R.C. Isler, Charge-exchange-excited line radiation in a tokamak (ASDEX) with neutral-particle-beam injection. Phys. Rev. A 35, 3454–3471 (1987). doi:10.1103/PhysRevA.35.3454

  44. J.A. Carter, S. Sembay, Identifying XMM-Newton observations affected by solar wind charge exchange. Part I. Astron. Astrophys. 489, 837–848 (2008). doi:10.1051/0004-6361:200809997

  45. J.A. Carter, S. Sembay, A.M. Read, A high charge state coronal mass ejection seen through solar wind charge exchange emission as detected by XMM-Newton. Mon. Not. R. Astron. Soc. 402, 867–878 (2010). doi:10.1111/j.1365-2966.2009.15985.x

  46. J.W. Chamberlain, Excitation in Nebulae: electron-hydrogen inelastic collisions in a radiative H II region. Astrophys. J. 124, 662 (1956). doi:10.1086/146276

  47. J. Chesnel, B. Sulik, H. Merabet, C. Bedouet, F. Frémont, X. Husson, M. Grether, A. Spieler, N. Stolterfoht, Enhancement of dielectronic processes in Ne10+ + He collisions at low keV energies. Phys. Rev. A 57, 3546–3553 (1998). doi:10.1103/PhysRevA.57.3546

  48. B. Chi, L. Liu, J. Wang, NUCLEAR PHYSICS: Calculations of state-selective differential cross sections for charge transfer in collisions between O3+ and H2. Chin. Phys. B 17, 2890–2896 (2008). doi:10.1088/1674-1056/17/8/023

  49. R.B. Christensen, W.D. Watson, R.J. Blint, Calculation of the cross section for N IV-H charge-exchange significance for the intercloud gas. Astrophys. J. 213, 712–715 (1977). doi:10.1086/155201

  50. D.J. Christian, D. Bodewits, C.M. Lisse, K. Dennerl, S.J. Wolk, H. Hsieh, T.H. Zurbuchen, L. Zhao, Chandra observations of comets 8p/Tuttle and 17p/Holmes during solar minimum. Astrophys. J. Suppl. Ser. 187, 447–459 (2010). doi:10.1088/0067-0049/187/2/447

  51. K.R. Cornelius, K. Wojtkowski, R.E. Olson, State-selective cross section scalings for electron capture collisions. J. Phys. B, At. Mol. Phys. 33, 2017–2035 (2000). doi:10.1088/0953-4075/33/11/304

  52. D.P. Cox, Modeling the local bubble, in Lecture Notes in Physics, vol. 506 (Springer, Berlin, 1998), pp. 121–131

  53. T.E. Cravens, Comet Hyakutake X-ray source: Charge transfer of solar wind heavy ions. Geophys. Res. Lett. 24, 105–108 (1997)

  54. T.E. Cravens, Heliospheric X-ray emission associated with charge transfer of the solar wind with interstellar neutrals. Astrophys. J. 532, 153 (2000)

  55. T.E. Cravens, A.N. Maurellis, X-ray emission from scattering and fluorescence of solar X-rays at Venus and Mars. Geophys. Res. Lett. 28(15), 3043–3046 (2001)

  56. T.E. Cravens, E. Howell, J.H. Waite, G.R. Gladstone, Auroral oxygen precipitation at Jupiter. J. Geophys. Res. 100, 17153–17162 (1995). doi:10.1029/95JA00970

  57. T.E. Cravens, I.P. Robertson, S.L. Snowden, Temporal variations of geocoronal and heliospheric X-ray emission associated with the solar wind interaction with neutrals. J. Geophys. Res. 106, 24883–24892 (2001)

  58. T.E. Cravens, J.H. Waite, T.I. Gombosi, N. Lugaz, G.R. Gladstone, B.H. Mauk, R.J. MacDowall, Implications of Jovian X-ray emission for magnetosphere-ionosphere coupling. J. Geophys. Res. 108(A12), 25-1 (2003). doi:10.1029/2003JA010050

  59. T.E. Cravens, J. Clark, A. Bhardwaj, R. Elsner, J.H. Waite, A.N. Maurellis, G.R. Gladstone, G. Branduardi-Raymont, X-ray emission from the outer planets: Albedo for scattering and fluorescence of solar X rays. J. Geophys. Res. 111(A10), 7308 (2006). doi:10.1029/2005JA011413

  60. J.A. Crawford, R.P. Kraft, An interpretation of AE Aquarii. Astrophys. J. 123, 44 (1956). doi:10.1086/146128

  61. C.C. Curtis, K.C. Hsieh, Remote sensing of planetary magnetospheres: imaging via energetic neutral atoms, in Outstanding Problems in Solar System Plasma Physics: Theory and Instrumentation (1989), pp. 247–251

  62. A. Dalgarno, A. Sternberg, Electron temperatures of astrophysical plasmas. Astrophys. J. 257, 87–90 (1982). doi:10.1086/183814

  63. A. Dalgarno, S.E. Butler, T.G. Heil, Charge transfer of doubly charged oxygen ions in helium. J. Geophys. Res. 85, 6047 (1980). doi:10.1029/JA085iA11p06047

  64. J.W. den Herder, A.C. Brinkman, S.M. Kahn, G. Branduardi-Raymont, K. Thomsen, H. Aarts, M. Audard, J.V. Bixler, A.J. den Boggende, J. Cottam, T. Decker, L. Dubbeldam, C. Erd, H. Goulooze, M. Güdel, P. Guttridge, C.J. Hailey, K.A. Janabi, J.S. Kaastra, P.A.J. de Korte, B.J. van Leeuwen, C. Mauche, A.J. McCalden, R. Mewe, A. Naber, F.B. Paerels, J.R. Peterson, A.P. Rasmussen, K. Rees, I. Sakelliou, M. Sako, J. Spodek, M. Stern, T. Tamura, J. Tandy, C.P. de Vries, S. Welch, A. Zehnder, The reflection grating spectrometer on board XMM-Newton. Astron. Astrophys. 365, 7–17 (2001)

  65. J.W. den Herder, R.L. Kelley, K. Mitsuda, L. Piro, S.R. Bandler, P. Bastia, K.R. Boyce, M. Bruin, J.A. Chervenak, L. Colasanti, W.B. Doriese, M. Dipirro, M.E. Eckart, Y. Ezoe, E. Figueroa-Feliciano, L. Ferrari, R. Fujimoto, F. Gatti, K.C. Gendreau, L. Gottardi, R. den Hartog, G.C. Hilton, H. Hoevers, K.D. Irwin, Y. Ishisaki, A. Kashani, C.A. Kilbourne, P. de Korte, J. van der Kuur, C. Macculi, T. Mineo, J.H. Nieland, T. Ohashi, S. Paltani, E. Perinati, F.S. Porter, P.J. Shirron, S.J. Smith, Y. Takei, M. Tashiro, G. Torrioli, M. Tsujimoto, H. van Weers, N.Y. Yamasaki, The X-ray microcalorimeter spectrometer onboard of IXO, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, vol. 7732 (2010). doi:10.1117/12.856018

  66. K. Dennerl, Discovery of X-rays from Mars with Chandra. Astron. Astrophys. 394, 1119 (2002)

  67. K. Dennerl, X-rays from Mars. Space Sci. Rev. 126, 403–433 (2006). doi:10.1007/s11214-006-9028-7

  68. K. Dennerl, X-rays from Venus observed with Chandra. Planet. Space Sci. 56, 1414–1423 (2008). doi:10.1016/j.pss.2008.03.008

  69. K. Dennerl, X-rays from nonmagnetic planets, in Advances in Geosciences, vol. 15, ed. by A. Bhardwaj et al. (World Scientific, Singapore, 2009), pp. 53–74

  70. K. Dennerl, J. Englhauser, J. Trümper, Comet C/1990 N1 (Tsuchiya-Kiuchi). IAU Circ. 6404 (1996a)

  71. K. Dennerl, J. Englhauser, J. Trümper, X-ray detections of comets. IAU Circ. 6413 (1996b)

  72. K. Dennerl, J. Englhauser, J. Trümper, Comet C/1991 A2 (Arai). IAU Circ. 6472 (1996c)

  73. K. Dennerl, J. Englhauser, J. Truemper, C. Lisse, Comet C/1996 Q1 (Tabur). IAU Circ. 6495 (1996d)

  74. K. Dennerl, J. Englhauser, J. Trümper, X-ray emissions from comets detected in the Röntgen X-ray satellite all-sky survey. Science 277, 1625–1630 (1997)

  75. K. Dennerl, V. Burwitz, J. Englhauser, C. Lisse, S. Wolk, Discovery of X-rays from Venus with Chandra. Astron. Astrophys. 386, 319 (2002)

  76. K. Dennerl, B. Aschenbach, V. Burwitz, J. Englhauser, C.M. Lisse, P.M. Rodriguez-Pascual, A major step in understanding the X-ray generation in comets: recent progress obtained with XMM-Newton, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, vol. 4851, ed. by J.E. Truemper, H.D. Tananbaum (2003), pp. 277–288. doi:10.1117/12.461137

  77. K. Dennerl, C.M. Lisse, A. Bhardwaj, V. Burwitz, J. Englhauser, H. Gunell, M. Holmström, F. Jansen, V. Kharchenko, P.M. Rodríguez-Pascual, First observation of Mars with XMM-Newton: high resolution X-ray spectroscopy with RGS. Astron. Astrophys. 451, 709 (2006)

  78. K. Dennerl et al. (2011, in preparation)

  79. R. Dörner, V. Mergel, O. Jagutzki, L. Spielberger, J. Ullrich, R. Moshammer, H. Schmidt-Böcking, Cold target recoil ion momentum spectroscopy: a ‘momentum microscope’ to view atomic collision dynamics. Phys. Rep. 330, 95–192 (2000). doi:10.1016/S0370-1573(99)00109-X

  80. K. Ebisawa, S. Yamauchi, Y. Tanaka, K. Koyama, Y. Ezoe, A. Bamba, M. Kokubun, Y. Hyodo, M. Tsujimoto, H. Takahashi, Spectral study of the galactic ridge X-ray emission with Suzaku. Publ. Astron. Soc. Jpn. 60, 223 (2008)

  81. E. Edgu-Fry, A. Wech, J. Stuhlman, T.G. Lee, C.D. Lin, C.L. Cocke, Cold-target recoil-ion momentum spectroscopy studies of capture from atomic and molecular hydrogen by O8+ and Ar8+. Phys. Rev. A 69(5), 052714 (2004). doi:10.1103/PhysRevA.69.052714

  82. R.F. Elsner, G.R. Gladstone, J.H. Waite, F.J. Crary, R.R. Howell, R.E. Johnson, P.G. Ford, A.E. Metzger, K.C. Hurley, E.D. Feigelson, G.P. Garmire, A. Bhardwaj, D.C. Grodent, T. Majeed, A.F. Tennant, M.C. Weisskopf, Discovery of soft X-ray emission from Io, Europa, and the Io Plasma Torus. Astrophys. J. 572, 1077–1082 (2002)

  83. R.F. Elsner, N. Lugaz, J.H. Waite Jr., T.E. Cravens, G.R. Gladstone, P. Ford, D. Grodent, A. Bhardwaj, R.J. MacDowall, M.D. Desh, T. Majeed, Simultaneous Chandra X ray, Hubble Space Telescope ultraviolet, and Ulysses radio observations of Jupiter’s aurora. J. Geophys. Res. 110, 1207 (2005a)

  84. R.F. Elsner, B.D. Ramsey, J.H. Waite, P. Rehak, R.E. Johnson, J.F. Cooper, D.A. Swartz, X-ray probes of magnetospheric interactions with Jupiter’s auroral zones, the Galilean satellites, and the Io plasma torus. Icarus 178, 417–428 (2005b). doi:10.1016/j.icarus.2005.06.006

  85. R.C. Elton, R.H. Dixon, J.F. Seely, X-ray laser pumping and charge transfer, in Adaptive Optics and Short Wavelength Sources, ed. by S.F. Jacobs, M. Sargent III, M.O. Scully (1978), pp. 243–265

  86. H.J. Fahr, Charge-transfer interactions between solar wind protons and neutral particles in the vicinity of the Sun. Nature 219, 473–474 (1968). doi:10.1038/219473a0

  87. G.B. Field, G. Steigman, Charge transfer and ionization equilibrium in the interstellar medium. Astrophys. J. 166, 59 (1971). doi:10.1086/150941

  88. A. Finoguenov, U.G. Briel, J.P. Henry, XMM-Newton discovery of an X-ray filament in Coma. Astron. Astrophys. 410, 777–784 (2003). doi:10.1051/0004-6361:20031319

  89. L.A. Frank, E.L. Ackerson, J.H. Wolfe, J.D. Mihalov, Observations of Plasmas in the Jovian Magnetosphere, 1975

  90. M.J. Freyberg, On the zero-level of the soft X-ray background, in Lecture Notes in Physics, vol. 506 (Springer, Berlin, 1998), pp. 113–116

  91. R. Fujimoto, K. Mitsuda, D. McCammon, Y. Takei, M. Bauer, Y. Ishisaki, S.F. Porter, H. Yamaguchi, K. Hayashida, N.Y. Yamasaki, Evidence for solar-wind charge-exchange X-ray emission from the Earth’s magnetosheath. Publ. Astron. Soc. Jpn. 59, 133–140 (2007)

  92. H.O. Funsten, F. Allegrini, G.B. Crew, R. DeMajistre, P.C. Frisch, S.A. Fuselier, M. Gruntman, P. Janzen, D.J. McComas, E. Möbius, B. Randol, D.B. Reisenfeld, E.C. Roelof, N.A. Schwadron, Structures and spectral variations of the outer heliosphere in IBEX energetic neutral atom maps. Science 326, 964 (2009). doi:10.1126/science.1180927

  93. S.A. Fuselier, E.G. Shelley, B.E. Goldstein, R. Goldstein, M. Neugebauer, W.H. Ip, H. Balsiger, H. Rème, Observations of solar wind ion charge exchange in the comet Halley coma. Astrophys. J. 379, 734 (1991)

  94. S.A. Fuselier, F. Allegrini, H.O. Funsten, A.G. Ghielmetti, D. Heirtzler, H. Kucharek, O.W. Lennartsson, D.J. McComas, E. Möbius, T.E. Moore, S.M. Petrinec, L.A. Saul, J.A. Scheer, N. Schwadron, P. Wurz, Width and variation of the ENA flux ribbon observed by the Interstellar Boundary Explorer. Science 326, 962 (2009). doi:10.1126/science.1180981

  95. M. Galeazzi, A. Gupta, K. Covey, E. Ursino, XMM-Newton observations of the diffuse X-ray background. Astrophys. J. 658, 1081–1087 (2007). doi:10.1086/512032

  96. A.A. Galeev, T.E. Cravens, T.I. Gombosi, Solar wind stagnation near comets. Astrophys. J. 289, 807 (1985)

  97. H. Geiger, E. Marsden, On a diffuse reflection of the α-particles. Proc. R. Soc. Lond. Ser. A, Math. Phys. Sci. 82, 495–500 (1909)

  98. R. Giacconi, H. Gursky, F.R. Paolini, Evidence for X rays from sources outside the solar system. Phys. Rev. Lett. 9, 439 (1962)

  99. R. Giacconi, Nobel lecture: The dawn of X-ray astronomy. Rev. Mod. Phys. 75(3), 995 (2003). doi:10.1103/RevModPhys.75.995

  100. G.R. Gladstone, J.H. Waite, D. Grodent, W.S. Lewis, F.J. Crary, R.F. Elsner, M.C. Weisskopf, T. Majeed, J.M. Jahn, A. Bhardwaj, J.T. Clarke, D.T. Young, M.K. Dougherty, S.A. Espinosa, T.E. Cravens, A pulsating auroral X-ray hot spot on Jupiter. Nature 415, 1000–1003 (2002)

  101. T.I. Gombosi, M. Horanyi, K. Kecskemety, T.E. Cravens, A.F. Nagy, Charge exchange in solar wind-cometary interactions. Astrophys. J. 268, 889–898 (1983). doi:10.1086/161011

  102. J.B. Greenwood, I.D. Williams, S.J. Smith, A. Chutjian, Measurement of charge exchange and X-ray emission cross sections for solar wind-comet interactions. Astrophys. J. 533, 175 (2000)

  103. J.B. Greenwood, I.D. Williams, S.J. Smith, A. Chutjian, Experimental investigation of the processes determining X-ray emission intensities from charge-exchange collisions. Phys. Rev. A 63(6), 062707 (2001). doi:10.1103/PhysRevA.63.062707

  104. S. Grzedzielski, D. Rucinski, Expected beams of energetic neutral atoms in the outer heliosphere, in Physics of the Outer Heliosphere, ed. by S. Grzedzielski, D.E. Page (1990), pp. 367–370

  105. H. Gunell, E. Kallio, R. Jarvinen, P. Janhunen, M. Holmström, K. Dennerl, Simulations of solar wind charge exchange X-ray emissions at Venus. Geophys. Res. Lett. 34, 3107 (2007). doi:10.1029/2006GL028602

  106. A. Gupta, M. Galeazzi, D. Koutroumpa, R. Smith, R. Lallement, Properties of the diffuse X-ray background toward MBM20 with Suzaku. Astrophys. J. 707, 644–651 (2009). doi:10.1088/0004-637X/707/1/644

  107. J.P. Halpern, J.E. Grindlay, X-ray photoionized nebulae. Astrophys. J. 242, 1041–1055 (1980). doi:10.1086/158535

  108. M. Harwit, F. Hoyle, Plasma dynamics in comets. II. Influence of magnetic fields. Astrophys. J. 135, 875 (1962). doi:10.1086/147331

  109. A.A. Hasan, F. Eissa, R. Ali, D.R. Schultz, P.C. Stancil, State-selective charge transfer studies relevant to solar wind-comet interactions. Astrophys. J. 560, 201 (2001)

  110. L. Haser, Distribution d’intensite dans la tete d’une comete. Bull. Soc. R. Sci. Liège 43, 740–750 (1957)

  111. D.B. Henley, R.L. Shelton, Comparing Suzaku and XMM-Newton observations of the soft X-ray background: evidence for solar wind charge exchange emission. Astrophys. J. 676, 335–350 (2008). doi:10.1086/528924

  112. M. Holmström, S. Barabash, E. Kallio, X-ray imaging of the solar wind-Mars interaction. Geophys. Res. Lett. 28(7), 1287–1290 (2001)

  113. M. Holmström, S. Barabash, E. Kallio, The solar wind interaction with Venus and Mars: Energetic neutral atom and X-ray imaging, in 34th COSPAR Scientific Assembly. COSPAR, Plenary Meeting, vol. 34 (2002)

  114. M. Horanyi, T.E. Cravens, J.H. Waite Jr., The precipitation of energetic heavy ions into the upper atmosphere of Jupiter. J. Geophys. Res. 93, 7251–7271 (1988). doi:10.1029/JA093iA07p07251

  115. K.C. Hsieh, C.C. Curtis, A model for the spatial and energy distributions of energetic neutral atoms produced within the Saturn/Titan plasma system. Geophys. Res. Lett. 15, 772–775 (1988). doi:10.1029/GL015i008p00772

  116. K.C. Hsieh, K. Shih, D.J. McComas, S.T. Wu, C.C. Wu, Forecasting the arrival of fast coronal-mass ejecta at Earth by the detection of 2–20 keV neutral atoms, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, ed. by S. Chakrabarti. Presented at the Society of Photo-Optical Instrumentation Engineers (SPIE) Conference, vol. 1744 (1992a), pp. 72-78

  117. K.C. Hsieh, K.L. Shih, J.R. Jokipii, S. Grzedzielski, Probing the heliosphere with energetic hydrogen atoms. Astrophys. J. 393, 756–763 (1992b). doi:10.1086/171543

  118. H.S. Hudson, W.H. Ip, D.A. Mendis, An Einstein search for X-ray emission from comet Bradfield (1979l). Planet. Space Sci. 29, 1373 (1991)

  119. Y. Hui, D.R. Schultz, V.A. Kharchenko, P.C. Stancil, T.E. Cravens, C.M. Lisse, A. Dalgarno, The ion-induced charge-exchange X-ray emission of the Jovian Auroras: magnetospheric or solar wind origin? Astrophys. J. 702, 158–162 (2009). doi:10.1088/0004-637X/702/2/L158

  120. A.J. Hundhausen, H.E. Gilbert, S.J. Bame, The state of ionization of oxygen in the solar wind. Astrophys. J. 152, 3 (1968). doi:10.1086/180165

  121. S. Ibadov, On the efficiency of X-ray generation in impacts of cometary and zodiacal dust particles. Icarus 86, 283–288 (1990)

  122. S. Ibadov, Interplanetary dust interaction with comets: production of X-rays. Adv. Space Res. 17, 1293 (1996)

  123. W. Ip, On the charge exchange loss of energetic charged particles in the Jovian magnetosphere. J. Geophys. Res. 86, 11246–11250 (1981). doi:10.1029/JA086iA13p11246

  124. W.H. Ip, On charge exchange effect in the vicinity of the cometopause of comet Halley. Astrophys. J. 343, 946 (1989)

  125. W.H. Ip, V.W. Chow, NOTE. On Hypervelocity Impact phenomena of microdust and nano X-ray flares in cometary comae. Icarus 130, 217 (1997)

  126. R.C. Isler, An overview of charge-exchange spectroscopy as a plasma diagnostic. Plasma Phys. Control. Fusion 36, 171–208 (1994). doi:10.1088/0741-3335/36/2/001

  127. J.S. Kaastra, R. Lieu, T. Tamura, F.B.S. Paerels, J.W. den Herder, XMM-Newton confirmation of soft X-ray excess emission in clusters of galaxies—The discovery of O VII emission from an extended warm baryonic component. Astron. Astrophys. 397, 445–462 (2003). doi:10.1051/0004-6361:20021514

  128. T.R. Kallman, R. McCray, X-ray nebular models. Astrophys. J. Suppl. Ser. 50, 263 (1982)

  129. T.R. Kallman, P. Palmeri, Atomic data for X-ray astrophysics. Rev. Mod. Phys. 79, 79–133 (2007). doi:10.1103/RevModPhys.79.79

  130. E.P. Keath, G.B. Andrews, A.F. Cheng, S.M. Krimigis, B.H. Mauk, D.G. Mitchell, D.J. Williams, Instrumentation for energetic neutral atom imaging of magnetospheres, in Outstanding Problems in Solar System Plasma Physics: Theory and Instrumentation (1989), pp. 165–170

  131. J. Kerp, J. Pietz, P.M.W. Kalberla, W.B. Burton, R. Egger, M.J. Freyberg, D. Hartmann, U. Mebold, High-velocity clouds and their soft X-ray emission, in IAU Colloq. 166: The Local Bubble and Beyond, ed. by D. Breitschwerdt, M.J. Freyberg, J. Truemper. Lecture Notes in Physics, vol. 506 (Springer, Berlin, 1998), pp. 457–466

  132. V. Kharchenko, Charge-exchange mechanism of X-ray emission, in X-ray Diagnostics of Astrophysical Plasmas: Theory, Experiment, and Observation, vol. 774, ed. by R.K. Smith (2005), p. 271

  133. V. Kharchenko, A. Dalgarno, Spectra of cometary X rays induced by solar wind ions. J. Geophys. Res. 105, 18351–18360 (2000). doi:10.1029/1999JA000203

  134. V. Kharchenko, A. Dalgarno, Variability of cometary X-ray emission induced by solar wind ions. Astrophys. J. 554, 99 (2001)

  135. V. Kharchenko, M. Rigazio, A. Dalgarno, V.A. Krasnopolsky, Charge abundances of the solar wind ions inferred from cometary X-ray spectra. Astrophys. J. 585, 73–75 (2003). doi:10.1086/374209

  136. V. Kharchenko, A. Bhardwaj, A. Dalgarno, D.R. Schultz, P.C. Stancil, Modeling spectra of the north and south Jovian X-ray auroras. J. Geophys. Res. 113(A12), 8229 (2008). doi:10.1029/2008JA013062

  137. E. Kirsch, S.M. Krimigis, W. Ip, G. Gloeckler, X-ray and energetic neutral particle emission from Saturn’s magnetosphere. Nature 292, 718–721 (1981). doi:10.1038/292718a0

  138. D. Koutroumpa, F. Acero, R. Lallement, J. Ballet, V. Kharchenko, O VII and O VIII line emission in the diffuse soft X-ray background: heliospheric and galactic contributions. Astron. Astrophys. 475, 901–914 (2007). doi:10.1051/0004-6361:20078271

  139. D. Koutroumpa, R. Lallement, V. Kharchenko, A. Dalgarno, The solar wind charge-exchange contribution to the local soft X-ray background. Space Sci. Rev. 87 (2008). doi:10.1007/s11214-008-9381-9

  140. D. Koutroumpa, R. Lallement, J.C. Raymond, V. Kharchenko, The solar wind charge-transfer X-ray emission in the 1/4 keV energy range: inferences on local bubble hot gas at low Z. Astrophys. J. 696, 1517–1525 (2009). doi:10.1088/0004-637X/696/2/1517

  141. K. Koyama, X-ray observations of the Galactic Center with Suzaku. Prog. Theor. Phys. Suppl. 169, 103–108 (2007)

  142. S.S. Krasilnikov, A means of obtaining population inversion at the resonant transition of an ion. Pis ma Z. Tekhn. Fiz. 1, 574–578 (1975)

  143. V. Krasnopolsky, On the nature of soft X-ray radiation in Comets. Icarus 128, 368 (1997)

  144. V.A. Krasnopolsky, Production of cometary X rays by electron impact and Bremsstrahlung processes. J. Geophys. Res. 106, 18741–18750 (2001). doi:10.1029/2001JA000018

  145. V.A. Krasnopolsky, X rays and solar wind composition in four comets observed with Chandra X-Ray Observatory. J. Geophys. Res. 111(A10), 12102 (2006). doi:10.1029/2006JA012003

  146. V.A. Krasnopolsky, M.J. Mumma, Spectroscopy of comet Hyakutake at 80–700 A: first detection of solar wind charge transfer emissions. Astrophys. J. 549, 629 (2001)

  147. V.A. Krasnopolsky, M.J. Mumma, M. Abbott, B.C. Flynn, K.J. Meech, D.K. Yeomans, P.D. Feldman, C.B. Cosmovici, Detection of soft X-rays and a sensitive search for noble gases in comet Hale-Bopp (C/1995 O1). Science 277, 1488–1491 (1997)

  148. V.A. Krasnopolsky, M.J. Mumma, M.J. Abbott, EUVE search for X-rays from comets Encke, Mueller (C/1993 A1), Borrelly, and Postperihelion Hale-Bopp. Icarus 146, 152–160 (2000)

  149. V.A. Krasnopolsky, D.J. Christian, V. Kharchenko, A. Dalgarno, S.J. Wolk, C.M. Lisse, S.A. Stern, X-ray emission from comet McNaught-Hartley (C/1999 T1). Icarus 160, 437–447 (2002)

  150. V.A. Krasnopolsky, J.B. Greenwood, P.C. Stancil, X-ray and extreme ultraviolet emission from comets. Space Sci. Rev. 113, 271 (2004)

  151. S.M. Krimigis, D.G. Mitchell, E.C. Roelof, K.C. Hsieh, D.J. McComas, Imaging the interaction of the heliosphere with the interstellar medium from Saturn with Cassini. Science 326, 971 (2009). doi:10.1126/science.1181079

  152. R. Lallement, On the contribution of charge-exchange induced X-ray emission in the ISM and ICM. Astron. Astrophys. 422, 391–400 (2004a). doi:10.1051/0004-6361:20035625

  153. R. Lallement, The heliospheric soft X-ray emission pattern during the ROSAT survey: inferences on local bubble hot gas. Astron. Astrophys. 418, 143–150 (2004b)

  154. R. Lallement, Some observations related to the origin and evolution of the Local Bubble/Local ISM. Space Sci. Rev. 143, 427–436 (2009). doi:10.1007/s11214-008-9428-y

  155. L. Landau, On the theory of stars. Phys. Z. Sowjetunion 1, 285 (1932)

  156. L.J. Lanzerotti, C.G. Maclennan, T.P. Armstrong, S.M. Krimigis, R.P. Lepping, N.F. Ness, Ion and electron angular distributions in the Io torus region of the Jovian magnetosphere. J. Geophys. Res. 86, 8491–8496 (1981). doi:10.1029/JA086iA10p08491

  157. C. Lisse, M. Mumma, R. Petre, K. Dennerl, J. Schmitt, J. Englhauser, J. Trümper, Comet C/1996 B2 (Hyakutake). IAU Circ. 6373 (1996a)

  158. C.M. Lisse, K. Dennerl, J. Englhauser, M. Harden, F.E. Marshall, M.J. Mumma, R. Petre, J.P. Pye, M.J. Ricketts, J. Schmitt, J. Trümper, R.G. West, Discovery of X-ray and extreme ultraviolet emission from comet C/Hyakutake 1996 B2. Science 274, 205–209 (1996b)

  159. C. Lisse, M. Mumma, R. Petre, K. Dennerl, J. Englhauser, J. Schmitt, J. Truemper, Comet C/1996 B2 (Hyakutake). IAU Circ. 6433 (1996c)

  160. C.M. Lisse, D. Christian, K. Dennerl, J. Englhauser, J. Trümper, M. Desch, F.E. Marshall, R. Petre, S. Snowden, X-ray and extreme ultraviolet emission from comet P/Encke 1997. Icarus 141, 316–330 (1999)

  161. C.M. Lisse, D.J. Christian, K. Dennerl, K.J. Meech, R. Petre, H.A. Weaver, S.J. Wolk, Charge exchange-induced X-ray emission from comet C/1999 S4 (LINEAR). Science 292, 1343–1348 (2001)

  162. C.M. Lisse, T.E. Cravens, K. Dennerl, X-ray and extreme ultraviolet emission from comets. Comets II, 631–643 (2004)

  163. J. Liu, Q.D. Wang, Z. Li, J.R. Peterson, X-ray spectroscopy of the hot gas in the M31 bulge. Mon. Not. R. Astron. Soc. 404, 1879–1885 (2010). doi:10.1111/j.1365-2966.2010.16404.x

  164. W.H. Louisell, W.B. McKnight, M.O. Scully, Analysis of a soft-X-ray laser with charge-exchange excitation. Phys. Rev. A 11, 989–1000 (1975). doi:10.1103/PhysRevA.11.989

  165. S. Machida, A. Nishida, Thermal structure of the Jovian plasmasphere. Planet. Space Sci. 26, 745–752 (1978). doi:10.1016/0032-0633(78)90005-3

  166. H.S.W. Massey, E.H.S. Burhop, Electronic and Ionic Impact Phenomena, vol. VIII.6 (Oxford University Press, London, 1952)

  167. H.S.W. Massey, R.A. Smith, The passage of positive ions through gases. Proc. R. Soc. Lond. Ser. A, Math. Phys. Sci. 142, 142–172 (1933)

  168. A.N. Maurellis, T.E. Cravens, G.R. Gladstone, J.H. Waite, L.W. Acton, Jovian X-ray emission from solar X-ray scattering. Geophys. Res. Lett. 27(9), 1339–1342 (2000)

  169. R.J. Mawhorter, A. Chutjian, T.E. Cravens, N. Djurić, S. Hossain, C.M. Lisse, J.A. Macaskill, S.J. Smith, J. Simcic, I.D. Williams, Absolute single and multiple charge exchange cross sections for highly charged C, O, and Ne ions on H2O, CO, and CO2. Phys. Rev. A 75(3), 032704 (2007). doi:10.1103/PhysRevA.75.032704

  170. D. McCammon, R. Almy, E. Apodaca, W. Bergmann Tiest, W. Cui, S. Deiker, M. Galeazzi, M. Juda, A. Lesser, T. Mihara, J.P. Morgenthaler, W.T. Sanders, J. Zhang, E. Figueroa-Feliciano, R.L. Kelley, S.H. Moseley, R.F. Mushotzky, F.S. Porter, C.K. Stahle, A.E. Szymkowiak, A high spectral resolution observation of the soft X-ray diffuse background with thermal detectors. Astrophys. J. 576, 188–203 (2002)

  171. D.J. McComas, H.A. Elliott, N.A. Schwadron, J.T. Gosling, R.M. Skoug, B.E. Goldstein, The three-dimensional solar wind around solar maximum. Geophys. Res. Lett. 30(10), 100000-1 (2003). doi:10.1029/2003GL017136

  172. D.J. McComas, F. Allegrini, P. Bochsler, M. Bzowski, E.R. Christian, G.B. Crew, R. DeMajistre, H. Fahr, H. Fichtner, P.C. Frisch, H.O. Funsten, S.A. Fuselier, G. Gloeckler, M. Gruntman, J. Heerikhuisen, V. Izmodenov, P. Janzen, P. Knappenberger, S. Krimigis, H. Kucharek, M. Lee, G. Livadiotis, S. Livi, R.J. MacDowall, D. Mitchell, E. Möbius, T. Moore, N.V. Pogorelov, D. Reisenfeld, E. Roelof, L. Saul, N.A. Schwadron, P.W. Valek, R. Vanderspek, P. Wurz, G.P. Zank, Global observations of the interstellar interaction from the Interstellar Boundary Explorer (IBEX). Science 326, 959 (2009). doi:10.1126/science.1180906

  173. A.E. Metzger, D.A. Gilman, J.L. Luthey, K.C. Hurley, H.W. Schnopper, F.D. Seward, J.D. Sullivan, The detection of X-rays from Jupiter. J. Geophys. Res. 88, 7731 (1983)

  174. G. Metzner, Data acquisition and -evaluation electronics for the Rosat PSPCs. Nucl. Instrum. Methods Phys. Res., Sect. A, Accel. Spectrom. Detect. Assoc. Equip. 242, 493–500 (1986). doi:10.1016/0168-9002(86)90453-5

  175. E.D. Miller, T. Hiroshi, M.W. Bautz, D. McCammon, R. Fujimoto, J.P. Hughes, S. Katsuda, M. Kokubun, K. Mitsuda, F.S. Porter, Y. Takei, Y. Tsuboi, N.Y. Yamasaki, Suzaku observations of the North Polar Spur: evidence for nitrogen enhancement. Publ. Astron. Soc. Jpn. 60, 95 (2008)

  176. K. Mitsuda, R.L. Kelley, K.R. Boyce, G.V. Brown, E. Costantini, M.J. Dipirro, Y. Ezoe, R. Fujimoto, K.C. Gendreau, J. den Herder, A. Hoshino, Y. Ishisaki, C.A. Kilbourne, S. Kitamoto, D. McCammon, M. Murakami, H. Murakami, M. Ogawa, T. Ohashi, A. Okamoto, S. Paltani, M. Pohl, F.S. Porter, Y. Sato, K. Shinozaki, P.J. Shirron, G.A. Sneiderman, H. Sugita, A. Szymkowiak, Y. Takei, T. Tamagawa, M. Tashiro, Y. Terada, M. Tsujimoto, C. de Vries, H. Yamaguchi, N.Y. Yamasaki, The high-resolution X-ray microcalorimeter spectrometer system for the SXS on ASTRO-H, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, vol. 7732 (2010). doi:10.1117/12.856778

  177. E. Möbius, P. Bochsler, M. Bzowski, G.B. Crew, H.O. Funsten, S.A. Fuselier, A. Ghielmetti, D. Heirtzler, V.V. Izmodenov, M. Kubiak, H. Kucharek, M.A. Lee, T. Leonard, D.J. McComas, L. Petersen, L. Saul, J.A. Scheer, N. Schwadron, M. Witte, P. Wurz, Direct observations of interstellar H, He, and O by the Interstellar Boundary Explorer. Science 326, 969 (2009). doi:10.1126/science.1180971

  178. R.S. Mulliken, Intensities of electronic transitions in molecular spectra II. Charge-transfer spectra. J. Chem. Phys. 7, 20–34 (1939). doi:10.1063/1.1750319

  179. M.J. Mumma, V.A. Krasnopolsky, M.J. Abbott, Soft X-rays from four comets observed with EUVE. Astrophys. J. 491, 125 (1997)

  180. J.U. Ness, J.H.M.M. Schmitt, J. Robrade, Detection of Saturnian X-ray emission with XMM-Newton. Astron. Astrophys. 414, 49–52 (2004a)

  181. J.U. Ness, J.H.M.M. Schmitt, S.J. Wolk, K. Dennerl, V. Burwitz, X-ray emission from Saturn. Astron. Astrophys. 418, 337–345 (2004b)

  182. J. Nevalainen, M. Bonamente, J. Kaastra, Revisiting the soft X-ray excess emission in clusters of galaxies observed with XMM-Newton. Astrophys. J. 656, 733–738 (2007). doi:10.1086/510325

  183. T.G. Northrop, NOTE. The spectrum of X-rays from comet Hyakutake. Icarus 128, 480 (1997)

  184. T.G. Northrop, C.M. Lisse, M.J. Mumma, M.D. Desch, NOTE. A possible source of the X-rays from comet Hyakutake. Icarus 127, 246 (1997)

  185. S. Orsini, I.A. Daglis, M. Candidi, K.C. Hsieh, S. Livi, B. Wilken, Model calculation of energetic neutral atoms precipitation at low altitudes. J. Geophys. Res. 99, 13489 (1994). doi:10.1029/93JA03270

  186. S. Otranto, R.E. Olson, Charge exchange and X-ray emission cross sections for multiply charged ions colliding with H2O. Phys. Rev. A 77(2), 022709 (2008). doi:10.1103/PhysRevA.77.022709

  187. S. Otranto, R.E. Olson, P. Beiersdorfer, X-ray emission cross sections following charge exchange by multiply charged ions of astrophysical interest. Phys. Rev. A 73(2), 022723 (2006). doi:10.1103/PhysRevA.73.022723

  188. S. Otranto, R.E. Olson, P. Beiersdorfer, Cometary X-ray emission: theoretical cross sections following charge exchange by multiply charged ions of astrophysical interest. Can. J. Phys. 86, 171–174 (2008). doi:10.1139/P07-127

  189. A. Owens, A.N. Parmar, T. Oosterbroek, A. Orr, L.A. Antonelli, F. Fiore, R. Schulz, G.P. Tozzi, M.C. Maccarone, L. Piro, Evidence for dust-related X-ray emission from comet C/1995 O1 (Hale-Bopp). Astrophys. J. 493, 47 (1998)

  190. A. Owens, T. Oosterbroek, A. Orr, A.N. Parmar, R. Schulz, L.A. Antonelli, F. Fiore, G.P. Tozzi, M.C. Maccarone, L. Piro, BeppoSAX LECS detection of comet C/1995 O1 (Hale-Bopp). Nucl. Phys. B, Proc. Suppl. 69, 735–738 (1999a). doi:10.1016/S0920-5632(98)00277-1

  191. A. Owens, T. Oosterbroek, A. Orr, A.N. Parmar, R. Schulz, Detection of soft X-ray emission from comet C/1995 O1 (Hale-Bopp). Earth Moon Planets 77, 293–298 (1999b)

  192. R. Pepino, V. Kharchenko, A. Dalgarno, R. Lallement, Spectra of the X-ray emission induced in the interaction between the solar wind and the heliospheric gas. Astrophys. J. 617, 1347 (2004)

  193. D. Pequignot, Charge transfer reactions in some astrophysical situations. Astron. Astrophys. 81, 356–358 (1980a)

  194. D. Pequignot, Charge transfer reactions. II—A photoionization model of the planetary nebula NGC 7662. Astron. Astrophys. 83, 52–57 (1980b)

  195. D. Pequignot, M. Dennefeld, The Crab nebula. Astron. Astrophys. 120, 249–262 (1983)

  196. D. Pequignot, G. Stasińska, S.M.V. Aldrovandi, Charge transfer reactions—A consistent model of the planetary nebula NGC 7027. Astron. Astrophys. 63, 313–324 (1978)

  197. E. Pfeffermann, U. Briel, Development and performance of a position sensitive proportional counter for the ROSAT project. Adv. Space Res. 2(4), 255 (1983)

  198. P.P. Plucinsky, S.L. Snowden, U.G. Briel, G. Hasinger, E. Pfeffermann, An updated calibration of the ROSAT PSPC particle background for the analysis of diffuse and extended sources. Astrophys. J. 418, 519 (1993). doi:10.1086/173414

  199. A.M.T. Pollock, A new paradigm for the X-ray emission of O stars from XMM-Newton observations of the O9.7 supergiant ζ Orionis. Astron. Astrophys. 463, 1111–1123 (2007). doi:10.1051/0004-6361:20053838

  200. A.K. Pradhan, Recombination-cascade X-ray spectra of highly charged helium-like ions. Astrophys. J. 288, 824 (1985)

  201. L.P. Presniakov, A.P. Shevelko, Intense X-ray emission in the interaction of a laser plasma with a solid surface. ZhETF Pisma Redaktsiiu 36, 38–40 (1982)

  202. P. Ranalli, A. Comastri, L. Origlia, R. Maiolino, A deep X-ray observation of M82 with XMM-Newton. Mon. Not. R. Astron. Soc. 386, 1464–1480 (2008). doi:10.1111/j.1365-2966.2008.13128.x

  203. M. Revnivtsev, S. Sazonov, M. Gilfanov, E. Churazov, R. Sunyaev, Origin of the galactic ridge X-ray emission. Astron. Astrophys. 452, 169–178 (2006). doi:10.1051/0004-6361:20054268

  204. M. Revnivtsev, S. Sazonov, E. Churazov, W. Forman, A. Vikhlinin, R. Sunyaev, Discrete sources as the origin of the galactic X-ray ridge emission. Nature 458, 1142–1144 (2009). doi:10.1038/nature07946

  205. J.E. Rice, E.S. Marmar, J.L. Terry, E. Kaline, J. Kaline, Observation of charge-transfer population of high-n levels in Ar16+ from neutral hydrogen in the ground and excited states in a tokamak plasma. Phys. Rev. Lett. 56, 50–53 (1986). doi:10.1103/PhysRevLett.56.50

  206. M. Rigazio, V. Kharchenko, A. Dalgarno, X-ray emission spectra induced by hydrogenic ions in charge transfer collisions. Phys. Rev. A 66, 064701-1 (2002)

  207. I.P. Robertson, T.E. Cravens, Spatial maps of heliospheric and geocoronal X-ray intensities due to the charge exchange of the solar wind with neutrals. J. Geophys. Res. 108, 6-1 (2003). doi:10.1029/2003JA009873

  208. I.P. Robertson, T.E. Cravens, S. Snowden, T. Linde, Temporal and spatial variations of heliospheric X-ray emissions associated with charge transfer of the solar wind with interstellar neutrals. Space Sci. Rev. 97, 401 (2001)

  209. I.P. Robertson, K.D. Kuntz, M.R. Collier, T.E. Cravens, S.L. Snowden, The heliospheric contribution to the soft X-ray background emission, in American Institute of Physics Conference Series, ed. by R.K. Smith, S.L. Snowden, K.D. Kuntz, vol. 1156 (2009), pp. 52–61. doi:10.1063/1.3211834

  210. E.C. Roelof, Energetic neutral atom image of a storm-time ring current. Geophys. Res. Lett. 14, 652–655 (1987). doi:10.1029/GL014i006p00652

  211. E.C. Roelof, Imaging heliospheric shocks using energetic neutral atoms, in Solar Wind Seven Colloquium, ed. by E. Marsch, R. Schwenn (1992), pp. 385–390

  212. E.C. Roelof, D.G. Mitchell, D.J. Williams, Energetic neutral atoms (E∼50 keV) from the ring current—IMP 7/8 and ISEE 1. J. Geophys. Res. 90, 10991 (1985). doi:10.1029/JA090iA11p10991

  213. E. Rüchardt, Handbuch der Physik, vol. 22.2 (1933)

  214. D.W. Rule, K. Omidvar, Charge equilibrium and radiation of low-energy cosmic rays passing through interstellar medium. Astrophys. J. 229, 1198–1210 (1979). doi:10.1086/157054

  215. E. Rutherford, LXXIX. The scattering of α and β particles by matter and the structure of the atom. Philos. Mag., Ser. 6 21.125, 669–688 (1911). doi:10.1080/14786440508637080

  216. H. Ryufuku, K. Sasaki, T. Watanabe, Oscillatory behavior of charge transfer cross sections as a function of the charge of projectiles in low-energy collisions. Phys. Rev. A 21, 745–750 (1980). doi:10.1103/PhysRevA.21.745

  217. J.H.M.M. Schmitt, S.L. Snowden, B. Aschenbach, G. Hasinger, E. Pfeffermann, P. Predehl, J. Trümper, A soft X-ray image of the Moon. Nature 349, 583 (1991)

  218. R. Schulz, J.A. Stüwe, G.P. Tozzi, A. Owens, Optical analysis of an activity outburst in comet C/1995 O1 (Hale-Bopp) and its connection to an X-ray outburst. Astron. Astrophys. 361, 359 (2000)

  219. N.A. Schwadron, T.E. Cravens, Implications of solar wind composition for cometary X-rays. Astrophys. J. 544, 558 (2000)

  220. N.A. Schwadron, M. Bzowski, G.B. Crew, M. Gruntman, H. Fahr, H. Fichtner, P.C. Frisch, H.O. Funsten, S. Fuselier, J. Heerikhuisen, V. Izmodenov, H. Kucharek, M. Lee, G. Livadiotis, D.J. McComas, E. Moebius, T. Moore, J. Mukherjee, N.V. Pogorelov, C. Prested, D. Reisenfeld, E. Roelof, G.P. Zank, Comparison of Interstellar Boundary Explorer observations with 3D global heliospheric models. Science 326, 966 (2009). doi:10.1126/science.1180986

  221. M. Scully, W. Louisell, W. McKnight, A soft X-ray laser utilizing charge exchange. IEEE J. Quantum Electron. 10, 727–728 (1974). doi:10.1109/JQE.1974.1068348

  222. B. Seredyuk, R.W. McCullough, H.B. Gilbody, One-electron capture mechanisms in collisions of He-like O and C ions with molecules of astrophysical interest. Phys. Rev. A 72(2), 022710 (2005). doi:10.1103/PhysRevA.72.022710

  223. P.J. Serlemitsos, E.A. Boldt, S.S. Holt, R. Ramaty, A.F. Brisken, X-ray spectrum of Cassiopeia A: evidence for iron line emission. Astrophys. J. 184, 1 (1973). doi:10.1086/181275

  224. V.D. Shapiro, R. Bingham, J.M. Dawson, Z. Dobe, B.J. Kellett, D.A. Mendis, Energetic electrons produced by lower hybrid waves in the cometary environment and soft X-ray emission: Bremsstrahlung and k shell radiation. J. Geophys. Res. 104, 2537–2554 (1999)

  225. E.G. Shelley, S.A. Fuselier, H. Balsiger, J.F. Drake, J. Geiss, B.E. Goldstein, R. Goldstein, W.H. Ip, A.J. Lazarus, M. Neugebauer, Charge exchange of solar wind ions in the coma of comet P/Halley. Astron. Astrophys. 187, 304 (1987)

  226. R.L. Shelton, The local bubble debate. Space Sci. Rev. 69 (2008). doi:10.1007/s11214-008-9359-7

  227. R.L. Shelton, Revising the local bubble model due to solar wind charge exchange X-ray emission. Space Sci. Rev. 143, 231–239 (2009). doi:10.1007/s11214-008-9358-8

  228. G.A. Shields, A. Dalgarno, A. Sternberg, Line emission from charge transfer with atomic hydrogen at thermal energies. Phys. Rev. A 28, 2137–2140 (1983). doi:10.1103/PhysRevA.28.2137

  229. R.K. Smith, N.S. Brickhouse, D.A. Liedahl, J.C. Raymond, Collisional plasma models with APEC/APED: emission-line diagnostics of hydrogen-like and helium-like ions. Astrophys. J. 556, 91 (2001)

  230. R.K. Smith, R.J. Edgar, P.P. Plucinsky, B.J. Wargelin, P.E. Freeman, B.A. Biller, Chandra observations of MBM 12 and models of the local bubble. Astrophys. J. 623, 225–234 (2005). doi:10.1086/428568

  231. R.K. Smith, M.W. Bautz, R.J. Edgar, R. Fujimoto, K. Hamaguchi, J.P. Hughes, M. Ishida, R. Kelley, C.A. Kilbourne, K.D. Kuntz, D. McCammon, E. Miller, K. Mitsuda, K. Mukai, P.P. Plucinsky, F.S. Porter, S.L. Snowden, Y. Takei, Y. Terada, Y. Tsuboi, N.Y. Yamasaki, Suzaku observations of the local and distant hot ISM. Publ. Astron. Soc. Jpn. 59, 141–150 (2007)

  232. S.L. Snowden, D. McCammon, D.N. Burrows, J.A. Mendenhall, Analysis procedures for ROSAT XRT/PSPC observations of extended objects and the diffuse background. Astrophys. J. 424, 714–728 (1994). doi:10.1086/173925

  233. S.L. Snowden, M.R. Collier, K.D. Kuntz, XMM-Newton observation of solar wind charge exchange emission. Astrophys. J. 610, 1182 (2004)

  234. S.L. Snowden, R.F. Mushotzky, K.D. Kuntz, D.S. Davis, A catalog of galaxy clusters observed by XMM-Newton. Astron. Astrophys. 478, 615–658 (2008). doi:10.1051/0004-6361:20077930

  235. A.A. Suchkov, Y.A. Shchekinov, The ion composition of interstellar gas at 104–105 K. Astron. Z. 60, 883 (1983)

  236. Y. Tanaka, ASCA observation of X-ray emission from the Galactic ridge. Astron. Astrophys. 382, 1052–1060 (2002). doi:10.1051/0004-6361:20011678

  237. Y. Tanaka, T. Miyaji, G. Hasinger, Origin of the galactic ridge X-ray emission. Astron. Nachr. 320, 181 (1999)

  238. C.B. Tarter, J.C. Weisheit, A. Dalgarno, Double-charge transfer processes in gaseous nebulae. Astron. Astrophys. 71, 366–368 (1979)

  239. M. Torney, R. Bingham, J.M. Dawson, B.J. Kellett, V.D. Shapiro, H. Summers, Modelling X-ray line and continuum emission from comets. Phys. Scr. T 98, 168–171 (2001). doi:10.1238/Physica.Topical.098a00168

  240. J. Trümper, The ROSAT mission. Adv. Space Res. 2, 241–249 (1982). doi:10.1016/0273-1177(82)90070-9

  241. T.G. Tsuru, M. Ozawa, Y. Hyodo, H. Matsumoto, K. Koyama, H. Awaki, R. Fujimoto, R. Griffiths, C. Kilbourne, K. Matsushita, K. Mitsuda, A. Ptak, P. Ranalli, N.Y. Yamasaki, X-ray spectral study of the extended emission, ‘the cap’, located 11.6 kpc above the disk of M82. Publ. Astron. Soc. Jpn. 59, 269–282 (2007)

  242. W.H. Tucker, R.J. Gould, Radiation from a low-density plasma at 106 deg –108deg  K. Astrophys. J. 144, 244 (1966). doi:10.1086/148601

  243. M. Uchida, M. Morikawa, H. Kubotani, H. Mouri, X-ray spectra of comets. Astrophys. J. 498, 863 (1998)

  244. A. Vikhlinin, M. Markevitch, W. Forman, C. Jones, Zooming in on the coma cluster with Chandra: compressed warm gas in the brightest cluster galaxies. Astrophys. J. 555, 87–90 (2001). doi:10.1086/323181

  245. W. Voges, B. Aschenbach, T. Boller, H. Brauninger, U. Briel, W. Burkert, K. Dennerl, J. Englhauser, R. Gruber, F. Haberl, G. Hartner, G. Hasinger, E. Pfeffermann, W. Pietsch, P. Predehl, J. Schmitt, J. Trumper, U. Zimmermann, Rosat all-sky survey faint source catalogue. IAU Circ. 7432 (2000)

  246. J.H. Waite Jr., F. Bagenal, F. Seward, C. Na, G.R. Gladstone, T.E. Cravens, K.C. Hurley, J.T. Clarke, R. Elsner, S.A. Stern, ROSAT observations of the Jupiter aurora. J. Geophys. Res. 99, 14799 (1994). doi:10.1029/94JA01005

  247. J.H. Waite, G.R. Gladstone, W.S. Lewis, P. Drossart, T.E. Cravens, A.N. Maurellis, B.H. Mauk, S. Miller, Equatorial X-ray emissions: implications for Jupiter’s high exospheric temperatures. Science 276, 104–108 (1997). doi:10.1126/science.276.5309.104

  248. J.H. Waite, G.R. Gladstone, W.S. Lewis, R. Goldstein, D.J. McComas, P. Riley, R.J. Walker, P. Robertson, S. Desai, J.T. Clarke, D.T. Young, An auroral flare at Jupiter. Nature 410, 787–789 (2001)

  249. M.K. Wallis, Weakly-shocked flows of the solar wind plasma through atmospheres of comets and planets. Planet. Space Sci. 21, 1647–1660 (1973). doi:10.1016/0032-0633(73)90156-6

  250. B.J. Wargelin, J.J. Drake, Observability of stellar winds from late-type dwarfs via charge exchange X-ray emission. Astrophys. J. 546, 57 (2001)

  251. B.J. Wargelin, J.J. Drake, Stringent X-ray constraints on mass loss from Proxima Centauri. Astrophys. J. 578, 503–514 (2002). doi:10.1086/342270

  252. B.J. Wargelin, M. Markevitch, M. Juda, V. Kharchenko, R. Edgar, A. Dalgarno, Chandra observations of the “dark” Moon and geocoronal solar wind charge transfer. Astrophys. J. 607, 596 (2004)

  253. B.J. Wargelin, P. Beiersdorfer, P.A. Neill, R.E. Olson, J.H. Scofield, Charge-exchange spectra of hydrogenic and He-like iron. Astrophys. J. 634, 687–697 (2005). doi:10.1086/496874

  254. B.J. Wargelin, P. Beiersdorfer, G.V. Brown, EBIT charge-exchange measurements and astrophysical applications. Can. J. Phys. 86, 151–169 (2008). doi:10.1139/P07-125

  255. W.D. Watson, Production of galactic X-rays following charge exchange by cosmic-ray nuclei. Astrophys. J. 206, 842–846 (1976). doi:10.1086/154447

  256. R. Wegmann, K. Dennerl, X-ray tomography of a cometary bow shock. Astron. Astrophys. 430, 33–36 (2005)

  257. R. Wegmann, H.U. Schmidt, C.M. Lisse, K. Dennerl, J. Englhauser, X-rays from comets generated by energetic solar wind particles. Planet. Space Sci. 46.5, 603 (1998)

  258. R. Wegmann, K. Dennerl, C.M. Lisse, The morphology of cometary X-ray emission. Astron. Astrophys. 428, 647–661 (2004)

  259. N.C. Wickramasinghe, F. Hoyle, Very small dust particles (VDSP’s) in comet C/1996 B2 (Hyakutake). Astrophys. J. Suppl. Ser. 239, 121 (1996)

  260. R.E. Williams, The ionization structure of planetary nebulae—X. The contribution of charge exchange and optically thick condensations to [O I] radiation. Mon. Not. R. Astron. Soc. 164, 111–119 (1973)

  261. R. Willingale, A.D.P. Hands, R.S. Warwick, S.L. Snowden, D.N. Burrows, The X-ray spectrum of the North Polar Spur. Mon. Not. R. Astron. Soc. 343, 995–1001 (2003). doi:10.1046/j.1365-8711.2003.06741.x

  262. M.W. Wise, C.L. Sarazin, Charge transfer and X-ray emission from supernova remnants. Astrophys. J. 345, 384–392 (1989). doi:10.1086/167913

  263. T. Yoshino, K. Mitsuda, N.Y. Yamasaki, Y. Takei, T. Hagihara, K. Masui, M. Bauer, D. McCammon, R. Fujimoto, Q.D. Wang, Y. Yao, Energy spectra of the soft X-ray diffuse emission in fourteen fields observed with Suzaku. Publ. Astron. Soc. Jpn. 61, 805 (2009)

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Dennerl, K. Charge Transfer Reactions. Space Sci Rev 157, 57–91 (2010). https://doi.org/10.1007/s11214-010-9720-5

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Keywords

  • Charge transfer
  • Charge exchange
  • Atomic physics
  • X-rays
  • Ions
  • Energetic neutral atoms
  • Nuclear fusion
  • X-ray astronomy
  • History
  • Solar wind
  • Comets
  • Moon
  • Planets
  • Venus
  • Earth
  • Mars
  • Jupiter
  • Saturn
  • Heliosphere
  • X-ray background
  • Local bubble
  • Interstellar medium
  • North polar spur
  • Supernova remnants
  • Stars
  • Galaxies
  • Clusters of galaxies
  • Dark matter
  • Rosat
  • EUVE
  • BeppoSAX
  • Chandra
  • XMM-Newton
  • Suzaku
  • ASTRO-H
  • IXO