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Solar Sources of Heliospheric Energetic Electron Events—Shocks or Flares?

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Abstract

Electrons with near-relativistic (E≳30 keV, NrR) and relativistic (E≳0.3 MeV) energies are often observed as discrete events in the inner heliosphere following solar transient activity. Several acceleration mechanisms have been proposed for the production of those electrons. One candidate is acceleration at MHD shocks driven by coronal mass ejections (CMEs) with speeds ≳1000 km s−1. Many NrR electron events are temporally associated only with flares while others are associated with flares as well as with CMEs or with radio type II shock waves. Since CME onsets and associated flares are roughly simultaneous, distinguishing the sources of electron events is a serious challenge. On a phenomenological basis two classes of solar electron events were known several decades ago, but recent observations have presented a more complex picture. We review early and recent observational results to deduce different electron event classes and their viable acceleration mechanisms, defined broadly as shocks versus flares. The NrR and relativistic electrons are treated separately. Topics covered are: solar electron injection delays from flare impulsive phases; comparisons of electron intensities and spectra with flares, CMEs and accompanying solar energetic proton (SEP) events; multiple spacecraft observations; two-phase electron events; coronal flares; shock-associated (SA) events; electron spectral invariance; and solar electron intensity size distributions. This evidence suggests that CME-driven shocks are statistically the dominant acceleration mechanism of relativistic events, but most NrR electron events result from flares. Determining the solar origin of a given NrR or relativistic electron event remains a difficult proposition, and suggestions for future work are given.

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References

  • M.D. Andrews, Sol. Phys. 218, 261 (2003)

    ADS  Google Scholar 

  • H. Aurass, K. Shibasaki, M. Reiner, M. Karlický, Astrophys. J. 567, 610 (2002)

    ADS  Google Scholar 

  • H. Aurass, G. Mann, Astrophys. J. 615, 526 (2004)

    ADS  Google Scholar 

  • H. Aurass, G. Mann, G. Rausche, A. Warmuth, Astron. Astrophys. 457, 681 (2006)

    ADS  Google Scholar 

  • T.S. Bastian, A.O. Benz, D.E. Gary, Ann. Rev. Astron. Astrophys. 36, 131 (1998)

    ADS  Google Scholar 

  • A. Belov, H. Garcia, V. Kurt, H. Mavromichalaki, M. Gerontidou, Sol. Phys. 229, 135 (2005)

    ADS  Google Scholar 

  • J.W. Bieber, J.A. Earl, G. Green, H. Kunow, R. Müller-Mellin, G. Wibberenz, J. Geophys. Res. 85(A5), 2313 (1980)

    ADS  Google Scholar 

  • J.W. Bieber, J. Clem, P. Evenson, R. Pyle, D. Ruffolo, A. Sáiz, Geophys. Res. Lett. 32, L03S02 (2005). doi:10.1029/2004GL021492

    Google Scholar 

  • K.R. Bromund, J.M. McTiernan, S.R. Kane, Astrophys. J. 455, 733 (1995)

    ADS  Google Scholar 

  • D. Burgess, in The Physics of Collisionless Shocks, ed. by G. Li, G.P. Zank, C.T. Russell, vol. 781 (AIP, CP, 2005), p. 17

  • H.V. Cane, Astrophys. J. 598, 1403 (2003)

    ADS  Google Scholar 

  • H.V. Cane, R.G. Stone, Astrophys. J. 282, 339 (1984)

    ADS  Google Scholar 

  • H.V. Cane, D.V. Reames, Astrophys. J. Suppl. 73, 253 (1990)

    ADS  Google Scholar 

  • H.V. Cane, R.G. Stone, J. Fainberg, J.L. Steinberg, S. Hoang, R.T. Stewart, Geophys. Res. Lett. 8, 1285 (1981)

    ADS  Google Scholar 

  • H.V. Cane, W.C. Erickson, N.P. Prestage, J. Geophys. Res. 107(A10), 1315 (2002). doi:10.1029/2001JA000320

    Google Scholar 

  • K.-S. Cho, Y.-J. Moon, M. Dryer, A. Shanmugaraju, C.D. Fry, Y.-H. Kim, S.-C. Bong, Y.-D. Park, J. Geophys. Res. 110, A12101 (2005). doi:10.1029/2004JA010744

    ADS  Google Scholar 

  • S. Christe, S. Krucker, L. Wang, R.P. Lin, AGU Fall Meeting, abstract #SH31A-04, 2005

  • H.T. Classen, H. Aurass, Astron. Astrophys. 384, 1098 (2002)

    ADS  Google Scholar 

  • E. Cliver, S. Kahler, Astrophys. J. 366, L91 (1991)

    ADS  Google Scholar 

  • E.W. Cliver, A.G. Ling, Astrophys. J. 658 (2007, accepted)

  • E. Cliver, D. Reames, S. Kahler, H. Cane, in Proc. 22nd Int. Cosmic Ray Conf., Dublin, vol. 3, 1991, p. 25

  • E.W. Cliver, N.B. Crosby, B.R. Dennis, Astrophys. J. 426, 767 (1994)

    ADS  Google Scholar 

  • E.W. Cliver, D.F. Webb, R.A. Howard, Sol. Phys. 187, 89 (1999)

    ADS  Google Scholar 

  • E.W. Cliver, S.W. Kahler, D.V. Reames, Astrophys. J. 605, 902 (2004)

    ADS  Google Scholar 

  • E.W. Cliver, S.W. Kahler, D.F. Neidig, H.V. Cane, I.G. Richardson, M.-B. Kallenrode, G. Wibberenz, in Proc. 24th Int. Cosmic Ray Conf., Rome, vol. 4, 1995, p. 257

  • E.W. Cliver, B.J. Thompson, G.R. Lawrence, A.N. Zhukov, A.J. Tylka, W.F. Dietrich, D.V. Reames, M.J. Reiner, R.J. MacDowall, A.G. Kosovichev, A.G. Ling, in Proc. 29th Int. Cosmic Ray Conf., Pune, vol. 1, 2005a, p. 121

  • E.W. Cliver, N.V. Nitta, B.J. Thompson, J. Zhang, Sol. Phys. 225, 105 (2005b)

    ADS  Google Scholar 

  • N.B. Crosby, M.J. Aschwanden, B.R. Dennis, Sol. Phys. 143, 275 (1993)

    ADS  Google Scholar 

  • N. Crosby, N. Vilmer, N. Lund, R. Sunyaev, Astron. Astrophys. 334, 299 (1998)

    ADS  Google Scholar 

  • E.I. Daibog, V.G. Stolpovskii, S.W. Kahler, Cosm. Res. 41(2), 128 (2003)

    ADS  Google Scholar 

  • E.I. Daibog, V.G. Stolpovskii, S.I. Svertilov, S.W. Kahler, H. Kunow, G. Erdos, Adv. Space Res. 26(5), 871 (2000)

    ADS  Google Scholar 

  • S. Dalla, P.K. Browning, Astron. Astrophys. 436, 1103 (2005)

    ADS  Google Scholar 

  • S. Dalla, P.K. Browning, Astron. Astrophys. 640, L99 (2006)

    ADS  Google Scholar 

  • D. Datlowe, Sol. Phys. 17, 436 (1971)

    ADS  Google Scholar 

  • W.F. Dietrich, A.J. Tylka, Eos Trans. AGU, Jt. Assem. Suppl. 87(36), (2006)

  • H.W. Dodson, E.R. Hedeman, S.W. Kahler, R.P. Lin, Sol. Phys. 6, 294 (1969)

    ADS  Google Scholar 

  • B.L. Dougherty, H. Zirin, K. Hsu, Astrophys. J. 577, 457 (2002)

    ADS  Google Scholar 

  • J.F. Drake, M. Swisdak, H. Che, M.A. Shay, Nature 443, 553 (2006)

    ADS  Google Scholar 

  • W. Dröge, in High Energy Solar Physics, ed. by R. Ramaty, N. Mandzhavidze, X.-M. Hua, vol. 374 (AIP Conf. Proc., 1996), p. 78

  • W. Dröge, R. Müller-Mellin, E.W. Cliver, Astrophys. J. 387, L97 (1992)

    ADS  Google Scholar 

  • G.A. Dulk, Y. Leblanc, T.S. Bastian, J.-L. Bougeret, J. Geophys. Res. 105(A12), 27343 (2000)

    ADS  Google Scholar 

  • R.E. Ergun et al., Astrophys. J. 503, 435 (1998)

    ADS  Google Scholar 

  • D.J. Forrest, E.L. Chupp, Nature 305, 291 (1983)

    ADS  Google Scholar 

  • J. Giacalone, in The Physics of Collisionless Shocks, ed. by G. Li, G.P. Zank, C.T. Russell, vol. 781 (AIP, CP, 2005), p. 213

  • N. Gopalswamy, in The Sun and the Heliosphere as an Integrated System, ed. by G. Poletto, S.T. Suess (Kluwer, Dordrecht, 2004), p. 201

    Google Scholar 

  • N. Gopalswamy, A. Lara, M.L. Kaiser, J.-L. Bougeret, J. Geophys. Res. 106, 25261 (2001a)

    ADS  Google Scholar 

  • N. Gopalswamy, S. Yashiro, M.L. Kaiser, R.A. Howard, J.-L. Bougeret, J. Geophys. Res. 106, 29219 (2001b)

    ADS  Google Scholar 

  • N. Gopalswamy, S. Yashiro, S. Krucker, G. Stenborg, R.A. Howard, J. Geophys. Res. 109, A12105 (2004). doi:10.1029/2004JA010602

    ADS  Google Scholar 

  • N. Gopalswamy, H. Xie, S. Yashiro, I. Usoskin, in Proc. 29th Int. Cosmic Ray Conf., Pune, vol. 1, 2005, p. 169

  • J.T. Gosling, E. Hildner, R.M. MacQueen, R.H. Munro, A.I. Poland, C.L. Ross, J. Geophys. Res. 79, 4581 (1974)

    ADS  Google Scholar 

  • J.T. Gosling, R.M. Skoug, D.J. McComas, J. Geophys. Res. 30(13), 1697 (2003). doi:10.1029/2003GL017079

    Google Scholar 

  • J.T. Gosling, R.M. Skoug, D.K. Haggerty, D.J. McComas, Geophys. Res. Lett. 32, L14113 (2005). doi:10.1029/2005GL023357

    ADS  Google Scholar 

  • D.K. Haggerty, E.C. Roelof, Astrophys. J. 579, 841 (2002)

    ADS  Google Scholar 

  • D.K. Haggerty, E.C. Roelof, G.M. Simnett, Adv. Space Res. 32(12), 2673 (2003)

    ADS  Google Scholar 

  • B. Hamilton, L. Fletcher, K.G. McClements, A. Thyagaraja, Astrophys. J. 625, 496 (2005)

    ADS  Google Scholar 

  • S. Hucke, M.-B. Kallenrode, G. Wibberenz, Sol. Phys. 142, 143 (1992)

    ADS  Google Scholar 

  • H. Hudson, Sol. Phys. 57, 237 (1978)

    ADS  Google Scholar 

  • H. Hudson, J. Ryan, Ann. Rev. Astron. Astrophys. 33, 239 (1995)

    ADS  Google Scholar 

  • S.W. Kahler, J. Geophys. Res. 87, 3439 (1982)

    Article  ADS  Google Scholar 

  • S.W. Kahler, J. Geophys. Res. 106(A10), 20947 (2001a)

    ADS  Google Scholar 

  • S.W. Kahler, in Space Weather, ed. by P. Song, H.J. Singer, G.L. Siscoe, AGU Geophys. Mon., vol. 125, 2001b, p. 109

  • S. Kahler, B.R. Ragot, Astrophys. J. 646, 634 (2006)

    ADS  Google Scholar 

  • S.W. Kahler, E.W. Cliver, H.V. Cane, R.E. McGuire, R.G. Stone, N.R. Sheeley Jr., Astrophys. J. 302, 504 (1986)

    ADS  Google Scholar 

  • S.W. Kahler, E.W. Cliver, H.V. Cane, Sol. Phys. 120, 393 (1989)

    ADS  Google Scholar 

  • S.W. Kahler, E.I. Daibog, V.G. Kurt, V.G. Stolpovskii, Astrophys. J. 422, 394 (1994)

    ADS  Google Scholar 

  • S.W. Kahler, H.V. Cane, H.S. Hudson, V.G. Kurt, Y.V. Gotselyuk, R.J. MacDowall, V. Bothmer, J. Geophys. Res. 103(6), 12069 (1998)

    ADS  Google Scholar 

  • S.W. Kahler, H. Aurass, G. Mann, A. Klassen, in Coronal and Stellar Mass Ejections, ed. by K.P. Dere, J. Wang, Y. Yan IAU Symp., vol. 226, 2005, p. 338

  • S.W. Kahler, H. Aurass, G. Mann, A. Klassen, Astrophys. J. 656, 567 (2007)

    ADS  Google Scholar 

  • M.-B. Kallenrode, Z. Svestka, Sol. Phys. 155, 121 (1994)

    ADS  Google Scholar 

  • M.-B. Kallenrode, G. Wibberenz, Astrophys. J. 376, 787 (1991)

    ADS  Google Scholar 

  • M.-M. Kallenrode, E.W. Cliver, G. Wibberenz, Astrophys. J. 391, 370 (1992)

    ADS  Google Scholar 

  • S.R. Kane, P. Evenson, P. Meyer, Astrophys. J. 299, L07 (1985)

    Google Scholar 

  • A. Klassen, V. Bothmer, G. Mann, M.J. Reiner, S. Krucker, A. Vourlidas, H. Kunow, Astron. Astrophys. 385, 1078 (2002)

    ADS  Google Scholar 

  • A. Klassen, S. Krucker, H. Kunow, R. Muller-Mellin, R. Wimmer-Schweingruber, G. Mann, A. Posner, J. Geophys. Res. 110, A09S04 (2005). doi:10.1029/2004JA010910

    Google Scholar 

  • B. Klecker, E. Rieger, D. Hovestadt, D.J. Forrest, E.W. Cliver, W. Dröge, in Proc. 21st Internat. Cosmic Ray Conf., Adelaide, vol. 5, 1990, p. 80

  • K.-L. Klein, in Solar Wind Seven, ed. by E. Marsch, R. Schwenn (Pergamon, Oxford, 1992), p. 635

    Google Scholar 

  • K.-L. Klein, R.A. Schwartz, J.M. McTiernan, G. Trottet, A. Klassen, A. Lecacheux, Astron. Astrophys. 409, 317 (2003)

    ADS  Google Scholar 

  • K.-L. Klein, S. Krucker, G. Trottet, S. Hoang, Astron. Astrophys. 431, 1047 (2005)

    ADS  Google Scholar 

  • M.R. Kundu, R.J. MacDowall, R.G. Stone, Astrophys. Space Sci. 165, 101 (1990)

    ADS  Google Scholar 

  • H. Kunow, G Wibberenz, G. Green, R. Müller-Mellin, M.-B. Kallenrode, in Physics of the Inner Heliosphere II, ed. by R. Schwenn, E. Marsch (Springer, Berlin, 1991), p. 243

    Google Scholar 

  • A.W. Labrador, R.A. Leske, R.A. Mewaldt, E.C. Stone, T.T. von Rosenvinge, in Proc. 29th Int. Cosmic Ray Conf., Pune, vol. 1, 2005, p. 99

  • D. Lario, R.B. Decker, E.C. Roelof, D.B. Reisenfeld, T.R. Sanderson, J. Geophys. Res. 109 (2004). doi:10.1029/2003JA010071

  • Y. Leblanc, G.A. Dulk, A. Vourlidas, J.-L. Bougeret, J. Geophys. Res. 106(A11), 25301 (2001)

    ADS  Google Scholar 

  • M.A. Lee, Astrophys. J. Suppl. 158, 38 (2005)

    ADS  Google Scholar 

  • R.P. Lin, Sol. Phys. 12, 266 (1970)

    ADS  Google Scholar 

  • R.P. Lin, Sol. Phys. 100, 537 (1985)

    ADS  Google Scholar 

  • R.P. Lin, Adv. Space Res. 13(9), 265 (1993)

    ADS  Google Scholar 

  • R.P. Lin, R.A. Mewaldt, M.A.I. van Hollebeke, Astrophys. J. 253, 949 (1982)

    ADS  Google Scholar 

  • R.P. Lin et al., Geophys. Res. Lett. 23, 1211 (1996)

    ADS  Google Scholar 

  • Y.E. Litvinenko, Sol. Phys. 212, 379 (2003)

    ADS  Google Scholar 

  • Y.E. Litvinenko, Astron. Astrophys. 452, 1069 (2006)

    ADS  Google Scholar 

  • C. Lopate, J. Geophys. Res. 94(A8), 9995 (1989)

    ADS  Google Scholar 

  • R.J. MacDowall, R.G. Stone, M.R. Kundu, Sol. Phys. 111, 397 (1987)

    ADS  Google Scholar 

  • R.J. MacDowall, A. Lara, P.K. Manoharan, N.V. Nitta, A.M. Rosas, J.L. Bougeret, Geophys. Res. Lett. 30(12), 8018 (2003). doi:10.1029/2002GL016624

    ADS  Google Scholar 

  • C.G. Maclennan, L.J. Lanzerotti, R.E. Gold, Geophys. Res. Lett. 30 (2003). doi:10.1029/2003GL017080

  • D.J.F. Maia, M. Pick, Astrophys. J. 609, 1082 (2004)

    ADS  Google Scholar 

  • G. Mann, A. Klassen, in Solar Variability: From Core to Outer Frontiers, ed. by E. Wilson (ESA SP, 2002), p. 245

  • G. Mann, A. Klassen, Astron. Astrophys. 441, 319 (2005)

    ADS  Google Scholar 

  • G. Mann, H.-T. Classen, U. Motschmann, J. Geophys. Res. 106(11), 25323 (2001)

    ADS  Google Scholar 

  • G. Mann, A. Klassen, H. Aurass, H.-T. Classen, Astron. Astrophys. 400, 329 (2003)

    ADS  Google Scholar 

  • R.A. Mewaldt, M.D. Looper, C.M.S. Cohen, G.M. Mason, D.K. Haggerty, M.I. Desai, A.W. Labrador, R.A. Leske, J.E. Mazur, in Proc. 29th Int. Cosmic Ray Conf., Pune, vol. 1, 2005, p. 111

  • J.A. Miller, in High Energy Solar Physics: Anticipating HESSI, ed. by R. Ramaty, N. Mandzhavidze, ASP Conf. Ser., vol. 206, 2000, p. 145

  • J.A. Miller, T.N. LaRosa, R.L. Moore, Astrophys. J. 461, 445 (1996)

    ADS  Google Scholar 

  • J.A. Miller, P.J. Cargill, A.G. Emslie, G.D. Holman, B.R. Dennis, T.N. LaRosa, R.M. Winglee, S.G. Benka, S. Tsuneta, J. Geophys. Res. 102(A7), 14631 (1997)

    ADS  Google Scholar 

  • L.I. Miroshnichenko, B. Mendoza, E. Pérez, Sol. Phys. 202, 151 (2001)

    ADS  Google Scholar 

  • L.I. Miroshnichenko, K.-L. Klein, G. Trottet, P. Lantos, E.V. Vashenyuk, Y.V. Balabin, B.B. Gvozdevsky, J. Geophys. Res. 110, A09S08 (2005). doi:10.1029/2004JA010936

    Google Scholar 

  • Y.-J. Moon, G.S. Choe, H. Wang, Y.D. Park, N. Gopalswamy, G. Yang, S. Yashiro, Astrophys. J. 581, 694 (2002)

    ADS  Google Scholar 

  • D. Moses, W. Dröge, P. Meyer, P. Evenson, Astrophys. J. 346, 523 (1989)

    ADS  Google Scholar 

  • H.-H. Neustock, G. Wibberenz, B. Iwers, in Proc. 19th Int. Cosmic Ray Conf., La Jolla, vol. 4, 1985, p. 102

  • G.M. Nita, D.E. Gary, L.J. Lanzerotti, D.J. Thomson, Astrophys. J. 570, 423 (2002)

    ADS  Google Scholar 

  • L.-D. Pan, R.P. Lin, S.R. Kane, Sol. Phys. 91, 345 (1984)

    ADS  Google Scholar 

  • V. Petrosian, S. Liu, Astrophys. J. 610, 550 (2004)

    ADS  Google Scholar 

  • D.W. Potter, R.P. Lin, K.A. Anderson, Astrophys. J. 236, L97 (1980)

    ADS  Google Scholar 

  • B.R. Ragot, Astrophys. J. 653, 1493 (2006)

    ADS  Google Scholar 

  • D.V. Reames, Space Sci. Rev. 90, 413 (1999)

    ADS  Google Scholar 

  • D.V. Reames, C.K. Ng, Astrophys. J. 610, 510 (2004)

    ADS  Google Scholar 

  • D.V. Reames, R.P. Lin, in Proc. 19th Int. Cosmic Ray Conf., La Jolla, vol. 4, 1985, p. 273

  • D.V. Reames, T.T. von Rosenvinge, R.P. Lin, Astrophys. J. 292, 716 (1985)

    ADS  Google Scholar 

  • D.V. Reames, S.W. Kahler, C.K. Ng, Astrophys. J. 491, 414 (1997)

    ADS  Google Scholar 

  • M.J. Reiner, M. Karlický, K. Jir̆ic̆ka, H. Aurass, G. Mann, M.L. Kaiser, Astrophys. J. 530, 1049 (2000)

    ADS  Google Scholar 

  • W.K.M. Rice, G.P. Zank, G. Li, J. Geophys. Res. 108(A10), 1369 (2003). doi:10.1029/2002JA009756

    Google Scholar 

  • I.M. Robinson, G.M. Simnett, J. Geophys. Res. 107 (2002). doi:10.1029/2001JA000305

  • E.C. Roelof, G.M. Simnett, R.B. Decker, L.J. Lanzerotti, C.G. Maclennan, T.P. Armstrong, R.E. Gold, J. Geophys. Res. 102, 11251 (1997)

    ADS  Google Scholar 

  • A. Sáiz, P. Evenson, D. Ruffolo, J.W. Bieber, Astrophys. J. 626, 1131 (2005)

    ADS  Google Scholar 

  • T.R. Sanderson, in Coronal and Stellar Mass Ejections, ed. by K.P. Dere, Y. Yan, Proc. IAU Symp., vol. 226, 2005, p. 350

  • T.R. Sanderson, R.G. Marsden, C. Tranquille, S. Dalla, R.J. Forsyth, J.T. Gosling, R.B. McKibben, Geophys. Res. Lett. 30, 8036 (2003). doi:10.1029/2003GL017306

    ADS  Google Scholar 

  • A. Shanmugaraju, Y.-J. Moon, K.-S. Cho, M. Dryer, S. Umapathy, Sol. Phys. 233, 117 (2006)

    ADS  Google Scholar 

  • N.R. Sheeley Jr., R.A. Howard, M.J. Koomen, D.J. Michels, Astrophys. J. 272, 349 (1983)

    ADS  Google Scholar 

  • G. Schellert, G. Wibberenz, H. Kunow, in Proc. 19th Int. Cosmic-Ray Conf., La Jolla, vol. 4, 1985, p. 305

  • A.Y. Shih, D.M. Smith, R.P. Lin, G.H. Share, R.J. Murphy, R.A. Schwartz, A.K. Tolbert, AAS SPD meeting #37. AAS Bull. 38, 220 (2006)

    Google Scholar 

  • H. Sierks et al., in Proc. 25th Int. Cosmic Ray Conf., Durban, vol. 1, 1997, p. 297

  • G.M. Simnett, Adv. Space Res. 31(4), 883 (2003a)

    ADS  Google Scholar 

  • G.M. Simnett, Sol. Phys. 213, 387 (2003b)

    ADS  Google Scholar 

  • G.M. Simnett, J. Geophys. Res. 110, A09S01 (2005a). doi:10.1029/2004JA010789

    Google Scholar 

  • G.M. Simnett, Sol. Phys. 229, 213 (2005b)

    ADS  Google Scholar 

  • G.M. Simnett, Astron. Astrophys. 445, 715 (2006a)

    ADS  Google Scholar 

  • G.M. Simnett, Sol. Phys. 237, 383 (2006b)

    ADS  Google Scholar 

  • G.M. Simnett, E.C. Roelof, D.K. Haggerty, Astrophys. J. 579, 854 (2002)

    ADS  Google Scholar 

  • P.L. Slocum et al., Astrophys. J. 594, 592 (2003)

    ADS  Google Scholar 

  • J. Steinacker, W. Dröge, R. Schlickeiser, in Proc. 21st Int. Cosmic-Ray Conf., Adelaide, vol. 5, 1990, p. 32

  • V.G. Stolpovskii, G. Erdos, S.W. Kahler, E.I. Daibog, Yu.I. Logachev, in Proc. 24th Int. Cosmic-Ray Conf., Rome, vol. 4, 1995, p. 301

  • V.G. Stolpovskii, E.I. Daibog, S.I. Svertilov, S.W. Kahler, G. Erdos, in Proc. 25th Int. Cosmic-Ray Conf., Durban, vol. 1, 1997, p. 189

  • V.G. Stolpovskii, E.I. Daibog, S.W. Kahler, G. Erdos, Adv. Space Res. 21(4), 543 (1998)

    ADS  Google Scholar 

  • V. Stolpovskii, E. Daibog, G. Erdös, S. Kahler, K. Kecskeméty, H. Kunow, in Proc. 27th Int. Cosmic-Ray Conf., Hamburg, vol. 8, 2001, p. 3454

  • Y. Su, W.Q. Gan, Y.P. Li, Sol. Phys. 238, 61 (2006)

    ADS  Google Scholar 

  • R.A. Treumann, T. Terasawa, Space Sci. Rev. 99, 135 (2001)

    ADS  Google Scholar 

  • R. Turkmani, P.J. Cargill, K. Galsgaard, L. Vlahos, H. Isliker, Astron. Astrophys. 449, 749 (2006)

    ADS  Google Scholar 

  • A.J. Tylka, M.A. Lee, Astrophys. J. 646, 1319 (2006)

    ADS  Google Scholar 

  • A.J. Tylka, C.M.S. Cohen, W.F. Dietrich, M.A. Lee, C.G. Maclennan, R.A. Mewaldt, C.K. Ng, D.V. Reames, Astrophys. J. 625, 474 (2005)

    ADS  Google Scholar 

  • M.A. van Hollebeke, L.S. Ma Sung, F.B. McDonald, Sol. Phys. 41, 189 (1975)

    ADS  Google Scholar 

  • I.S. Veselovsky et al., Cosm. Res. 35, 119 (1997)

    ADS  Google Scholar 

  • B. Vrs̆nak, J. Geophys. Res. 106(A11), 25291 (2001)

    ADS  Google Scholar 

  • B. Vrs̆nak, D. Sudar, D. Ruz̆djak, Astron. Astrophys. 435, 1149 (2005)

    ADS  Google Scholar 

  • L. Wang, R.P. Lin, S. Krucker, G.M. Mason, in Proc. Solar Wind 11 - SOHO 16, vol. 592, ed. by B. Fleck, T.H. Zurbuchen (ESA SP, 2005), p. 457

  • L. Wang, R.P. Lin, S. Krucker, G.M. Mason, Bull. Am. Astron. Soc. 38, 256 (2006)

    ADS  Google Scholar 

  • M.S. Wheatland, Astrophys. J. 532, 1209 (2000)

    ADS  Google Scholar 

  • G. Wibberenz, H.V. Cane, Astrophys. J. 650, 1199 (2006)

    ADS  Google Scholar 

  • J.P. Wild, S.F. Smerd, A.A. Weiss, Ann. Rev. Astron. Astrophys. 1, 291 (1963)

    ADS  Google Scholar 

  • S. Yashiro, N. Gopalswamy, S. Akiyama, G. Michalek, R.A. Howard, J. Geophys. Res. 110, A12S05 (2005). doi:10.1029/2005JA011151

    Google Scholar 

  • S. Yashiro, S. Akiyama, N. Gopalswamy, R.A. Howard, Astrophys. J. 650, L143 (2006)

    ADS  Google Scholar 

  • V. Yurchyshyn, S. Yashiro, V. Abramenko, H. Wang, N. Gopalswamy, Astrophys. J. 619, 599 (2005)

    ADS  Google Scholar 

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  1. Air Force Research Laboratory, VSBXS, 29 Randolph Rd., Hanscom AFB, MA, 01731-3010, USA

    S. W. Kahler

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Kahler, S.W. Solar Sources of Heliospheric Energetic Electron Events—Shocks or Flares?. Space Sci Rev 129, 359–390 (2007). https://doi.org/10.1007/s11214-007-9143-0

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  • DOI: https://doi.org/10.1007/s11214-007-9143-0

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