Abstract
An excess over the extrapolation to the extreme ultraviolet and soft X-ray ranges of the thermal emission from the hot intracluster medium has been detected in a number of clusters of galaxies. We briefly present each of the satellites (EUVE, ROSAT PSPC and BeppoSAX, and presently XMM-Newton, Chandra and Suzaku) and their corresponding instrumental issues, which are responsible for the fact that this soft excess remains controversial in a number of cases. We then review the evidence for this soft X-ray excess and discuss the possible mechanisms (thermal and non-thermal) which could be responsible for this emission.
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References
J.S. Arabadjis, J.N. Bregman, Astrophys. J. 514, 607 (1999)
A.M. Atoyan, H.J. Völk, Astrophys. J. 535, 45 (2000)
M. Balucińska-Church, D. McCammon, Astrophys. J. 400, 699 (1992)
T.W. Berghöfer, S. Bowyer, Astrophys. J. 565, L17 (2002)
T.W. Berghöfer, S. Bowyer, E. Korpela, Astrophys. J. 535, 615 (2000a)
T.W. Berghöfer, S. Bowyer, E. Korpela, Astrophys. J. 545, 695 (2000b)
M. Bonamente, R. Lieu, J.P.D. Mittaz, Astrophys. J. 546, 805 (2001a)
M. Bonamente, R. Lieu, J.P.D. Mittaz, Astrophys. J. 547, L7 (2001b)
M. Bonamente, R. Lieu, J. Nevalainen, J.S. Kaastra, Astrophys. J. 552, L7 (2001c)
M. Bonamente, R. Lieu, J.P.D. Mittaz, Astrophys. J. 561, L63 (2001d)
M. Bonamente, R. Lieu, M.K. Joy, J.H. Nevalainen, Astrophys. J. 576, L688 (2002)
M. Bonamente, M.K. Joy, R. Lieu, Astrophys. J. 585, 722 (2003)
M. Bonamente, R. Lieu, J. Mittaz, J.S. Kaastra, J. Nevalainen, Astrophys. J. 629, 192 (2005a)
M. Bonamente, R. Lieu, J. Kaastra, Astron. Astrophys. 443, 29 (2005b)
M. Bonamente, J. Nevalainen, R. Lieu, Astrophys. J. 668, 796 (2007)
S. Bowyer, T.W. Berghöfer, Astrophys. J. 506, 502 (1998)
S. Bowyer, R.F. Malina, in Extreme Ultraviolet Astronomy, ed. by R.F. Malina, S. Bowyer (Pergamon, New York, 1991), p. 397
S. Bowyer, A. Vikhlinin, J. Korean Astron. Soc. 37, 579 (2004)
S. Bowyer, T.W. Berghöfer, E.J. Korpela, Astrophys. J. 526, 592 (1999)
S. Bowyer, E.J. Korpela, T.W. Berghöfer, Astrophys. J. 548, L35 (2001)
S. Bowyer, E.J. Korpela, M. Lampton, T.W. Jones, Astrophys. J. 605, 168 (2004)
J.N. Bregman, Annu. Rev. Astron. Astrophys. 45, 221 (2007)
J. Bregman, E.J. Lloyd-Davies, Astrophys. J. 644, 167 (2006)
U. Briel, B. Aschenbach, G. Hasinger et al., http://heasarc.gsfc.nasa.gov/docs/rosat/ruh/handbook/rosathandbook.html (1996)
R. Cen, J.P. Ostriker, Astrophys. J. 514, 1 (1999)
L.-M. Cheng, S. Borgani, P. Tozzi et al., Astron. Astrophys. 431, 405 (2005)
R. Davé, R. Cen, J.P. Ostriker et al., Astrophys. J. 552, 473 (2001)
F. De Paolis, G. Ingrosso, A.A. Nucita, D. Orlando, Astron. Astrophys. 398, 435 (2003)
J. de Plaa, N. Werner, A.M. Bykov et al., Astron. Astrophys. 452, 397 (2006)
J.M. Dickey, F.J. Lockman, Annu. Rev. Astron. Astrophys. 28, 215 (1990)
W.V.D. Dixon, S. Sallmen, M. Hurwitz, R. Lieu, Astrophys. J. 550, L25 (2001)
F. Durret, E. Slezak, R. Lieu, S. Dos Santos, M. Bonamente, Astron. Astrophys. 390, 397 (2002)
M. Ehle, R. Breitfellner, R. González-Riestra et al., http://xmm.vilspa.esa.es/external/xmm_user_support/documentation/uhb/index.html (2006)
T.A. Enßlin, R. Lieu, P.L. Biermann, Astron. Astrophys. 344, 409 (1999)
A. Finoguenov, U.G. Briel, J.P. Henry, Astron. Astrophys. 410, 777 (2003)
A. Finoguenov, U.G. Briel, J.P. Henry et al., Astron. Astrophys. 419, 47 (2004)
Y. Fujita, C.L. Sarazin, Astrophys. J. 563, 660 (2001)
Y. Fujita, N. Tawa, K. Hayashida et al., Publ. Astron. Soc. Jpn. (2007 in press) (arXiv:0705.2017)
R. Fujimoto, K. Mitsuda, D. McCammon et al., Publ. Astron. Soc. Jpn. 59, S133 (2007)
M.J. Henriksen, D.S. Hudson, J. Korean Astron. Soc. 37, 299 (2004)
M.J. Henriksen, D.S. Hudson, E. Tittley, Astrophys. J. 610, 762 (2004)
J.S. Kaastra, R. Lieu, J.P.D. Mittaz et al., Astrophys. J. 519, L119 (1999)
J.S. Kaastra, C. Ferrigno, T. Tamura et al., Astron. Astrophys. 365, L99 (2001)
J.S. Kaastra, R. Lieu, J.A.M. Bleeker, R. Mewe, S. Colafrancesco, Astrophys. J. 574, L1 (2002)
J.S. Kaastra, R. Lieu, T. Tamura, F.B.S. Paerels, J. den Herder, Astron. Astrophys. 397, 445 (2003)
J.S. Kaastra, R. Lieu, T. Tamura, F.B.S. Paerels, J.W.A. den Herder, in Soft X-Ray Emission from Clusters of Galaxies and Related Phenomena, ed. by R. Lieu, J. Mittaz, Astrophysics & Space Science Library, vol. 309 (2004), p. 37
J.S. Kaastra, F. Paerels, F. Durret, S. Schindler, P. Richter, Space Sci. Rev. (2008). doi:10.1007/s11214-008-9310-4
P.M.W. Kalberla, W.B. Burton, D. Hartmann et al., Astron. Astrophys. 440, 775 (2005)
R.L. Kelley, K. Mitsuda, C.A. Allen et al., Publ. Astron. Soc. Jpn. 59, S7 (2007)
K. Koyama, H. Tsunemi, T. Dotani et al., Publ. Astron. Soc. Jpn. 59, S23 (2007)
A. Lecavelier des Etangs, Gopal-Krishna, F. Durret, Astron. Astrophys. 421, 503 (2004)
R. Lieu, J.P.D. Mittaz, S. Bowyer et al., Astrophys. J. 458, L5 (1996a)
R. Lieu, J.P.D. Mittaz, S. Bowyer et al., Science 274, 1335 (1996b)
R. Lieu, W.-H. Ip, W.I. Axford, M. Bonamente, Astrophys. J. 510, L25 (1999a)
R. Lieu, M. Bonamente, J.P.D. Mittaz, Astrophys. J. 517, L91 (1999b)
R. Lieu, M. Bonamente, J.P.D. Mittaz et al., Astrophys. J. 527, L77 (1999c)
R. Lieu, M. Bonamente, J.P.D. Mittaz et al., Astron. Astrophys. 364, 497 (2000)
K. Matsushita, E. Belsole, A. Finoguenov, H. Böhringer, Astron. Astrophys. 386, 77 (2002)
K. Matsushita, Y. Fukazawa, J.P. Hughes et al., Publ. Astron. Soc. Jpn. 59, S327 (2007)
K. Mitsuda, M. Bautz, H. Inoue et al., Publ. Astron. Soc. Jpn. 59, S1 (2007)
J.P.D. Mittaz, R. Lieu, F.J. Lockman, Astrophys. J. 498, L17 (1998)
R. Morrison, D. McCammon, Astrophys. J. 270, 119 (1983)
J. Nevalainen, R. Lieu, M. Bonamente, D. Lumb, Astrophys. J. 584, 716 (2003)
J. Nevalainen, M. Bonamente, J. Kaastra, Astrophys. J. 656, 733 (2007)
W.R. Oegerle, L. Cowie, A. Davidsen et al., Astrophys. J. 560, 187 (2001)
V. Petrosian, Astrophys. J. 557, 560 (2001)
V. Petrosian, Y. Rephaeli, A.M. Bykov, Space Sci. Rev. (2008). doi:10.1007/s11214-008-9327-2
Y. Rephaeli, J. Nevalainen, T. Ohashi, A. Bykov, Space Sci. Rev. (2008). doi:10.1007/s11214-008-9314-7
C.L. Sarazin, Astrophys. J. 520, 529 (1999)
C.L. Sarazin, J.C. Kempner, Astrophys. J. 533, 73 (2000)
C.L. Sarazin, R. Lieu, Astrophys. J. 494, L177 (1998)
K. Sato, N.Y. Yamasaki, M. Ishida et al., Publ. Astron. Soc. Jpn. 59, 299 (2007)
K. Sato, K. Matsushita, Y. Ishisaki, N.Y. Yamasaki, M. Ishida, S. Sasaki, T. Ohashi, Publ. Astron. Soc. Jpn. (2008 in press). arXiv:0707.4342
P.J. Serlemitsos, Y. Soong, K.-W. Chan et al., Publ. Astron. Soc. Jpn. 59, S9 (2007)
L. Strüder, U. Briel, K. Dennerl et al., Astron. Astrophys. 365, L18 (2001)
Y. Takei, J.P. Henry, A. Finoguenov et al., Publ. Astron. Soc. Jpn. 59, S339 (2007a)
Y. Takei, J.P. Henry, A. Finoguenov et al., Astrophys. J. 655, 831 (2007b)
M. Takizawa, T. Naito, Astrophys. J. 535, 586 (2000)
T. Tamura, Y. Takei, K. Mitsuda, T. Ohashi, K. Matsushita, the Suzaku A 2052 team, Proc. “Tracing Cosmic Evolution with Clusters of Galaxies: Six Years Later”, Sesto, Italy, 25–29 June 2007
M.J.L. Turner, A. Abbey, M. Arnaud et al., Astron. Astrophys. 365, L27 (2001)
B.J. Wargelin, M. Markevitch, M. Juda et al., Astrophys. J. 607, 596 (2004)
N. Werner, J.S. Kaastra, Y. Takei et al., Astron. Astrophys. 468, 849 (2007)
R. Willingale, A.D.P. Hands, R.S. Warwick, S.L. Snowden, D.N. Burrows, Mon. Not. R. Astron. Soc. 343, 995 (2003)
J. Wilms, A. Allen, R. McCray, Astrophys. J. 542, 914 (2000)
M. Yan, H.R. Sadeghpour, A. Dalgarno, Astrophys. J. 496, 1044 (1998)
K. Yoshikawa, S. Sasaki, Publ. Astron. Soc. Jpn. 58, 641 (2006)
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Durret, F., Kaastra, J.S., Nevalainen, J. et al. Soft X-Ray and Extreme Ultraviolet Excess Emission from Clusters of Galaxies. Space Sci Rev 134, 51–70 (2008). https://doi.org/10.1007/s11214-008-9313-8
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DOI: https://doi.org/10.1007/s11214-008-9313-8