Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-28T01:44:21.210Z Has data issue: false hasContentIssue false
  • English
  • Français

Centaurus A at Hard X-Rays and Soft Gamma-Rays

Published online by Cambridge University Press:  02 January 2013

H. Steinle
H. Steinle
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, Postfach 1312, 85741 Garching,Germany. Email: hcs@mpe.mpg.de
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Cen A, at a distance of less than 4 Mpc, is the nearest radio-loud AGN. Its emission is detected from radio to very-high energy gamma-rays. Despite the fact that Cen A is one of the best studied extragalactic objects the origin of its hard X-ray and soft gamma-ray emission (100 keV <E< 50 MeV) is still uncertain. Observations with high spatial resolution in the adjacent soft X-ray and hard gamma-ray regimes suggest that several distinct components such as a Seyfert-like nucleus, relativistic jets, and even luminous X-ray binaries within Cen A may contribute to the total emission in the MeV regime that has been detected with low spatial resolution. As the Spectral Energy Distribution of Cen A has its second maximum around 1 MeV, this energy range plays an important role in modeling the emission of (this) AGN. As there will be no satellite mission in the near future that will cover this energies with higher spatial resolution and better sensitivity, an overview of all existing hard X-ray and soft gamma-ray measurements of Cen A is presented here defining the present knowledge on Cen A in the MeV energy range.

Keywords

galaxies: individual (NGC 5128, Centaurus A)X-rays: galaxiesgamma rays: observations
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 27 , Special Issue 4: The Many Faces of Centaurus A , 2010 , pp. 431 - 438
Copyright
Copyright © Astronomical Society of Australia 2010

References

Abdo, A. A. et al. , 2009, ApJS, 183, 46CrossRefGoogle Scholar
Aharonian, F. et al. (H.E.S.S. Collaboration), 2009, ApJ, 695, L40Google Scholar
Baity, W. A. et al. , 1981, ApJ, 244, 429CrossRefGoogle Scholar
von Ballmoos, P., Diehl, R. & Schönfelder, V., 1987, ApJ, 312, 134CrossRefGoogle Scholar
Bloser, P. F. et al. , 2009, Astro2010: The Astronomy and Astrophysics Decadal Survey, Technology Development Papers, 7Google Scholar
Boggs, S. E. et al. , 2008, AAS HEAD Meeting, 10, 37.02Google Scholar
Bond, I. A. et al. , 1996, A&A, 307, 708Google Scholar
Bouchet, L., Roques, J. P., Mandrou, P., Strong, A., Diehl, R., Lebrun, F. & Terrier, R., 2005, ApJ, 635, 1103Google Scholar
Bouchet, L., Jourdain, E., Roques, J.-P., Strong, A., Diehl, R., Lebrun, F. & Terrier, R., 2008, ApJ, 679, 1315CrossRefGoogle Scholar
Cappellari, M., Neumayer, N., Reunanen, J., van der Werf, P. P., de Zeeuw, P. T. & Rix, H.-W., 2009, MNRAS, 394, 660CrossRefGoogle Scholar
Collmar, W., 2001, in ESA SP-459, Exploring the gamma-ray universe, Proceedings of the Fourth INTEGRAL Workshop, 4–8 September 2000, Alicante, Spain, Eds. Battrick, B., Gimenez, A., Reglero, V. & Winkler, C. (Noordwijk: ESA Publications Division), 241Google Scholar
Dermer, C. D. & Gehrels, N., 1995, ApJ, 447, 103Google Scholar
Diehl, R. et al. , 2009, Astro2010: The Astronomy and Astrophysics Decadal Survey, Science White Papers, 66 (astro-ph/0902.2494v1)Google Scholar
Dufour, R. J., van den Bergh, S., Harvel, C. A., Martins, D. M., Schiffer, F. H. III, Talbot, R. J. Jr., Talent, D. L. & Wells, D. C., 1979, AJ, 84, 284Google Scholar
Feigelson, E. D., Schreier, E. J., Devaille, J. P., Giacconi, R., Grindlay, J. E. & Lightman, A. P., 1981, ApJ, 251, 31Google Scholar
Gehrels, N., 1997, Nuovo Cimento B, 112B, 11Google Scholar
Gehrels, N. & Cannizzo, J. K., 2009, ExA, 25, 111Google Scholar
Ghisellini, G., Tavecchio, F. & Chiaberge, M., 2005, A&A, 432, 401Google Scholar
Graham, J. A., 1979, ApJ, 232, 60CrossRefGoogle Scholar
Grandi, P. et al. , 2003, ApJ, 593, 160CrossRefGoogle Scholar
Greiner, et al. , 2009, ExA, 23, 91Google Scholar
Hall, R. D., Walraven, G. D., Djuth, F. T., Haymes, R. C. & Meegan, C. A., 1976, ApJ, 210, 631Google Scholar
Hardcastle, M. J., Cheung, C. C., Feain, I. J. & Stawarz, L., 2009, MNRAS, 393, 1041CrossRefGoogle Scholar
Harris, G. L. H., Hesser, J. E., Harris, H. C. & Curry, P. J., 1984, ApJ, 287, 175CrossRefGoogle Scholar
Harris, M. J., Share, G. H., Leising, M. D. & Grove, J. E., 1993, ApJ, 416, 601CrossRefGoogle Scholar
Hui, X., Ford, H. C., Ciardullo, R. & Jacobi, G. H., 1993, ApJ, 414, 463Google Scholar
Israel, F. P., 1998, A&ARv, 8, 237Google Scholar
Johnson, W. N., Zdziarski, A. A., Madejski, G. M., Paciesas, W. S., Steinle, H. & Lin, Y.-C., 1997, AIPC, 410, 283Google Scholar
Jones, D. L. et al. , 1996, ApJ, 466, L63CrossRefGoogle Scholar
Jourdain, E. et al. , 1993, ApJ, 412, 586Google Scholar
Kinzer, R. L. et al. , 1995, ApJ, 449, 105Google Scholar
Kraft, R. P., Kregenow, J. M., Forman, W. R., Jones, C. & Murray, S. S., 2001, ApJ, 560, 675CrossRefGoogle Scholar
Kraft, R. P., Vázquez, S. E., Forman, W. R., Jones, C., Murray, S. S., Hardcastle, M. J., Worrall, D. M. & Churazov, E., 2003, ApJ, 592, 129CrossRefGoogle Scholar
Maisack, M. et al. , 1992, A&A, 262, 433Google Scholar
Marconi, A., Schreier, E. J., Koekemoer, A., Capetti, A., Axon, D., Macchetto, D. & Caon, N., 2000, ApJ, 528, 276CrossRefGoogle Scholar
Marconi, A., Capetti, A., Axon, D. J., Koekemoer, A., Macchetto, F. D. & Schreier, E. J., 2001, ApJ, 549, 915CrossRefGoogle Scholar
McConnell, M. L. et al. , 2000, ApJ, 543, 928Google Scholar
Morganti, R., Fosbury, R. A. E., Hook, R. N., Robinson, A. & Tsvetanov, Z., 1992, MNRAS, 256, 1Google Scholar
Morini, M., Anselmo, F. & Molteni, D., 1989, ApJ, 347, 750Google Scholar
Nolan, P. L. et al. , 1996, ApJ, 459, 100Google Scholar
Orellana, M. & Romero, G. E., 2009, AIPC, 1123, 242Google Scholar
Petry, D., Beckmann, V., Halloin, H. & Strong, A., 2009, A&A, 507, 549Google Scholar
Pinkau, K., 2009, ExA, 25, 157Google Scholar
Rejkuba, M., 2004, A&A, 413, 903Google Scholar
Rothschild, R. E. et al. , 2006, ApJ, 641, 801Google Scholar
Silge, J. D., Gebhardt, K., Bergmann, M. & Richstone, D., 2005, AJ, 130, 406Google Scholar
Steinle, H. et al. , 1998, A&A, 330, 97Google Scholar
Steinle, H. et al. , 1999, AdSpR, 23, 911Google Scholar
Steinle, H., Dennerl, K. & Englhauser, J., 2000, A&A, 357, L57Google Scholar
Thomson, R. C., 1992, MNRAS, 257, 689CrossRefGoogle Scholar
Turner, T. J., George, I. M., Mushotzky, R. F. & Nandra, K., 1997, ApJ, 475, 118CrossRefGoogle Scholar