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Galactic Center: Implications of Recent Chandra Observations for Spherical Accretion Models of Sgr A*

Published online by Cambridge University Press:  13 May 2016

Robert F. Coker  and
Sera Markoff
Robert F. Coker
Affiliation:
Department of Physics and Astronomy, University of Leeds, Leeds LS2 9JT UK
Sera Markoff
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany

Abstract

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At the center of the Milky Way lurks a unique compact nonthermal radio source, Sgr A*. It is thought to be powered by a 2.6 × 106 solar mass black hole that is accreting the stellar winds from the numerous early-type stars that exist in the central parsec. However, until recent high resolution Chandra observations, Sgr A* had never been unequivocably detected at wavelengths shorter than the sub-millimeter. We present a spherical accretion model which is consistent with both the flux and steep spectral shape of the X-ray emission from Sgr A*.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 32 - 35
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Baganoff, F.K., et al. 2000, ApJ, submitted.Google Scholar
Balbus, S. A. & Hawley, J. F. 1991, ApJ, 376, 214.Google Scholar
Bondi, H. & Hoyle, F. 1944, MNRAS, 104, 273.Google Scholar
Coker, R.F. & Melia, F. 1997, ApJ, 488, L149.CrossRefGoogle Scholar
Coker, R.F. & Melia, F. 2000, ApJ, 534, 723.Google Scholar
Falcke, H., et al. 1998, ApJ, 499, 731.Google Scholar
Falcke, H. & Markoff, S. 2000, A&A, 362, 113.Google Scholar
Genzel, R., et al. 1996, ApJ, 472, 153.Google Scholar
Genzel, R., et al. 2000, MNRAS, 317, 348.CrossRefGoogle Scholar
Ghez, A.M., et al. 2000, Nature, 407, 349.Google Scholar
Melia, F., Liu, S., & Coker, R.F. 2000, ApJ, submitted.Google Scholar
Najarro, F., et al. 1997, A&A, 325, 700.Google Scholar
Quataert, E., Narayan, R., & Reid, M.J. 1999, ApJ, 517, L101.Google Scholar
Predehl, P. & Zinnecker, H. 1996, in ASP Conf. Ser. Vol 102, The Galactic Center, ed. Gredel, R. (San Francisco: ASP), 415.Google Scholar
Reid, M.J., et al. 1999, ApJ, 524, 816.Google Scholar
Serabyn, E., et al. 1997, ApJ, 490, L77.CrossRefGoogle Scholar
Backer, D.C. & Sramek, R.A. 1999, ApJ, 524, 805.Google Scholar
Zhao, J.-H., Bower, GGG., & Goss, W.M. 2000, ApJ, in press.Google Scholar