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Variable and polarized emission from SgrA*†

Published online by Cambridge University Press:  01 August 2006

A. Eckart ,
R. Schödel ,
L. Meyer ,
C. Straubmeier ,
M. Dovčiak ,
V. Karas ,
M. R. Morris  and
F. K. Baganoff
A. Eckart
Affiliation:
I. Physikalisches Institut, University of Cologne, Zülpicher Str. 77; D-50937 Köln, Germany
R. Schödel
Affiliation:
I. Physikalisches Institut, University of Cologne, Zülpicher Str. 77; D-50937 Köln, Germany
L. Meyer
Affiliation:
I. Physikalisches Institut, University of Cologne, Zülpicher Str. 77; D-50937 Köln, Germany
C. Straubmeier
Affiliation:
I. Physikalisches Institut, University of Cologne, Zülpicher Str. 77; D-50937 Köln, Germany
M. Dovčiak
Affiliation:
Astronomical Institute, Academy of Sciences, Boční II, CZ-14131 Prague, Czech Republic
V. Karas
Affiliation:
Astronomical Institute, Academy of Sciences, Boční II, CZ-14131 Prague, Czech Republic
M. R. Morris
Affiliation:
Department of Physics & Astronomy, UCLA, Los Angeles, CA90095-1547, USA
F. K. Baganoff
Affiliation:
Kavli Institute for Astrophysics and Space Research, MIT, Cambridge, MA 02139-4307, USA
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Abstract

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The super-massive black hole in the Galactic Center (Sagittarius A*) is one of the most exciting targets in the sky. At a distance of ∼ 8 kpc it is about one hundred times closer than the second nearest nucleus of a similar galaxy, M31, and therefore the closest galactic nucleus that we can study. Here we report on the modeling of polarized near-infrared flare emission from SgrA* using a model in which a hot spot is moving on a relativistic orbit around the massive black hole. We also summarize the results from simultaneous radio/near-infrared/X-ray measurements of flare emission.

Keywords

Galaxy: center – Galaxy: nucleus – accretionaccretion disks – black hole physics – radiation mechanisms: non-thermal – relativity
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 181 - 185
Copyright
Copyright © International Astronomical Union 2007

References

Bélanger, G., Terrier, R., DeJager, O. Jager, O., Goldwurm, A. & Melia, F. 2006, Journal of Physics: Conference Series, 54, 420 (astro-ph/0604337)Google Scholar
Connors, P. A. & Stark, R. F. 1977, Nature, 269, 128CrossRefGoogle Scholar
Dovčiak, M., Karas, V. & Yaqoob, T. 2004, ApJS, 153, 205Google Scholar
Eckart, A., Baganoff, F. K., Morris, M., Bautz, M. W. et al. 2004, A&A, 427, 1Google Scholar
Eckart, A., Schödel, R. & Straubmeier, C. 2005, The Black Hole at the Center of the Milky Way (London: Imperial College Press)CrossRefGoogle Scholar
Eckart, A., Schödel, R., Meyer, L., Trippe, S., Ott, T. & Genzel, G. 2006a, A&A, 455, 1Google Scholar
Eckart, A.Baganoff, F. K., Schdel, R., Morris, M. et al. , 2006b, A&A, 450, 535Google Scholar
Genzel, R., Schdel, R., Ott, T., Eckart, A., Alexander, T., Lacombe, F., Rouan, D. & Aschenbach, B. 2003, Nature, 425, 934Google Scholar
Gillessen, S., Davies, R., Kissler-Patig, M., Lehnert, M. et al. 2005, ESO Messenger, 120, 26Google Scholar
Marrone, D. P., Moran, J. M., Zhao, J.-H. & Rao, R. 2006, ApJ, 640, 308Google Scholar
Mauerhan, J. C., Morris, M., Walter, F. & Baganoff, F. K. 2005, ApJ, 623, L25Google Scholar
Meyer, L., Eckart, A., Schödel, R., Duschl, W. J., Muzic, K., Dovčiak, M. & Karas, V. 2006a, A&A, 460, 15Google Scholar
Meyer, L., Schödel, R., Eckart, A., Karas, V., Dovčiak, M. & Duschl, W. J. 2006b, A&A, 458, L25Google Scholar
Yusef-Zadeh, F., Bushouse, H., Dowell, C. D., Wardle, M., Roberts, D. et al. 2006a, ApJ, 644, 198Google Scholar
Yusef-Zadeh, F., Roberts, D., Wardle, M., Heinke, C. O., Bower, G. C. et al. 2006b, ApJ, 650, 189CrossRefGoogle Scholar