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On the past activity of Sgr A*

Published online by Cambridge University Press:  22 May 2014

G. Ponti ,
M. R. Morris ,
M. Clavel ,
R. Terrier ,
A. Goldwurm ,
S. Soldi ,
R. Sturm ,
F. Haberl  and
K. Nandra
G. Ponti
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, D-85748, Garching bei München, Germany email: [email protected]
M. R. Morris
Affiliation:
Dept. of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
M. Clavel
Affiliation:
AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10 rue A. Domon et L. Duquet, 75205 Paris Cedex 13, France Service d'Astrophysique/IRFU/DSM, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
R. Terrier
Affiliation:
AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10 rue A. Domon et L. Duquet, 75205 Paris Cedex 13, France
A. Goldwurm
Affiliation:
AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10 rue A. Domon et L. Duquet, 75205 Paris Cedex 13, France Service d'Astrophysique/IRFU/DSM, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
S. Soldi
Affiliation:
AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS/IN2P3, CEA/Irfu, Observatoire de Paris, Sorbonne Paris Cité, 10 rue A. Domon et L. Duquet, 75205 Paris Cedex 13, France
R. Sturm
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, D-85748, Garching bei München, Germany email: [email protected]
F. Haberl
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, D-85748, Garching bei München, Germany email: [email protected]
K. Nandra
Affiliation:
Max-Planck-Institut für extraterrestrische Physik, D-85748, Garching bei München, Germany email: [email protected]
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Abstract

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Recent X-ray emission events in the Galactic center would be expected to generate an X-ray reflection response within the surrounding clouds of the central molecular zone, in the Galactic disk and even, if powerful enough, in clouds outside our Galaxy. We review here the current constraints on Sgr A*'s past activity obtained through this method, with particular emphasis on the strong evidence that has been gathered for multiple X-ray flashes during the past few hundred years.

Keywords

ISM: reflection nebulae — Galaxy: center — X-rays: ISM — surveys — radiation mechanisms: nonthermal
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S303: The Galactic Center: Feeding and Feedback in a Normal Galactic Nucleus , October 2013 , pp. 333 - 343
Copyright
Copyright © International Astronomical Union 2014 

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