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Advances from Recent Multi-wavelength Campaigns on Sgr A*

Published online by Cambridge University Press:  09 February 2017

Daryl Haggard
Daryl Haggard*
Affiliation:
McGill Space Institute, McGill University Department of Physics 3550 University Street, Montreal, QC, Canada email: [email protected]
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Abstract

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Sagittarius A* is the closest example of a supermassive black hole and our proximity allows us to detect emission from its accretion flow in the radio, submillimeter, near IR, and X-ray regimes. Ambitious monitoring campaigns have yielded rich multi-wavelength, time-resolved data that have the power to probe the physical processes underlying Sgr A*’s quiescent and flare emission. Here, I review the status of Sgr A* X-ray monitoring campaigns from the Chandra X-ray Observatory (also XMM Newton, and Swift), and efforts to coordinate these with observations across the electromagnetic spectrum. I also discuss how these observations constrain models for Sgr A*’s variability, which range from tidal disruption of asteroids to gravitational lensing to collimated outflows to magnetic reconnection.

Keywords

Galaxy: centerblack hole physicsaccretionaccretion disksgalaxies: active
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S322: The Multi-Messenger Astrophysics of the Galactic Centre , July 2016 , pp. 1 - 10
Copyright
Copyright © International Astronomical Union 2017 

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