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Event horizon scale emission models for Sagittarius A*

Published online by Cambridge University Press:  22 May 2014

J. Dexter
J. Dexter*
Affiliation:
Departments of Physics and Astronomy, University of California, Berkeley, CA, USA email: jdexter@berkeley.edu
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Abstract

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Very long baseline interferometry observations at millimeter wavelengths have detected source structure in Sgr A* on event horizon scales. Near-infrared interferometry will achieve similar resolution in the next few years. These experiments provide an unprecedented opportunity to explore strong gravity around black holes, but interpreting the data requires physical modeling. I discuss the calculation of images, spectra, and light curves from relativistic MHD simulations of black hole accretion. The models provide an excellent description of current observations, and predict that we may be on the verge of detecting a black hole shadow, which would constitute the first direct evidence for the existence of black holes.

Keywords

accretionaccretion disks – black hole physics – relativity
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. 298 - 302
Copyright
Copyright © International Astronomical Union 2014 

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