Main Image
Volume 306 - XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop (MULTIF2017) - Astrophysics of High Energy Cosmic Sources
The Multifrequency Behavior of Sagittarius A*
A. Eckart,* N. Fazeli, G. Busch, B. Shahzamanian, M. Subroweit, F. Peissker, N. Sabha, M. Valencia-S., M. Horrobin, C. Straubmeier, S. Rost, J. Schneeloch, A. Borkar, V. Karas, S. Britzen, A. Zensus, F. Kamali
*corresponding author
Full text: pdf
Pre-published on: 2018 April 20
Published on: 2018 May 30
The Galactic Center is the closest galactic nucleus that allows us to determine the multi-frequency behavior of the supermassive black hole counterpart Sagittarius A* in great detail. We put SgrA*, as a nucleus with weak activity, into the context of nearby low luminosity nuclei. Possible hints for galaxy evolution of these sources across the [NII]-based diagnostic diagram can be inferred from dependencies on the masses, excitation ratios, and radio luminosities within this diagram.
For SgrA* we also discuss responsible radiation mechanisms covering results from the radio, infrared, and X-ray regime. We also address the question of justifying the hot-spot model for describing flare profiles in light curves. Since the brightness of LLAGN is also linked to star formation we briefly discuss the possibility of having stars formed in the immediate vicinity of supermassive black holes and possibly even in a mildly relativistic environment.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.