An evolving hot spot orbiting around Sgr A*
Astrophysics
2014-11-18 v1
Abstract
Here we report on recent near-infrared observations of the Sgr A* counterpart associated with the super-massive ~ 4x10^6 M_sun black hole at the Galactic Center. We find that the May 2007 flare shows the highest sub-flare contrast observed until now, as well as evidence for variations in the profile of consecutive sub-flares. We modeled the flare profile variations according to the elongation and change of the shape of a spot due to differential rotation within the accretion disk.
Cite
@article{arxiv.0810.0138,
title = {An evolving hot spot orbiting around Sgr A*},
author = {M. Zamaninasab and A. Eckart and L. Meyer and R. Schoedel and M. Dovciak and V. Karas and D. Kunneriath and G. Witzel and R. Giessuebel and S. Koenig and C. Straubmeier and A. Zensus},
journal= {arXiv preprint arXiv:0810.0138},
year = {2014}
}
Comments
7 pages, 5 figures, contribution for the conference "The Universe under the Microscope" (AHAR 2008), to be published in Journal of Physics: Conference Series by Institute of Physics Publishing