Polarimetry and strong gravity effects from spots orbiting near a black hole
Abstract
We study the modulation of the observed radiation flux and the associated changes in the polarization degree and angle that are predicted by the orbiting spot model for flares from accreting black holes. The geometric shape of the emission region influences the resulting model lightcurves, namely, the emission region of a spiral shape can be distinguished from a simpler geometry of a small orbiting spot.
Keywords
Cite
@article{arxiv.1901.06515,
title = {Polarimetry and strong gravity effects from spots orbiting near a black hole},
author = {Vladimir Karas and Michal Dovciak and Jiri Svoboda and Wenda Zhang and Giorgio Matt and Andreas Eckart and Michal Zajacek},
journal= {arXiv preprint arXiv:1901.06515},
year = {2022}
}
Comments
5 pages, 2 figures; to appear in Proceedings of the 15th Marcel Grossman Meeting on General Relativity - the session AC1 on "Spectral and Temporal properties of Black Holes and Neutron Stars and the Theoretical Models" by Sandip Chakrabarti (Rome, 1-7 July 2018), edited by Elia Battistelli, Robert T. Jantzen, and Remo Ruffini, in preparation