Novel mechanism for vorticity generation in black-hole accretion disks
High Energy Astrophysical Phenomena
2015-06-08 v1
Abstract
Vorticity generation in accretion disks around Schwarzschild and Kerr black holes is investigated in the context of magnetofluid dynamics derived for both General Relativity (GR), and modified gravity formulations. In both cases, the Kerr geometry leads to a "stronger" generation of vorticity than its Schwarzschild counterpart. Of the two principal sources, the relativistic drive peaks near the innermost stable circular orbit (isco), whereas the baroclinic drive dominates at larger distances. Consequences of this new relativistic vorticity source are discussed in several astrophysical settings.
Keywords
Cite
@article{arxiv.1506.01772,
title = {Novel mechanism for vorticity generation in black-hole accretion disks},
author = {Chinmoy Bhattacharjee and Rupam Das and Swadesh M. Mahajan},
journal= {arXiv preprint arXiv:1506.01772},
year = {2015}
}
Comments
8 figures