Accretion induced black hole spin up in magnetized collapsars
High Energy Astrophysical Phenomena
2020-12-08 v1
Abstract
We study the gravitational collapse and formation of the Kerr black hole from the rotating progenitor star. We follow the evolution of black hole spin, coupled with its increasing mass. We study the effect of different level of rotation endowed in the progenitor's envelope, and we out some constraints on the final black hole parameters. Our method is based on semi-analytical computations that involve stellar-evolution models of different progenitors. We also follow numerically the black hole evolution and spacetime metric changes during the collapse, via General Relativistic MHD modeling. (abridged)
Cite
@article{arxiv.2012.03591,
title = {Accretion induced black hole spin up in magnetized collapsars},
author = {Agnieszka Janiuk and Dominika Król},
journal= {arXiv preprint arXiv:2012.03591},
year = {2020}
}
Comments
13 pages. To be published in Proceedings of RAGtime 20-22: Workshops on Black Holes and Neutron Stars; Z. Stuchlik, G. Torok, V. Karas (Eds.)