Video URL
https://pirsa.org/20110049Disappearing stars without a trace: what is their maximum angular momentum?
APA
Murguia Berthier, A. (2020). Disappearing stars without a trace: what is their maximum angular momentum? . Perimeter Institute for Theoretical Physics. https://pirsa.org/20110049
MLA
Murguia Berthier, Ariadna. Disappearing stars without a trace: what is their maximum angular momentum? . Perimeter Institute for Theoretical Physics, Nov. 12, 2020, https://pirsa.org/20110049
BibTex
@misc{ scivideos_PIRSA:20110049, doi = {10.48660/20110049}, url = {https://pirsa.org/20110049}, author = {Murguia Berthier, Ariadna}, keywords = {Strong Gravity}, language = {en}, title = {Disappearing stars without a trace: what is their maximum angular momentum? }, publisher = {Perimeter Institute for Theoretical Physics}, year = {2020}, month = {nov}, note = {PIRSA:20110049 see, \url{https://scivideos.org/index.php/pirsa/20110049}} }
Ariadna Murguia Berthier University of California, Santa Cruz
Abstract
We have tentative evidence of massive stars that disappear without a bright transient. It is commonly argued that this massive stars have low angular momentum and can collapse into a black hole without significant feedback. In this talk I will make use of general-relativistic hydrodynamical simulations to understand the flow around a newly-formed black hole. I will discuss the angular momentum needed in order for the infalling material to be accreted into the black hole without forming a centrifugally supported structure, thus generating no effective feedback. If the feedback from the black hole is significant, the collapse can be halted and, as a result, it is likely followed by a bright transient. With the results from the simulation, I will constrain the maximum rotation rate for the disappearing massive progenitors know, and set a limit on the rate of expected disappearing stars.