Research Seminars @ Illinois

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Tailored for undergraduate researchers, this calendar is a curated list of research seminars at the University of Illinois. Explore the diverse world of research and expand your knowledge through engaging sessions designed to inspire and enlighten.

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Astrophysics, Relativity, and Cosmology Seminar - Tom Baumgarte (Bowdoin College) "Capture of primordial black holes by neutron stars"

Event Type
Department of Physics
Loomis 464
wifi event
May 1, 2024   12:00 pm  
Tom Baumgarte
Deanna Frye
Originating Calendar
Physics - Astrophysics, Relativity, and Cosmology Seminar
Primordial black holes (PBHs) - if they exist - interact with stars.  Sufficiently compact stars, in particular neutron stars, are able to capture PBHs gravitationally, which results in the PBH being swallowed by the star.   Once inside the star, the ``endoparasitic"  PBH accretes stellar material, ultimately inducing a dynamical collapse of the entire host star.  In this talk I will invoke simple estimates, point-mass approximations, and numerical relativity simulations in order to explore different aspects of this scenario.   Specifically, I will discuss the capture process, will highlight characteristic features of emitted gravitational wave signals, will examine the stability of stars hosting a black hole in the interior, and will present simulations of the final dynamical collapse.
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