May 26 – 31, 2024
Western University
America/Toronto timezone
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(G*) Marginally Outer-Trapped Tori in maximally extended Schwarzschild spacetime

May 28, 2024, 10:45 AM
15m
SSC Rm 2028 (cap. 135) (Social Science Centre, Western U.)

SSC Rm 2028 (cap. 135)

Social Science Centre, Western U.

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Theoretical Physics / Physique théorique (DTP-DPT) (DTP) T1-2 Black Holes I | Trous noirs I (DPT)

Speaker

Kam To Billy Sievers (McMaster University)

Description

The behaviour of apparent horizons throughout a black hole merger process is an unresolved problem. Numerical simulations have provided insight to the fate of the two horizons. By considering marginally outer-trapped surfaces (MOTSs) as apparent horizon candidates, self-intersecting MOTSs were found in the merger process and play a key role in the merger evolution [arXiv:1903.05626]. A similar class of self-intersecting MOTSs have then been investigated in explicitly known black hole solutions, including the Schwarzschild solution [arXiv:2005.05350; 2111.09373; 2210.15685]. We present findings from our investigations of MOTSs in the maximally-extended Kruskal black hole spacetime [arXiv:2312.00769]. The spacetime contains an Einstein-Rosen bridge that connects two asymptotic regions. This allows for novel MOTSs that span both asymptotic regions with non-spherical topology, such as that of a torus. These MOTSs are comparable to those found in numerical simulations and have unexpected behaviour with regards to their stability spectrum.

Keyword-1 mots
Keyword-2 black hole
Keyword-3 merger

Author

Kam To Billy Sievers (McMaster University)

Co-authors

Hari Kunduri (Memorial University of Newfoundland) Ivan Booth Liam Newhook Robie Hennigar Sarah Muth

Presentation materials