Tidal deformability of ultracompact Schwarzschild stars and their approach to the black hole limit

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19630%2F23%3AA0000333" target="_blank" >RIV/47813059:19630/23:A0000333 - isvavai.cz</a>
Result on the web
<a href="https://proceedings.physics.cz/wp-content/uploads/2023/12/01_pos.pdf" target="_blank" >https://proceedings.physics.cz/wp-content/uploads/2023/12/01_pos.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Tidal deformability of ultracompact Schwarzschild stars and their approach to the black hole limit
Original language description
A well-known result in general relativity is that the tidal Love numbers of black holes vanish. In contrast, different configurations of a black hole may have non-vanishing Love numbers. For instance, it has been conjectured recently that the Love number of generic exotic compact objects (ECOs) shows a logarithmic behaviour. Here, we analyse the ultracompact Schwarzschild star, which allows the compactness to cross and go beyond the Buchdahl limit. This Schwarzschild star has been shown to be a good black hole mimicker. Moreover, it has been found that the Love number of these objects approaches zero as their compactness approaches the black hole limit. Here, we complement those results by showing that the Love number for these configurations follows an exponentially decaying behaviour rather than the logarithmic behaviour proposed for generic ECOs.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars
ISBN
9788075105776
ISSN
2336-5668
e-ISSN
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Number of pages
11
Pages from-to
1-11
Publisher name
Slezská univerzita v Opavě, Fyzikální ústav v Opavě
Place of publication
Opava
Event location
Opava
Event date
Nov 27, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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