POSADA AGUIRRE, Nelson Camilo. Tidal deformability of ultracompact Schwarzschild stars and their approach to the black hole limit. In Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars. Opava: Slezská univerzita v Opavě, Fyzikální ústav v Opavě, 2023, p. 1-11. ISBN 978-80-7510-577-6.
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Basic information
Original name Tidal deformability of ultracompact Schwarzschild stars and their approach to the black hole limit
Authors POSADA AGUIRRE, Nelson Camilo (170 Colombia, guarantor, belonging to the institution).
Edition Opava, Proceedings of RAGtime 23-25: Workshops on black holes and neutron stars, p. 1-11, 11 pp. 2023.
Publisher Slezská univerzita v Opavě, Fyzikální ústav v Opavě
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10308 Astronomy
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
WWW URL
RIV identification code RIV/47813059:19630/23:A0000333
Organization unit Institute of physics in Opava
ISBN 978-80-7510-577-6
ISSN 2336-5668
Keywords in English black hole mimicker; gravastar; interior solutions; Tidal deformability
Tags RIV24, UF
Tags International impact, Reviewed
Changed by Changed by: Mgr. Pavlína Jalůvková, učo 25213. Changed: 26/2/2024 14:01.
Abstract
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.
PrintDisplayed: 18/7/2024 01:33