D
2023
Tidal deformability of ultracompact Schwarzschild stars and their approach to the black hole limit
POSADA AGUIRRE, Nelson Camilo
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
Type of outcome
Stať ve sborníku
Field of Study
10308 Astronomy
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
Publication form
printed version "print"
RIV identification code
RIV/47813059:19630/23:A0000333
Organization unit
Institute of physics in Opava
Keywords in English
black hole mimicker; gravastar; interior solutions; Tidal deformability
Tags
International impact, Reviewed
V originále
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.
Displayed: 29/12/2024 13:06