POSADA AGUIRRE, Nelson Camilo, Cecilia CHIRENTI and Victor GUEDES. Where is Love? Tidal deformability in the black hole limit. In RAGtime 23: 6-10 September, 2021 - Workshop on Black Holes and Neutron Stars. 2021.
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Basic information
Original name Where is Love? Tidal deformability in the black hole limit
Authors POSADA AGUIRRE, Nelson Camilo, Cecilia CHIRENTI and Victor GUEDES.
Edition RAGtime 23: 6-10 September, 2021 - Workshop on Black Holes and Neutron Stars, 2021.
Other information
Original language English
Type of outcome Presentations at conferences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW URL
Organization unit Institute of physics in Opava
Tags FÚ, FÚ2021, RAGtime 23
Tags International impact
Changed by Changed by: Ing. Petra Ryšavá, učo 5220. Changed: 14/11/2021 20:22.
Abstract
One of the macroscopically measurable effects of gravity is the tidal deformability of astrophysical objects, which can be quantified by their tidal Love numbers. For planets and stars, these numbers measure the resistance of their material against the tidal forces, and the resulting contribution to their gravitational multipole moments. According to GR, nonrotating deformed BHs, instead, show no addition to their gravitational multipole moments, and all of their Love numbers are zero. Here I will discuss different configurations of nonrotating compact and ultracompact objects to bridge the compactness gap between BHs an NSs and calculate their Love number. For the first time we compute the Love number for uniform density ultracompact stars with compactness beyond the Buchdahl limit, and we find that the Love number approaches smoothly to zero as the compactness approaches the Schwarzschild limit. Our results provide insight on the zero tidal deformability limit.
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