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  Tidal deformation of dynamical horizons in binary black hole mergers

Prasad, V., Gupta, A., Bose, S., & Krishnan, B. (2022). Tidal deformation of dynamical horizons in binary black hole mergers. Physical Review D, 105: 044019. doi:10.1103/PhysRevD.105.044019.

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 Creators:
Prasad, Vaishak, Author
Gupta, Anshu, Author
Bose, Sukanta, Author
Krishnan, Badri1, Author              
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
 Abstract: An important physical phenomenon that manifests itself during the inspiral of two orbiting compact objects is the tidal deformation of each under the gravitational influence of its companion. In the case of binary neutron star mergers, this tidal deformation and the associated Love numbers have been used to probe properties of dense matter and the nuclear equation of state. Non-spinning black holes on the other hand have a vanishing (field) tidal Love number in General Relativity. This pertains to the deformation of the asymptotic gravitational field. In certain cases, especially in the late stages of the inspiral phase when the black holes get close to each other, the source multipole moments might be more relevant in probing their properties and the No-Hair conjecture; contrastingly, these Love numbers do not vanish. In this paper, we track the source multipole moments in simulations of several binary black hole mergers and calculate these Love numbers. We present evidence that, at least for modest mass ratios, the behavior of the source multipole moments is universal.

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 Dates: 2021-06-042022-01-202022
 Publication Status: Published in print
 Pages: 11 pages, 4 figures
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2106.02595
DOI: 10.1103/PhysRevD.105.044019
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 105 Sequence Number: 044019 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258