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  Gravitational-wave luminosity of binary neutron stars mergers

Zappa, F., Bernuzzi, S., Radice, D., Perego, A., & Dietrich, T. (2018). Gravitational-wave luminosity of binary neutron stars mergers. Physical Review Letters, 120(11): 111101. doi:10.1103/PhysRevLett.120.111101.

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1712.04267.pdf (Preprint), 676KB
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 Creators:
Zappa, Francesco, Author
Bernuzzi, Sebastiano, Author
Radice, David, Author
Perego, Albino, Author
Dietrich, Tim1, Author           
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: We study the gravitational-wave peak luminosity and radiated energy of quasicircular neutron star mergers using a large sample of numerical relativity simulations with different binary parameters and input physics. The peak luminosity for all the binaries can be described in terms of the mass ratio and of the leading-order post-Newtonian tidal parameter solely. The mergers resulting in a prompt collapse to black hole have largest peak luminosities. However, the largest amount of energy per unit mass is radiated by mergers that produce a hypermassive neutron star or a massive neutron star remnant. We quantify the gravitational-wave luminosity of binary neutron star merger events, and set upper limits on the radiated energy and the remnant angular momentum from these events. We find that there is an empirical universal relation connecting the total gravitational radiation and the angular momentum of the remnant. Our results constrain the final spin of the remnant black-hole and also indicate that stable neutron star remnant forms with super-Keplerian angular momentum.

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 Dates: 2017-12-122018
 Publication Status: Issued
 Pages: 5 pages, 4 figures
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 Table of Contents: -
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 120 (11) Sequence Number: 111101 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1