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Gravitational Waves from Merging Binary Neutron-Star Systems

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Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 457))

Abstract

The merger of binary neutron-star systems is among the scientifically richest events in the universe: it involves extremes of matter and gravity, copious emission of gravitational waves, complex microphysics, and electromagnetic processes that can lead to astrophysical signatures observable at the largest redshifts. We review here the recent progress in understanding the gravitational-wave signal emitted in this process, focussing in particular on its properties during the inspiral and then after the merger.

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Notes

  1. 1.

    Much of the material presented in the second part relative to the post-merger dynamics has been presented elsewhere either in the form of original journal articles, as a Chapter in a textbook (Rezzolla and Zanotti 2013), or as a part of a Review of Progress in Physics (Baiotti and Rezzolla 2017).

  2. 2.

    An isolated nonrotating neutron star is the solution of the Tolman-Oppenheimer-Volkoff (TOV) equation (Tolman 1939; Oppenheimer and Volkoff 1939) and so it is often called a “TOV” star.

  3. 3.

    The m = 1 mode had been studied previously together with the other modes, but it had never been found to become dominating (see, e.g., Dietrich et al. 2015a).

  4. 4.

    The APR EOS, and many of the proposed EOSs, were later found to violate the light-speed constraint at very high densities and phenomenological constraints (Taranto et al. 2013), but no strong conclusions can be made to rule out such EOSs on this basis because the constraints themselves are affected by errors.

  5. 5.

    In previous works by this group, described above, a different code with a uniform grid had been used.

  6. 6.

    In this Section we will intentionally omit references to avoid cluttering the text; all the relevant references can be found in the various Sections covering the topics discussed here.

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Acknowledgements

It is a pleasure to thank Kentaro Takami and the relativistic-astrophysics group in Frankfurt for their help and input in preparing this Chapter.

Partial support has come from “NewCompStar”, COST Action MP1304, from the LOEWE-Program in HIC for FAIR, the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No. 671698 (call FETHPC-1–2014, project ExaHyPE), from the ERC Synergy Grant “BlackHoleCam - Imaging the Event Horizon of Black Holes” (Grant 610058), from JSPS Grant-in-Aid for Scientific Research(C) No. 18K036220, from the International Centre for Theoretical Sciences Code: ICTS/Prog-GWS/2017/07, and from the Excellence Initiative at Radboud University Nijmegen.

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Correspondence to Luciano Rezzolla .

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Hinderer, T., Rezzolla, L., Baiotti, L. (2018). Gravitational Waves from Merging Binary Neutron-Star Systems. In: Rezzolla, L., Pizzochero, P., Jones, D., Rea, N., Vidaña, I. (eds) The Physics and Astrophysics of Neutron Stars. Astrophysics and Space Science Library, vol 457. Springer, Cham. https://doi.org/10.1007/978-3-319-97616-7_10

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