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Title: Tidal deformability with sharp phase transitions in binary neutron stars

Abstract

The neutron star tidal deformability is a critical parameter which determines the premerger gravitational-wave signal in a neutron star merger. In this article, we show how neutron star tidal deformabilities behave in the presence of one or two sharp phase transition(s). We characterize how the tidal deformability changes when the properties of these phase transitions are modified in dense matter equations of state. Sharp phase transitions lead to the smallest possible tidal deformabilities and also induce discontinuities in the relation between tidal deformability and gravitational mass. These results are qualitatively unmodified by a modest softening of the phase transition. Lastly, we test two universal relations involving the tidal deformability and show that their accuracy is limited by sharp phase transitions.

Authors:
 [1]; ORCiD logo [2]
  1. Univ. of Tennessee, Knoxville, TN (United States); Ohio Univ., Athens, OH (United States); Univ. of California, Berkeley, CA (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1560401
Alternate Identifier(s):
OSTI ID: 1509772
Grant/Contract Number:  
AC05-00OR22725; TM8-19002X
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 99; Journal Issue: 8; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Han, Sophia, and Steiner, Andrew W. Tidal deformability with sharp phase transitions in binary neutron stars. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.99.083014.
Han, Sophia, & Steiner, Andrew W. Tidal deformability with sharp phase transitions in binary neutron stars. United States. doi:10.1103/PhysRevD.99.083014.
Han, Sophia, and Steiner, Andrew W. Mon . "Tidal deformability with sharp phase transitions in binary neutron stars". United States. doi:10.1103/PhysRevD.99.083014.
@article{osti_1560401,
title = {Tidal deformability with sharp phase transitions in binary neutron stars},
author = {Han, Sophia and Steiner, Andrew W.},
abstractNote = {The neutron star tidal deformability is a critical parameter which determines the premerger gravitational-wave signal in a neutron star merger. In this article, we show how neutron star tidal deformabilities behave in the presence of one or two sharp phase transition(s). We characterize how the tidal deformability changes when the properties of these phase transitions are modified in dense matter equations of state. Sharp phase transitions lead to the smallest possible tidal deformabilities and also induce discontinuities in the relation between tidal deformability and gravitational mass. These results are qualitatively unmodified by a modest softening of the phase transition. Lastly, we test two universal relations involving the tidal deformability and show that their accuracy is limited by sharp phase transitions.},
doi = {10.1103/PhysRevD.99.083014},
journal = {Physical Review D},
number = 8,
volume = 99,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on April 15, 2020
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Cited by: 19 works
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    Works referencing / citing this record:

    Towards understanding astrophysical effects of nuclear symmetry energy
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