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:
-
[2]
- Univ. of Tennessee, Knoxville, TN (United States); Ohio Univ., Athens, OH (United States); Univ. of California, Berkeley, CA (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- 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. https://doi.org/10.1103/PhysRevD.99.083014
Han, Sophia, and Steiner, Andrew W. Mon .
"Tidal deformability with sharp phase transitions in binary neutron stars". United States. https://doi.org/10.1103/PhysRevD.99.083014. https://www.osti.gov/servlets/purl/1560401.
@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 = {Mon Apr 15 00:00:00 EDT 2019},
month = {Mon Apr 15 00:00:00 EDT 2019}
}
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