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Title: Dark halos around neutron stars and gravitational waves

Abstract

Here, we find that models of MeV-GeV dark matter in which dark matter interacts strongly can be constrained by the observation of gravitational waves from binary neutron star (BNS) mergers. Trace amounts of dark matter, either produced during the supernova or accreted later, can alter the structure of neutron stars (NS) and influence their tidal deformability. We focus on models of dark matter interacting by the exchange of light vector gauge bosons that couple to a conserved dark charge. In these models, dark matter accumulated in neutron stars can extend to large radii. Gravitational waves detected from the first observed BNS merger GW170817 places useful constraints on such not-so compact objects. Dark halos, if present, further predict a greater variability of neutron star tidal deformabilities than expected for ordinary neutron stars.

Authors:
 [1];  [1];  [1]
  1. Univ. of Washington, Seattle, WA (United States)
Publication Date:
Research Org.:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
OSTI Identifier:
1596187
Grant/Contract Number:  
[SC0011637; FG02-00ER41132; PHY-1430152]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
[ Journal Volume: 2019; Journal Issue: 07]; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter theory; gravitational waves theory; neutron stars

Citation Formats

Nelson, Ann E., Reddy, Sanjay, and Zhou, Dake. Dark halos around neutron stars and gravitational waves. United States: N. p., 2019. Web. doi:10.1088/1475-7516/2019/07/012.
Nelson, Ann E., Reddy, Sanjay, & Zhou, Dake. Dark halos around neutron stars and gravitational waves. United States. doi:10.1088/1475-7516/2019/07/012.
Nelson, Ann E., Reddy, Sanjay, and Zhou, Dake. Thu . "Dark halos around neutron stars and gravitational waves". United States. doi:10.1088/1475-7516/2019/07/012.
@article{osti_1596187,
title = {Dark halos around neutron stars and gravitational waves},
author = {Nelson, Ann E. and Reddy, Sanjay and Zhou, Dake},
abstractNote = {Here, we find that models of MeV-GeV dark matter in which dark matter interacts strongly can be constrained by the observation of gravitational waves from binary neutron star (BNS) mergers. Trace amounts of dark matter, either produced during the supernova or accreted later, can alter the structure of neutron stars (NS) and influence their tidal deformability. We focus on models of dark matter interacting by the exchange of light vector gauge bosons that couple to a conserved dark charge. In these models, dark matter accumulated in neutron stars can extend to large radii. Gravitational waves detected from the first observed BNS merger GW170817 places useful constraints on such not-so compact objects. Dark halos, if present, further predict a greater variability of neutron star tidal deformabilities than expected for ordinary neutron stars.},
doi = {10.1088/1475-7516/2019/07/012},
journal = {Journal of Cosmology and Astroparticle Physics},
number = [07],
volume = [2019],
place = {United States},
year = {2019},
month = {7}
}

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