Using Gravitational-wave Observations and Quasi-universal Relations to Constrain the Maximum Mass of Neutron Stars
Abstract
Combining the GW observations of merging systems of binary neutron stars and quasi-universal relations, we set constraints on the maximum mass that can be attained by nonrotating stellar models of neutron stars. More specifically, exploiting the recent observation of the GW event GW170817 and drawing from basic arguments on kilonova modeling of GRB 170817A together with the quasi-universal relation between the maximum mass of nonrotating stellar models M_(TOV) and the maximum mass supported through uniform rotation M_(max) = (1.20_(-0.05)^(+0.02)) M_(TOV), we set limits for the maximum mass to be 2.01_(-0.04)^(+0.04) ⩽ M(TOV)/M_⊙ ≾ 2.16_(-0.15)^(+0.17), where the lower limit in this range comes from pulsar observations. Our estimate, which follows a very simple line of arguments and does not rely on the modeling of the electromagnetic signal in terms of numerical simulations, can be further refined as new detections become available. We briefly discuss the impact that our conclusions have on the equation of state of nuclear matter.
Additional Information
© 2018. The American Astronomical Society. It is a pleasure to thank the referee for useful suggestions and Luke Bovard and Enping Zhou for discussions. Support comes in part from "NewCompStar," COST Action MP1304; LOEWE-Program in HIC for FAIR; European Union's Horizon 2020 Research and Innovation Programme (Grant 671698) (call FETHPC-1-2014, project ExaHyPE), the ERC Synergy Grant "BlackHoleCam: Imaging the Event Horizon of Black Holes" (Grant No. 610058).Attached Files
Published - Rezzolla_2018_ApJL_852_L25.pdf
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Additional details
- Eprint ID
- 121236
- Resolver ID
- CaltechAUTHORS:20230501-297563000.61
- MP1304
- European Cooperation in Science and Technology (COST)
- Helmholtz International Center for FAIR
- 671698
- European Research Council (ERC)
- 610058
- European Research Council (ERC)
- Created
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2023-05-04Created from EPrint's datestamp field
- Updated
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2023-05-04Created from EPrint's last_modified field