Identifying a First-Order Phase Transition in Neutron-Star Mergers through Gravitational Waves
Creators
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1.
GSI Helmholtz Centre for Heavy Ion Research
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2.
Heidelberg Institute for Theoretical Studies
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3.
University of Wrocław
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4.
Moscow Engineering Physics Institute
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5.
Joint Institute for Nuclear Research
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6.
Canadian Institute for Theoretical Astrophysics
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7.
Georgia Institute of Technology
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8.
Laboratory Universe and Theories
Abstract
We identify an observable imprint of a first-order hadron-quark phase transition at supranuclear densities on the gravitational-wave (GW) emission of neutron-star mergers. Specifically, we show that the dominant postmerger GW frequency f_(peak) may exhibit a significant deviation from an empirical relation between f_(peak) and the tidal deformability if a strong first-order phase transition leads to the formation of a gravitationally stable extended quark matter core in the postmerger remnant. A comparison of the GW signatures from a large, representative sample of microphysical, purely hadronic equations of state indicates that this imprint is only observed in those systems which undergo a strong first-order phase transition. Such a shift of the dominant postmerger GW frequency can be revealed by future GW observations, which would provide evidence for the existence of a strong first-order phase transition in the interior of neutron-stars.
Additional Information
© 2019 American Physical Society. Received 4 September 2018; revised manuscript received 31 December 2018; published 12 February 2019. A. B. acknowledges support by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 759253 and the Klaus-Tschira Foundation. N.-U. F. B. and T. F. acknowledge support from the Polish National Science Center (NCN) under Grant No. UMO-2016/23/B/ST2/00720. D. B. B. acknowledges support through the Russian Science Foundation under Project No. 17-12-01427 and the MEPhI Academic Excellence Project under Contract No. 02.a03.21.0005. We acknowledge stimulating discussions during the EMMI Rapid Reaction Task Force: The physics of neutron-star mergers at GSI/FAIR and the support of networking activities by the COST Actions CA15213 "THOR," CA16117 "ChETEC," and CA16214 "PHAROS."Attached Files
Published - PhysRevLett.122.061102.pdf
Accepted Version - 1809.01116.pdf
Supplemental Material - supp.pdf
Files
1809.01116.pdf
Additional details
Identifiers
- Eprint ID
- 104734
- Resolver ID
- CaltechAUTHORS:20200804-132021387
Related works
- Describes
- https://arxiv.org/abs/1809.01116 (URL)
Funding
- European Research Council (ERC)
- 759253
- Klaus-Tschira Foundation
- National Science Centre (Poland)
- UMO-2016/23/B/ST2/00720
- Russian Science Foundation
- 17-12-01427
- National Research Nuclear University
- 02.a03.21.0005
- European Cooperation in Science and Technology (COST)
- CA15213
- European Cooperation in Science and Technology (COST)
- CA16117
- European Cooperation in Science and Technology (COST)
- CA16214
Dates
- Created
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2020-08-05Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field