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Core collapse in massive scalar-tensor gravity

Rosca-Mead, Roxana and Sperhake, Ulrich and Moore, Christopher J. and Agathos, Michalis and Gerosa, Davide and Ott, Christian D. (2020) Core collapse in massive scalar-tensor gravity. Physical Review D, 102 (4). Art. No. 044010. ISSN 2470-0010. doi:10.1103/physrevd.102.044010.

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This paper provides an extended exploration of the inverse-chirp gravitational-wave signals from stellar collapse in massive scalar-tensor gravity reported in [Phys. Rev. Lett. 119, 201103]. We systematically explore the parameter space that characterizes the progenitor stars, the equation of state, and the scalar-tensor theory of the core collapse events. We identify a remarkably simple and straightforward classification scheme of the resulting collapse events. For any given set of parameters, the collapse leads to one of three end states: a weakly scalarized neutron star, a strongly scalarized neutron star, or a black hole, possibly formed in multiple stages. The latter two end states can lead to strong gravitational-wave signals that may be detectable in present continuous-wave searches with ground-based detectors. We identify a very sharp boundary in the parameter space that separates events with strong gravitational-wave emission from those with negligible radiation.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Rosca-Mead, Roxana0000-0001-5666-1033
Sperhake, Ulrich0000-0002-3134-7088
Moore, Christopher J.0000-0002-2527-0213
Agathos, Michalis0000-0002-9072-1121
Gerosa, Davide0000-0002-0933-3579
Ott, Christian D.0000-0003-4993-2055
Additional Information:© 2020 American Physical Society. (Received 19 May 2020; accepted 1 July 2020; published 6 August 2020) We made use of presupernova models by S. Woosley and A. Heger available at We thank Max Isi for helpful comments through the internal LIGO-Virgo review. U.S. is supported by the European Union’s H2020 ERC Consolidator Grant “Matter and strong-field gravity: New frontiers in Einstein’s theory” Grant No. MaGRaTh-646597 and the STFC Consolidator Grant No. ST/P000673/1. M. A. is supported by the Kavli Foundation. D. G. is supported by Leverhulme Trust Grant No. RPG-2019-350. This work was supported by the GWverse COST Action Grant No. CA16104, “Black holes, gravitational waves and fundamental physics.” Computational work was performed on the SDSC Comet and TACC Stampede2 clusters through NSF-XSEDE Grant No. PHY-090003; the Cambridge CSD3 system through STFC capital Grants No. ST/P002307/1 and No. ST/R002452/1, and STFC operations Grant No. ST/R00689X/1; the University of Birmingham BlueBEAR cluster; the Athena cluster at HPC Midlands+ funded by EPSRC Grant No. EP/P020232/1; and the Maryland Advanced Research Computing Center (MARCC).
Funding AgencyGrant Number
European Research Council (ERC)MaGRaTh-646597
Science and Technology Facilities Council (STFC)ST/R00689X/1
Kavli FoundationUNSPECIFIED
Leverhulme TrustRPG-2019-350
European Cooperation in Science and Technology (COST)CA16104
Science and Technology Facilities Council (STFC)ST/P002307/1
Science and Technology Facilities Council (STFC)ST/R002452/1
Science and Technology Facilities Council (STFC)ST/R00689X/1
Engineering and Physical Sciences Research Council (EPSRC)EP/P020232/1
Issue or Number:4
Record Number:CaltechAUTHORS:20200807-090347626
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104811
Deposited By: George Porter
Deposited On:10 Aug 2020 15:48
Last Modified:16 Nov 2021 18:35

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