What if GW190425 did not produce a black hole promptly?

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  • Giacomo Ricigliano
    Technische Universität Darmstadt, Institut für Kernphysik , Schlossgartenstr. 2, D-64289 Darmstadt , Germany
  • David Radice
    Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802 , USA
  • Mukul Bhattacharya
    Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802 , USA
  • Farrukh J Fattoyev
    Department of Physics and Astronomy , Manhattan College, Riverdale, NY 10471 , USA
  • Albino Perego
    Dipartimento di Fisica, Università di Trento , Via Sommarive 14, I-38123 Trento , Italy
  • Kohta Murase
    Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802 , USA

書誌事項

公開日
2024-02-07
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1093/mnras/stae400
  • 10.48550/arxiv.2309.15195
公開者
Oxford University Press (OUP)

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説明

<jats:title>ABSTRACT</jats:title> <jats:p>It is widely believed that the binary neutron star merger GW190425 produced a black hole promptly upon merger. Motivated by the potential association with the fast radio burst FRB 20190425A, which took place 2.5 h after the merger, we revisit the question of the outcome of GW190425 by means of numerical relativity simulations. We show that current laboratory and astrophysical constraints on the equation of state of dense matter do not rule out the formation of a long-lived remnant. However, the formation of a stable remnant would have produced a bright kilonova, in tension with upper limits by ZTF at the location and time of FRB 20190425A. Moreover, the ejecta would have been optically thick to radio emission for days to months, preventing a putative FRB from propagating out. The predicted dispersion measure is also several orders of magnitude larger than that observed for FRB 20190425A. Our results indicate that FRB 20190425A and GW190425 are not associated. However, we cannot completely rule out the formation of a long-lived remnant, due to the incomplete coverage of the relevant sky regions. More observations of GW190425-like events, including potential upper limit, have the potential to constrain nuclear physics. To this aim, it is important that follow-up observational campaigns of gravitational wave events are informed by the properties of the source, such as their chirp mass, and we urge the LIGO-Virgo-KAGRA collaboration to promptly release them publicly.</jats:p>

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