GW190521

• Verfasst von: Morton, Sophia [VerfasserIn]
• Verfasst von: Rinaldi, Stefano [VerfasserIn]
• Verfasst von: Torres-Orjuela, Alejandro [VerfasserIn]
• Verfasst von: Derdzinski, Andrea [VerfasserIn]
• Verfasst von: Vaccaro, Maria [VerfasserIn]
• Verfasst von: Del Pozzo, Walter [VerfasserIn]
• Titel: GW190521
• Titelzusatz: a binary black hole merger inside an active galactic nucleus?
• Verf.angabe: Sophia L. Morton, Stefano Rinaldi, Alejandro Torres-Orjuela, Andrea Derdzinski, M. Paola Vaccaro, Walter Del Pozzo
• E-Jahr: 2023
• Jahr: 26 December 2023
• Umfang: 1-11$t11
• Fussnoten: Gesehen am 16.12.2024
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Ridge, NY : American Physical Society, 2016
• Jahr Quelle: 2023
• Band/Heft Quelle: 108(2023), 12, Artikel-ID 123039
• ISSN Quelle: 2470-0029
• DOI: doi:10.1103/PhysRevD.108.123039
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1912410435

Abstract

GW190521, the most massive binary black hole merger confidently detected by the LIGO-Virgo-KAGRA Collaboration, is the first gravitational-wave observation of an intermediate-mass black hole. The signal was followed approximately 34 days later by flare ZTF19abanrhr, detected in AGN J⁢124942.3+344929 by the Zwicky Transient Facility at the 78% spatial contour for GW190521’s sky localization. Using the GWTC-2.1 data release, we find that the association between GW190521 and flare ZTF19abanrhr as its electromagnetic counterpart is preferred over a random coincidence of the two transients with a log Bayes’ factor of 8.6, corresponding to an odds ratio of ∼5400 :1 for equal prior odds and ∼400 :1 assuming an astrophysical prior odds of 1/13. Given the association, the multimessenger signal allows for an estimation of the Hubble constant, finding ????0=10⁢2+27−25 km s−1 Mpc−1 when solely analyzing GW190521 and 79.2+17.6−9.6 km s−1 Mpc−1 assuming prior information from the binary neutron star merger GW170817, both consistent with the existing literature.