R. Abbott

Author ORCID Identifier

Shcheblanov, Nikita: 0000-0001-8696-2435
Ferrante, Isidoro: 0000-0002-0083-7228
Nelemans, Gijs: 0000-0002-0752-2974
Helmling-Cornell, Adrian: 0000-0002-7709-8638
Chiadini, Francesco: 0000-0002-9339-8622
Ando, Masaki: 0000-0002-8865-9998
Christensen, Nelson: 0000-0002-6870-4202
Pascucci, Daniela: 0000-0003-1907-0175
Nguyen, Lan Quynh: 0000-0002-1828-3702
Mow-Lowry, Conor M: 0000-0002-0351-4555
Mangano, Valentina: 0000-0001-7902-8505
Boschi, Valerio: 0000-0001-8665-2293
Perries, Stephane: 0000-0003-2213-3579
Kapadia, Shasvath: 0000-0001-5318-1253
Enomoto, Yutaro: 0000-0001-6426-7079
Sorrentino, Nunziato: 0000-0002-1855-5966
Di Renzo, Francesco: 0000-0002-5447-3810
Razzano, Massimiliano: 0000-0003-4825-1629
Arun, K G: 0000-0002-6960-8538
Nishizawa, Atsushi: 0000-0003-3562-0990
Sordini, Viola: 0000-0003-0885-824X
Shao, Lijing: 0000-0002-1334-8853
Thrane, Eric: 0000-0002-4418-3895
Asali, Yasmeen: 0000-0002-8320-2198
Parisi, Alessandro: 0000-0003-0251-8914
Bazzan, Marco: 0000-0002-1451-1368
Charlton, Philip: 0000-0002-4263-2706
Errico, Luciano: 0000-0003-2112-0653
Carapella, Giovanni: 0000-0002-0095-1434
Hollows, Ian: 0000-0002-3404-6459
Bejger, Michal: 0000-0002-4991-8213
Utina, Andrei: 0000-0003-2975-9208
Strang, Lucy: 0000-0001-7834-9235
Singh, Neha: 0000-0002-1135-3456
Zweizig, John: 0000-0002-1521-3397
Allocca, Annalisa: 0000-0002-5288-1351
Prodi, Giovanni Andrea: 0000-0001-5256-915X
Poggiani, Rosa: 0000-0002-9968-2464
Stratta, Maria Giuliana: 0000-0003-1055-7980
Nakano, Hiroyuki: 0000-0001-7665-0796
Favata, Marc: 0000-0001-8270-9512
Berry, Christopher: 0000-0003-3870-7215
Koekoek, Gideon: 0000-0002-7750-1925
Itoh, Yousuke: 0000-0003-2694-8935
Torres Forne, Alejandro: 0000-0001-8709-5118
Steer, Daniele: 0000-0002-8781-1273
Shinkai, Hisa-Aki: 0000-0003-1082-2844
Kumar, Prayush: 0000-0001-5523-4603
Park, June Gyu: 0000-0002-7510-0079
Edelman, Bruce: 0000-0001-7648-1689
Zimmerman, Aaron: 0000-0002-7453-6372
Schwartz, Eyal: 0000-0001-8922-7794
Sanchis-Gual, Nicolas: 0000-0001-5375-7494
Phukon, Khun Sang: 0000-0003-1561-0760
Kakizaki, Mitsuru: 0000-0003-1430-3339
Kuroyanagi, Sachiko: 0000-0001-6538-1447
Buscicchio, Riccardo: 0000-0002-7387-6754
Piccinni, Ornella Juliana: 0000-0001-5478-3950
Bassiri, Riccardo: 0000-0001-8171-6833
Kovalam, Manoj: 0000-0001-8143-9696

Document Type


Publication Date



Intermediate-mass black holes (IMBHs) span the approximate mass range 100-10(5) M-circle dot, between black holes (BHs) that formed by stellar collapse and the supermassive BHs at the centers of galaxies. Mergers of IMBH binaries are the most energetic gravitational-wave sources accessible by the terrestrial detector network. Searches of the first two observing runs of Advanced LIGO and Advanced Virgo did not yield any significant IMBH binary signals. In the third observing run (O3), the increased network sensitivity enabled the detection of GW190521, a signal consistent with a binary merger of mass similar to 150  M-circle dot providing direct evidence of IMBH formation. Here, we report on a dedicated search of O3 data for further IMBH binary mergers, combining both modeled (matched filter) and model-independent search methods. We find some marginal candidates, but none are sufficiently significant to indicate detection of further IMBH mergers. We quantify the sensitivity of the individual search methods and of the combined search using a suite of IMBH binary signals obtained via numerical relativity, including the effects of spins misaligned with the binary orbital axis, and present the resulting upper limits on astrophysical merger rates. Our most stringent limit is for equal mass and aligned spin BH binary of total mass 200  M-circle dot and effective aligned spin 0.8 at 0.056 Gpc(-3) yr(-1) (90% confidence), a factor of 3.5 more constraining than previous LIGO-Virgo limits. We also update the estimated rate of mergers similar to GW190521 to 0.08 Gpc(-3) yr(-1).

Publication Source (Journal or Book title)

Astronomy & Astrophysics