E-resources
-
Adhikari, R. X.; Avendano, V.; Badaracco, F.; Ballmer, S. W.; Balsamo, A.; Banagiri, S.; Bartos, I.; Bernuzzi, S.; Boer, M.; Boschi, V.; Branchesi, M.; Briant, T.; Bruno, G.; Carney, M. F.; Cavalier, F.; Cerdá-Durán, P.; Cesarini, E.; Ciani, G.; Clark, J. A.; Cohen, D. E.; Cumming, A.; Davis, D.; DeBra, D.; Di Fiore, L.; Dooley, K. L.; Dwyer, S. E.; Essick, R. C.; Fair, H.; Farinon, S.; Farr, B.; Feng, F.; Gabbard, H. A.; Giacoppo, L.; Godwin, P.; Grace, B.; Greco, G.; Haney, M.; Hanke, M. M.; Hartwig, D.; Hasskew, R. K.; Heinzel, J.; Heitmann, H.; Heurs, M.; Hollows, I. J.; Holt, K.; Hoy, C. G.; Jani, K.; Jariwala, D.; Karki, S.; Kasprzack, M.; Kastaun, W.; Kim, C.; Koper, N.; Kwang, S.; Lee, J.; Lehmann, J.; Linker, S. D.; Lough, J. D.; Man, N.; Márka, Z.; Maynard, E.; Miller, A. L.; Mitselmakher, G.; Muciaccia, F.; Nadji, S. L.; O’Dell, J.; Ogin, G. H.; Ossokine, S.; Pechsiri, T. C.; Pele, A.; Piergiovanni, F.; Placidi, E.; Prestegard, T.; Rajan, C.; Rajbhandari, B.; Ricci, F.; Ricker, P. M.; Romano, R.; Rose, D.; Sanchez, L. E.; Sanders, J. R.; Schwartz, E.; Sharifi, S.; Swinkels, B. L.; Tacca, M.; Tapia San Martin, E. N.; Thondapu, S. R.; Vedovato, G.; Villa-Ortega, V.; Walet, R. C.; Wang, S.; Warner, J.; Wei, L.; Weinert, M.; Wellmann, F.; Willke, B.; Wipf, C. C.; Yang, L.; Zhang, J.; Zhao, G.
Astrophysical journal. Letters, 05/2021, Volume: 913, Issue: 1Journal Article, Web Resource
We report on the population of 47 compact binary mergers detected with a false-alarm rate of <1yr^(−1) in the second LIGO–Virgo Gravitational-Wave Transient Catalog. We observe several characteristics of the merging binary black hole (BBH) population not discernible until now. First, the primary mass spectrum contains structure beyond a power law with a sharp high-mass cutoff; it is more consistent with a broken power law with a break at 39.7^(+20.3)(-9.1)M or a power law with a Gaussian feature peaking at 33.1^(+4.0)(-5.6)M (90% credible interval). While the primary mass distribution must extend to ~65M or beyond, only 2.9^(+3.5)(-1.7)M% of systems have primary masses greater than 45M. Second, we find that a fraction of BBH systems have component spins misaligned with the orbital angular momentum, giving rise to precession of the orbital plane. Moreover, 12% to 44% of BBH systems have spins tilted by more than 90°, giving rise to a negative effective inspiral spin parameter, χeff. Under the assumption that such systems can only be formed by dynamical interactions, we infer that between 25% and 93% of BBHs with nonvanishing |χeff| > 0.01 are dynamically assembled. Third, we estimate merger rates, finding RBBH = 23.9^(+14.3)(-8.6) Gpc^(-3) yr^(-1) for BBHs and RBNS = 320^(+490)(-240) Gpc^(-3) yr^(-1) for binary neutron stars. We find that the BBH rate likely increases with redshift (85% credibility) but not faster than the star formation rate (86% credibility). Additionally, we examine recent exceptional events in the context of our population models, finding that the asymmetric masses of GW190412 and the high component masses of GW190521 are consistent with our models, but the low secondary mass of GW190814 makes it an outlier.
Author
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.