DOUBLE COMPACT OBJECTS. III. GRAVITATIONAL-WAVE DETECTION RATES

被引:360
作者
Dominik, Michal [1 ]
Berti, Emanuele [2 ]
O'Shaughnessy, Richard [3 ]
Mandel, Ilya [4 ]
Belczynski, Krzysztof [1 ,5 ]
Fryer, Christopher [6 ]
Holz, Daniel E. [7 ,8 ]
Bulik, Tomasz [1 ]
Pannarale, Francesco [9 ]
机构
[1] Univ Warsaw, Astron Observ, PL-00478 Warsaw, Poland
[2] Univ Mississippi, Dept Phys & Astron, University, MS 38677 USA
[3] Univ Wisconsin, Ctr Gravitat Cosmol & Astrophys, Milwaukee, WI 53201 USA
[4] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[5] Univ Texas Brownsville, Ctr Gravitat Wave Astron, Brownsville, TX 78520 USA
[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[7] Univ Chicago, Enrico Fermi Inst, Dept Phys, Chicago, IL 60637 USA
[8] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA
[9] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales
基金
美国国家科学基金会;
关键词
binaries: close; gravitational waves; stars: black holes; stars: neutron; MASS BLACK-HOLES; GAMMA-RAY BURSTS; NEUTRON-STAR BINARIES; ATMOSPHERIC STRUCTURE; RELATIVISTIC GRAVITY; GLOBULAR-CLUSTERS; COMMON ENVELOPE; EVOLUTION; MERGERS; METALLICITY;
D O I
10.1088/0004-637X/806/2/263
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The unprecedented range of second-generation gravitational-wave (GW) observatories calls for refining the predictions of potential sources and detection rates. The coalescence of double compact objects (DCOs)-i.e., neutron star-neutron star (NS-NS), black hole-neutron star (BH-NS), and black hole-black hole (BH-BH) binary systems-is the most promising source of GWs for these detectors. We compute detection rates of coalescing DCOs in second-generation GW detectors using the latest models for their cosmological evolution, and implementing inspiral-merger-ringdown gravitational waveform models in our signal-to-noise ratio calculations. We find that (1) the inclusion of the merger/ringdown portion of the signal does not significantly affect rates for NS-NS and BH-NS systems, but it boosts rates by a factor of similar to 1.5 for BH-BH systems; (2) in almost all of our models BH-BH systems yield by far the largest rates, followed by NS-NS and BH-NS systems, respectively; and (3) a majority of the detectable BH-BH systems were formed in the early universe in low-metallicity environments. We make predictions for the distributions of detected binaries and discuss what the first GW detections will teach us about the astrophysics underlying binary formation and evolution.
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页数:18
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