The Swift short gamma-ray burst rate density: implications for binary neutron star merger rates

被引：100

作者：

Coward, D. M. ^{[1
]}

Howell, E. J. ^{[1
]}

Piran, T. ^{[2
]}

Stratta, G. ^{[3
]}

Branchesi, M. ^{[4
,5
]}

Bromberg, O. ^{[2
]}

Gendre, B. ^{[3
,6
]}

Burman, R. R. ^{[1
]}

Guetta, D. ^{[6
,7
]}

机构：

[1] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia

[2] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[3] ASI Sci Data Ctr, I-00044 Frascati, RM, Italy

[4] Univ Urbino Carlo Bo, DiSBeF, I-61029 Urbino, Italy

[5] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, Italy

[6] INAF, Osservatorio Astron Roma, I-00040 Rome, Italy

[7] ORT Braude, Dept Phys & Opt Engn, Karmiel, Israel

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 425卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

gravitational waves; techniques: miscellaneous; gamma-ray burst: individual; stars: neutron; BLACK-HOLE BINARIES; HOST GALAXY; OPTICAL AFTERGLOW; EXTENDED EMISSION; PROGENITORS; LUMINOSITY; DISCOVERY; MODEL;

D O I：

10.1111/j.1365-2966.2012.21604.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Short gamma-ray bursts (SGRBs) observed by Swift potentially reveal the first insight into cataclysmic compact object mergers. To ultimately acquire a fundamental understanding of these events requires pan-spectral observations and knowledge of their spatial distribution to differentiate between proposed progenitor populations. Up to 2012 April, there are only some 30 per cent of SGRBs with reasonably firm redshifts, and this sample is highly biased by the limited sensitivity of Swift to detect SGRBs. We account for the dominant biases to calculate a realistic SGRB rate density out to z approximate to 0.5 using the Swift sample of peak fluxes, redshifts and those SGRBs with a beaming angle constraint from X-ray/optical observations. We find an SGRB lower rate density of 8(-3)(+5) Gpc(-3) yr(-1) (assuming isotropic emission) and a beaming corrected upper limit of 1100(-470)(+700) Gpc(-3) yr(-1). Assuming a significant fraction of binary neutron star mergers produce SGRBs, we calculate lower and upper detection rate limits of (1-180) yr(-1) by an Advanced LIGO (aLIGO) and Virgo coincidence search. Our detection rate is similar to the lower and realistic rates inferred from extrapolations using Galactic pulsar observations and population synthesis.

引用

页码：2668 / 2673

页数：6

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