논문
Search for gravitational-wave signals associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo
- 저자B.P. Abbott (W. S. Kim; J. J. Oh; S. H. Oh; E. J. Son)
- 학술지The Astrophysical Journal 886(1)
- 등재유형
- 게재일자(2019)
Abstract
We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August. We have ananlyzed 98 gamma-ray bursts using an unmodeled serch method that searches for generic transient gravitational waves and 42 with a modeled search mehod that targets copact-binary mergers as progenitors of short gamma-ray bursts. Both methods clerly detect the previously reported binary merger signal GW170817, with p-values of (modeled) and (unmodeled). We do not find any significant evidence for grvitational-wave signals associated with the other gamma-ray bursts analyzed, and therefore we report lower bounds on the distance to each of these, assunming various source types and signal morphologies. Using our final modeled search results, short gamma-ray burst observations, and assuming binary neutron star progenitors, we place bounds on the rate of short gamma-ray bursts as a function of redshift for . We eatimate 0.07-1.80 jonint detections with Fermi-GBM per year for the 2019-20 LIGO-Virgo observing run and 0.15-3.90 per when current gravitational-wave detectors are operating at their design sensitivities.
Abstract
We present the results of targeted searches for gravitational-wave transients associated with gamma-ray bursts during the second observing run of Advanced LIGO and Advanced Virgo, which took place from 2016 November to 2017 August. We have ananlyzed 98 gamma-ray bursts using an unmodeled serch method that searches for generic transient gravitational waves and 42 with a modeled search mehod that targets copact-binary mergers as progenitors of short gamma-ray bursts. Both methods clerly detect the previously reported binary merger signal GW170817, with p-values of (modeled) and (unmodeled). We do not find any significant evidence for grvitational-wave signals associated with the other gamma-ray bursts analyzed, and therefore we report lower bounds on the distance to each of these, assunming various source types and signal morphologies. Using our final modeled search results, short gamma-ray burst observations, and assuming binary neutron star progenitors, we place bounds on the rate of short gamma-ray bursts as a function of redshift for . We eatimate 0.07-1.80 jonint detections with Fermi-GBM per year for the 2019-20 LIGO-Virgo observing run and 0.15-3.90 per when current gravitational-wave detectors are operating at their design sensitivities.
