- 저자J. Abadie et al. (오정근)
-
학술지Astrophys. J. 760
- 등재유형
- 게재일자(2012)
We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that
were detected by satellite-based gamma-ray experiments in 2009-2010, during the sixth LIGO science run and
the second and third Virgo science runs. We perform two distinct searches: a modeled search for coalescences
of either two neutron stars or a neutron star and black hole; and a search for generic, unmodeled gravitational-wave bursts. We find no evidence for gravitational-wave counterparts, either with any individual GRB in this
sample or with the population as a whole. For all GRBs we place lower bounds on the distance to the progenitor,
under the optimistic assumption of a gravitational-wave emission energy of $10^{-2} \text{ }M_\odot\text{ }
c^2$ at 150 Hz, with a
median limit of 17 Mpc. For short hard GRBs we place exclusion distances on binary neutron star and neutron
star-black hole progenitors, using astrophysically motivated priors on the source parameters, with median
values of 16 Mpc and 28 Mpc respectively. These distance limits, while significantly larger than for a search that
is not aided by GRB satellite observations, are not large enough to expect a coincidence with a GRB. However,
projecting these exclusions to the sensitivities of Advanced LIGO and Virgo, which should begin operation in
2015, we find that the detection of gravitational waves associated with GRBs will become quite possible.
We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that
were detected by satellite-based gamma-ray experiments in 2009-2010, during the sixth LIGO science run and
the second and third Virgo science runs. We perform two distinct searches: a modeled search for coalescences
of either two neutron stars or a neutron star and black hole; and a search for generic, unmodeled gravitational-wave bursts. We find no evidence for gravitational-wave counterparts, either with any individual GRB in this
sample or with the population as a whole. For all GRBs we place lower bounds on the distance to the progenitor,
under the optimistic assumption of a gravitational-wave emission energy of $10^{-2} \text{ }M_\odot\text{ }
c^2$ at 150 Hz, with a
median limit of 17 Mpc. For short hard GRBs we place exclusion distances on binary neutron star and neutron
star-black hole progenitors, using astrophysically motivated priors on the source parameters, with median
values of 16 Mpc and 28 Mpc respectively. These distance limits, while significantly larger than for a search that
is not aided by GRB satellite observations, are not large enough to expect a coincidence with a GRB. However,
projecting these exclusions to the sensitivities of Advanced LIGO and Virgo, which should begin operation in
2015, we find that the detection of gravitational waves associated with GRBs will become quite possible.