Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors

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dc.contributor.author Sengupta, Anand
dc.date.accessioned 2014-08-04T14:10:26Z
dc.date.available 2014-08-04T14:10:26Z
dc.date.issued 2014-06
dc.identifier.citation Sengupta, Anand et al., "Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors", Physical Review D, DOI: 10.1103/PhysRevD.89.122004, vol. 89, no. 12, Jun. 2014. en_US
dc.identifier.issn 1550-7998
dc.identifier.issn 1550-2368
dc.identifier.uri http://dx.doi.org/10.1103/PhysRevD.89.122004
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1368
dc.description.abstract In this paper we report on a search for short-duration gravitational wave bursts in the frequency range 64 Hz–1792 Hz associated with gamma-ray bursts (GRBs), using data from GEO 600 and one of the LIGO or Virgo detectors. We introduce the method of a linear search grid to analyze GRB events with large sky localization uncertainties, for example the localizations provided by the Fermi Gamma-ray Burst Monitor (GBM). Coherent searches for gravitational waves (GWs) can be computationally intensive when the GRB sky position is not well localized, due to the corrections required for the difference in arrival time between detectors. Using a linear search grid we are able to reduce the computational cost of the analysis by a factor of O(10) for GBM events. Furthermore, we demonstrate that our analysis pipeline can improve upon the sky localization of GRBs detected by the GBM, if a high-frequency GW signal is observed in coincidence. We use the method of the linear grid in a search for GWs associated with 129 GRBs observed satellite-based gamma-ray experiments between 2006 and 2011. The GRBs in our sample had not been previously analyzed for GW counterparts. A fraction of our GRB events are analyzed using data from GEO 600 while the detector was using squeezed-light states to improve its sensitivity; this is the first search for GWs using data from a squeezed-light interferometric observatory. We find no evidence for GW signals, either with any individual GRB in this sample or with the population as a whole. For each GRB we place lower bounds on the distance to the progenitor, under an assumption of a fixed GW emission energy of 10−2M⊙c2, with a median exclusion distance of 0.8 Mpc for emission at 500 Hz and 0.3 Mpc at 1 kHz. The reduced computational cost associated with a linear search grid will enable rapid searches for GWs associated with Fermi GBM events once the advanced LIGO and Virgo detectors begin operation. en_US
dc.description.statementofresponsibility by Anand Sengupta et al.
dc.format.extent vol. 89, no. 12
dc.language.iso en en_US
dc.publisher American Physical Society (APS) en_US
dc.subject GEO 600 en_US
dc.subject Gravitational waves en_US
dc.subject LIGO en_US
dc.subject Virgo detectors en_US
dc.title Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors en_US
dc.type Article en_US


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