A directed search for gravitational waves from Scorpius X-1 with initial LIGO

Show simple item record

dc.contributor.author Sengupta, Anand
dc.date.accessioned 2014-12-18T09:27:41Z
dc.date.available 2014-12-18T09:27:41Z
dc.date.issued 2014-12
dc.identifier.citation Sengupta, Anand et al., “A directed search for gravitational waves from Scorpius X-1 with initial LIGO”, arXiv, Cornell University Library, DOI: arXiv:1412.0605, Dec 2014. en_US
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/1501
dc.identifier.uri http://arxiv.org/abs/1412.0605
dc.description.abstract We present results of a search for continuously-emitted gravitational radiation, directed at the brightest low-mass X-ray binary, Scorpius X-1. Our semi-coherent analysis covers 10 days of LIGO S5 data ranging from 50-550 Hz, and performs an incoherent sum of coherent F-statistic power distributed amongst frequency-modulated orbital sidebands. All candidates not removed at the veto stage were found to be consistent with noise at a 1% false alarm rate. We present Bayesian 95% confidence upper limits on gravitational-wave strain amplitude using two different prior distributions: a standard one, with no a priori assumptions about the orientation of Scorpius X-1; and an angle-restricted one, using a prior derived from electromagnetic observations. Median strain upper limits of 1.3e-24 and 8e-25 are reported at 150 Hz for the standard and angle-restricted searches respectively. This proof of principle analysis was limited to a short observation time by unknown effects of accretion on the intrinsic spin frequency of the neutron star, but improves upon previous upper limits by factors of ~1.4 for the standard, and 2.3 for the angle-restricted search at the sensitive region of the detector. en_US
dc.description.statementofresponsibility by Anand Sengupta et al.
dc.language.iso en en_US
dc.publisher Cornell University Library en_US
dc.subject General Relativity en_US
dc.subject High Energy Astrophysical Phenomena en_US
dc.subject Quantum Cosmology en_US
dc.title A directed search for gravitational waves from Scorpius X-1 with initial LIGO en_US
dc.type Article en_US


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Digital Repository


Browse

My Account