Title:	Constraints on cosmic strings from the LIGO-Virgo gravitational-wave detectors
Authors:	Aasi, J. Abadie, J. Abbott, B.P. Iyer, B.R. LIGO Scientific Collaboration and Virgo Collaboration +845 Co authors
Issue Date:	4-Apr-2014
Publisher:	American Physical Society
Citation:	Physical Review Letters, 2014, Vol.112, p131101
Abstract:	Cosmic strings can give rise to a large variety of interesting astrophysical phenomena. Among them, powerful bursts of gravitational waves (GWs) produced by cusps are a promising observational signature. In this Letter we present a search for GWs from cosmic string cusps in data collected by the LIGO and Virgo gravitational wave detectors between 2005 and 2010, with over 625 days of live time. We find no evidence of GW signals from cosmic strings. From this result, we derive new constraints on cosmic string parameters, which complement and improve existing limits from previous searches for a stochastic background of GWs from cosmic microwave background measurements and pulsar timing data. In particular, if the size of loops is given by the gravitational backreaction scale, we place upper limits on the string tension Gμ below 10−8 in some regions of the cosmic string parameter space.
Description:	Open Access
URI:	http://hdl.handle.net/2289/6028
ISSN:	0031-9007 1079-7114(Online)
Alternative Location:	http://arxiv.org/abs/1310.2384 http://dx.doi.org/10.1103/PhysRevLett.112.131101 http://adsabs.harvard.edu/abs/2014PhRvL.112m1101A
Copyright:	2014 American Physical Society
Appears in Collections:	Research Papers (TP)

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