Constraints on Cosmic Strings from the LIGO-Virgo Gravitational-Wave Detectors

Constraints on Cosmic Strings from the LIGO-Virgo Gravitational-Wave Detectors

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 LIG...

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Bibliographic Details
Main Authors: Barnum, Sam, Barsotti, Lisa, Bodiya, Timothy Paul, Donovan, Frederick J., Essick, Reed Clasey, Evans, M., Foley, S., Fritschel, Peter K., Gras, Slawek, Isogai, Tomoki, Katsavounidis, Erotokritos, Kissel, Jeffrey S., Kwee, Patrick, Lee, J., MacInnis, Myron E., Mason, Kenneth R., Matichard, Fabrice, Mavalvala, Nergis, Mittleman, Richard K., Oelker, Eric Glenn, Shoemaker, David H., Vaulin, Ruslan, Vitale, Salvatore, Waldman, S. J., Weiss, Rainer, Wipf, C. C., Zhang, Fan, Zucker, Michael E., Aggarwal, Nancy,Ph. D.Massachusetts Institute of Technology.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2014
Online Access:http://hdl.handle.net/1721.1/88986
https://orcid.org/0000-0002-0026-3877
https://orcid.org/0000-0003-0219-9706
https://orcid.org/0000-0003-2815-7387
https://orcid.org/0000-0001-6550-3045
https://orcid.org/0000-0002-4147-2560
https://orcid.org/0000-0001-8150-7062
https://orcid.org/0000-0002-2544-1596
https://orcid.org/0000-0003-2700-0767
https://orcid.org/0000-0003-1983-3187
https://orcid.org/0000-0001-8196-9267
Description
Summary: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[superscript −8] in some regions of the cosmic string parameter space.

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