Effect of eccentricity on binary neutron star searches in advanced LIGO
- Creators
- Huerta, E. A.
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Brown, Duncan A.
Abstract
Binary neutron stars (BNSs) are the primary source of gravitational waves for the Laser Interferometer Gravitational-Wave Observatory (LIGO) and its international partners Virgo and KAGRA. Current BNS searches target field binaries whose orbits will have circularized by radiation reaction before their gravitational waves enter the advanced LIGO sensitive band at 15 Hz. It has been suggested that a population of BNSs may form by n-body interactions near supermassive black holes or in globular clusters and that these systems may have non-negligible eccentricity in the advanced LIGO band. We show that for BNS systems with total mass of 2.4M_⊙ (6M_⊙), the effect of eccentricity e≲0.02 (0.05) is negligible and a circular search is effectual for these binaries. For eccentricities up to e = 0.4, we investigate the selection bias caused by neglecting eccentricity in BNS searches. If such high eccentricity systems exist, searches that specifically target eccentric binaries will be needed in advanced LIGO and Virgo.
Additional Information
© 2013 American Physical Society. Received 4 January 2013; published 7 June 2013. This work was supported by NSF Grants No. PHY- 0847611 and No. PHY-0854812. D.A.B. and E. A. H. would also like to thank the Research Corporation for Science Advancement and the Cottrell Scholars Program for support. The Monte Carlo simulations described in this paper were performed using the Syracuse University Gravitation and Relativity (SUGAR) cluster, which is supported by NSF Grants No. PHY-1040231, No. PHY-0600953 and No. PHY-1104371. E. A. H. thanks Stefan Ballmer, Alessandra Buonanno, Peter Couvares, Jolien Creighton, Ryan Fisher, Chris Fryer, Ian Harry, Prayush Kumar, Alex Nitz, Bangalore Sathyaprakash, Peter Saulson and Matt West for useful discussions. We thank Ray Frey for carefully reading this manuscript. We also thank the anonymous referee for their constructive comments. Part of this work was carried out at the Kavli Institute for Theoretical Physics at Santa Barbara University, which is supported in part by the National Science Foundation under Grant No. NSF PHY05-51164Attached Files
Published - PhysRevD.87.127501.pdf
Submitted - 1301.1895v2.pdf
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Additional details
- Eprint ID
- 39389
- Resolver ID
- CaltechAUTHORS:20130716-104303800
- PHY-0847611
- NSF
- PHY-0854812
- NSF
- Research Corporation for Science Advancement
- Cottrell Scholars Program
- PHY-1040231
- NSF
- PHY-0600953
- NSF
- PHY05-51164
- NSF
- Created
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2013-07-22Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field