Picture of a black hole

Strathclyde Open Access research that creates ripples...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of research papers by University of Strathclyde researchers, including by Strathclyde physicists involved in observing gravitational waves and black hole mergers as part of the Laser Interferometer Gravitational-Wave Observatory (LIGO) - but also other internationally significant research from the Department of Physics. Discover why Strathclyde's physics research is making ripples...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Search for gravitational waves from binary inspirals in S3 and S4 LIGO data

Abbott, B. and Abbott, R. and Adhikari, R. and Agresti, J. and Ajith, P. and Allen, B. and Amin, R. and Lockerbie, N.A. (2008) Search for gravitational waves from binary inspirals in S3 and S4 LIGO data. Physical Review D: Particles and Fields, 77 (6). ISSN 0556-2821

[img]
Preview
PDF (strathprints006489.pdf)
strathprints006489.pdf

Download (369kB) | Preview

Abstract

We report on a search for gravitational waves from the coalescence of compact binaries during the third and fourth LIGO science runs. The search focused on gravitational waves generated during the inspiral phase of the binary evolution. In our analysis, we considered three categories of compact binary systems, ordered by mass: (i) primordial black hole binaries with masses in the range 0.35M[sun]<m1, m2<1.0M[sun], (ii) binary neutron stars with masses in the range 1.0M[sun]<m1, m2<3.0M[sun], and (iii) binary black holes with masses in the range 3.0M[sun]<m1, m2<mmax with the additional constraint m1+m2<mmax, where mmax was set to 40.0M[sun] and 80.0M[sun] in the third and fourth science runs, respectively. Although the detectors could probe to distances as far as tens of Mpc, no gravitational-wave signals were identified in the 1364 hours of data we analyzed. Assuming a binary population with a Gaussian distribution around 0.75-0.75M[sun], 1.4-1.4M[sun], and 5.0-5.0M[sun], we derived 90%-confidence upper limit rates of 4.9 yr-1L10-1 for primordial black hole binaries, 1.2 yr-1L10-1 for binary neutron stars, and 0.5 yr-1L10-1 for stellar mass binary black holes, where L10 is 1010 times the blue-light luminosity of the Sun.