All-sky search for periodic gravitational waves in the full S5 LIGO data
Name
Abadie-2012-All-sky search for periodic gravitational.pdf
Size
2.18 MB
Format
Adobe PDF
Checksum (MD5)
94b9d63a7907d523adb8d0162206514e
Author(s)
Barsotti, Lisa
Bodiya, Timothy Paul
Corbitt, Thomas R.
Donovan, Frederick J.
Dwyer, Sheila Elizabeth
Evans, Matthew J.
Foley, Stephany
Fritschel, Peter K.
Harry, Gregory
Katsavounidis, Erotokritos
Date Issued
January 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
Abadie, J. et al. “All-sky Search for Periodic Gravitational Waves in the Full S5 LIGO Data.” Physical Review D 85.2 (2012): Web. 11 May 2012. © 2012 American Physical Society
Version
Final published version
Abstract
We report on an all-sky search for periodic gravitational waves in the frequency band 50–800 Hz and with the frequency time derivative in the range of 0 through -6×10[superscript -9] Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. After recent improvements in the search program that yielded a 10× increase in computational efficiency, we have searched in two years of data collected during LIGO’s fifth science run and have obtained the most sensitive all-sky upper limits on gravitational-wave strain to date. Near 150 Hz our upper limit on worst-case linearly polarized strain amplitude h[subscript 0] is 1×10[superscript -24], while at the high end of our frequency range we achieve a worst-case upper limit of 3.8×10[superscript -24] for all polarizations and sky locations. These results constitute a factor of 2 improvement upon previously published data. A new detection pipeline utilizing a loosely coherent algorithm was able to follow up weaker outliers, increasing the volume of space where signals can be detected by a factor of 10, but has not revealed any gravitational-wave signals. The pipeline has been tested for robustness with respect to deviations from the model of an isolated neutron star, such as caused by a low-mass or long-period binary companion.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Department of Physics
LIGO (Observatory : Massachusetts Institute of Technology)
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.022001
