Abstract
We present the results of a directed search for continuous gravitational waves from unknown, isolated neutron stars in the Galactic center region, performed on two years of data from LIGO's fifth science run from two LIGO detectors. The search uses a semicoherent approach, analyzing coherently 630 segments, each spanning 11.5 hours, and then incoherently combining the results of the single segments. It covers gravitational wave frequencies in a range from 78 to 496 Hz and a frequency-dependent range of first-order spindown values down to -7.86 x 10-8 Hz/s at the highest frequency. No gravitational waves were detected. The 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic center are ∼3.35 x 10-25 for frequencies near 150 Hz. These upper limits are the most constraining to date for a large-parameter-space search for continuous gravitational wave signals.
Recommended Citation
J. Aasi et al., "Directed Search for Continuous Gravitational Waves from the Galactic Center," Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 88, no. 10, American Physical Society (APS), Nov 2013.
The definitive version is available at https://doi.org/10.1103/PhysRevD.88.102002
Department(s)
Physics
International Standard Serial Number (ISSN)
1550-7998
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2013 American Physical Society (APS), All rights reserved.
Publication Date
01 Nov 2013
