All-sky Search for Periodic Gravitational Waves in the Full S5 LIGO Data

Document #:

LIGO-P1100029-v36

Document type:

P - Publications

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 x 10^-9 Hz/s. After recent improvements in the search program that yielded a 10x 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 h0 is 1 x 10^-24, while at the high end of our frequency range we achieve a worst-case upper limit of 3.8 x 10^-24 for all polarizations and sky locations. These results constitute a factor of two improvement upon previously published data. New detection pipeline utilizing loosely coherent algorithm was able to follow up weaker outliers increasing detection volume by a factor of 10, but have not revealed any gravitational wave signals.

Files in Document:

• FullS5SemiCoherent.pdf (file is not accessible)

Other Files:

• Data README (README.data, file is not accessible)
• Upper limit file (upper_limits.csv, file is not accessible)

Topics:

• Continuous Wave
• Data analysis software

Author Groups:

• LVC