| Autor: |
Abbott, B.P., Allen, Bruce, Aufmuth, Peter, Bisht, A., Danzmann, Karsten, Denker, T., Heurs, M., Kaufer, S., Krueger, C., Lough, J.D., Lück, Harald, Sawadsky, A., Schütte, D., Steinmeyer, D., Vahlbruch, H., Willke, Benno, Wimmer, M.H., Wittel, H., LIGO Scientific Collaboration, Collaboration, Virgo |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Physical Review D 94 (2016), Nr. 4 |
| Popis: |
We report on a comprehensive all-sky search for periodic gravitational waves in the frequency band 100–1500 Hz and with a frequency time derivative in the range of [−1.18,+1.00]×10−8 Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our galaxy. This search uses the data from the initial LIGO sixth science run and covers a larger parameter space with respect to any past search. A Loosely Coherent detection pipeline was applied to follow up weak outliers in both Gaussian (95% recovery rate) and non-Gaussian (75% recovery rate) bands. No gravitational wave signals were observed, and upper limits were placed on their strength. Our smallest upper limit on worst-case (linearly polarized) strain amplitude h0 is 9.7×10−25 near 169 Hz, while at the high end of our frequency range we achieve a worst-case upper limit of 5.5×10−24. Both cases refer to all sky locations and entire range of frequency derivative values. © 2016 The American Physical Society |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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