Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data
(2022) Physical review D — Vol. 106 (2022)
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- Abstract
- We present a directed search for continuous gravitational wave (CW) signals emitted by spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling evidence for the presence of a numerous population of neutron stars has been reported in the literature, turning this region into a very interesting place to look for CWs. In this search, data from the full O3 LIGO-Virgo run in the detector frequency band [10, 2000] Hz have been used. No significant detection was found and 95% confidence level upper limits on the signal strain amplitude were computed, over the full search band, with the deepest limit of about $7.6 \times 10^{-26}$ at ≃142 Hz. These results are significantly more constraining than those reported in previous searches. We use these limits to put constraints on the fiducial neutron star ellipticity and r-mode amplitude. These limits can be also translated into constraints in the black hole mass–boson mass plane for a hypothetical population of boson clouds around spinning black holes located in the GC.
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., J. S., Tanasijczuk, A. J., VIRGO, LIGO Scientific, KAGRA, & et al. (2022). Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data. Physical review D, 106. https://doi.org/10.1103/PhysRevD.106.042003 (Original work published 2022)