Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/124291

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题名:	Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO-Virgo data
作者:	Liu, Guo-qing
关键词:	Cosmic rays & astroparticles;Dark matter;General relativity;Gravitational waves
日期:	2022-08-09
上传时间:	2023-07-25 12:05:15 (UTC+8)
摘要:	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 × 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.
關聯:	Phys. Rev. D 106,　042003
DOI:	10.1103/PhysRevD.106.042003
显示于类别:	[物理學系暨研究所] 期刊論文

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