0567226 - FZÚ 2023 RIV GB eng J - Journal Article
Abbott, R. - Abe, H. - Acernese, F. - Oliveri, Roberto … Total 1692 authors
Model-based Cross-correlation search for gravitational waves from the Low-mass X-Ray binary Scorpius X-1 in LIGO O3 Data.
Astrophysical Journal Letters. Roč. 941, č. 2 (2022), č. článku L30. ISSN 2041-8205. E-ISSN 2041-8213
Institutional support: RVO:68378271
Keywords : LIGO * sensitivity * conservation law * accretion * coherence * VIRGO
OECD category: Particles and field physics
Impact factor: 7.9, year: 2022 ; AIS: 3.088, rok: 2022
Method of publishing: Open access
DOI: https://doi.org/10.3847/2041-8213/aca1b0

We present the results of a model-based search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO detector data from the third observing run of Advanced LIGO and Advanced Virgo. This is a semicoherent search that uses details of the signal model to coherently combine data separated by less than a specified coherence time, which can be adjusted to balance sensitivity with computing cost. The search covered a range of gravitational-wave frequencies from 25 to 1600 Hz, as well as ranges in orbital speed, frequency, and phase determined from observational constraints. No significant detection candidates were found, and upper limits were set as a function of frequency. The most stringent limits, between 100 and 200 Hz, correspond to an amplitude h 00​ of about 10−25−25 when marginalized isotropically over the unknown inclination angle of the neutron star’s rotation axis, or less than 4 × 10−26−26 assuming the optimal orientation.
Permanent Link: https://hdl.handle.net/11104/0339344