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Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov modelстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2020 г.
- Авторы: Bilenko I.A., Mitrofanov V.P., Strigin S., Vyatchanin S.P., LIGO Scientific Collaboration
- Журнал: Physical Review D
- Том: 100
- Год издания: 2019
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 122002
- DOI: 10.1103/PhysRevD.100.122002
- Аннотация: We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J -statistic, and by analyzing data from Advanced LIGO’s second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h 95 % 0 = 3.47 × 10 − 25 when marginalizing over source inclination angle. This is the most sensitive search for Scorpius X-1, to date, that is specifically designed to be robust in the presence of spin wandering.
- Добавил в систему: Стрыгин Сергей Евгеньевич