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SEARCHES FOR CONTINUOUS GRAVITATIONAL WAVES FROM NINE YOUNG SUPERNOVA REMNANTSстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Aasi J., Braginsky V.B., Bilenko I.A., Gorodetsky M.L., Khalili F.Y., Prokhorov L.G., Mitrofanov V.P., Strigin S., Vyatchanin S.P., others;
- Журнал: Astrophysical Journal
- Том: 813
- Номер: 1
- Год издания: 2015
- Издательство: University of Chicago Press
- Местоположение издательства: United States
- DOI: 10.1088/0004-637x/813/1/39
- Аннотация: We describe directed searches for continuous gravitational waves (GWs) in data from the sixth Laser Interferometer Gravitational-wave Observatory (LIGO) science data run. The targets were nine young supernova remnants not associated with pulsars; eight of the remnants are associated with non-pulsing suspected neutron stars. One target's parameters are uncertain enough to warrant two searches, for a total of 10. Each search covered a broad band of frequencies and first and second frequency derivatives for a fixed sky direction. The searches coherently integrated data from the two LIGO interferometers over time spans from 5.3–25.3 days using the matched-filtering ${\mathcal{F}}$-statistic. We found no evidence of GW signals. We set 95% confidence upper limits as strong (low) as 4 × 10−25 on intrinsic strain, 2 × 10−7 on fiducial ellipticity, and 4 × 10−5 on r-mode amplitude. These beat the indirect limits from energy conservation and are within the range of theoretical predictions for neutron-star ellipticities and r-mode amplitudes.
- Добавил в систему: Стрыгин Сергей Евгеньевич