Results are presented from a semicoherent search for continuous gravitational waves from the brightest low-mass X-ray binary, Scorpius X-1, using data collected during the first Advanced LIGO observing run. The search combines a frequency domain matched filter (Bessel-weighted F-statistic) with a hidden Markov model to track wandering of the neutron star spin frequency. No evidence of gravitational waves is found in the frequency range 60–650 Hz. Frequentist 95% confidence strain upper limits, h95% 0 ¼ 4.0 × 10−25, 8.3 × 10−25, and 3.0 × 10−25 for electromagnetically restricted source orientation, unknown polarization, and circular polarization, respectively, are reported at 106 Hz. They are ≤ 10 times higher than the theoretical torque-balance limit at 106 Hz.

Search for gravitational waves from scorpius X-1 in the first advanced LIGO observing run with a hidden Markov model / Abbott, B.P., Abbott, R., Abbott, T.D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Afrough, M., Agarwal, B., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 95:12(2017). [10.1103/PhysRevD.95.122003]

Search for gravitational waves from scorpius X-1 in the first advanced LIGO observing run with a hidden Markov model

Mangano V.;
2017-01-01

Abstract

Results are presented from a semicoherent search for continuous gravitational waves from the brightest low-mass X-ray binary, Scorpius X-1, using data collected during the first Advanced LIGO observing run. The search combines a frequency domain matched filter (Bessel-weighted F-statistic) with a hidden Markov model to track wandering of the neutron star spin frequency. No evidence of gravitational waves is found in the frequency range 60–650 Hz. Frequentist 95% confidence strain upper limits, h95% 0 ¼ 4.0 × 10−25, 8.3 × 10−25, and 3.0 × 10−25 for electromagnetically restricted source orientation, unknown polarization, and circular polarization, respectively, are reported at 106 Hz. They are ≤ 10 times higher than the theoretical torque-balance limit at 106 Hz.
2017
Search for gravitational waves from scorpius X-1 in the first advanced LIGO observing run with a hidden Markov model / Abbott, B.P., Abbott, R., Abbott, T.D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R.X., Adya, V.B., Affeldt, C., Afrough, M., Agarwal, B., Agatsuma, K., Aggarwal, N., Aguiar, O.D., Aiello, L., Ain, A., Ajith, P., Allen, B., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 95:12(2017). [10.1103/PhysRevD.95.122003]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/353719
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