Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

(LIGO Scientific Collaboration and Virgo Collaboration)

doi:10.1103/PhysRevD.100.122002

Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

(LIGO Scientific Collaboration and Virgo Collaboration)

Applied Mathematics and Statistics

California Institute of Technology
Louisiana State University
Inter-University Centre for Astronomy and Astrophysics India
University of Salerno
National Institute for Nuclear Physics
Monash University
National Science Foundation
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Leibniz University Hannover
University of Cambridge
University of Birmingham
Massachusetts Institute of Technology
Instituto Nacional de Pesquisas Espaciais
Gran Sasso Science Institute
Tata Institute of Fundamental Research
University of Illinois at Urbana-Champaign
University of Pisa
University of Valencia
Australian National University
Institut de Physique des 2 Infinis de Lyon
University of Wisconsin-Milwaukee
University of Strathclyde
IN2P3/CNRS
California State University Fullerton
Université Paris Cité
European Gravitational Observatory
University of Rome Tor Vergata
Université Grenoble Alpes
Embry-Riddle Aeronautical University
Montclair State University
National Institute for Subatomic Physics
Korea Institute of Science and Technology Information
West Virginia University

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

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 h095%=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.

Original language	English
Article number	122002
Journal	Physical Review D
Volume	100
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.100.122002
State	Published - Dec 4 2019

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10.1103/PhysRevD.100.122002

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@article{15c66ae365ab42dfb870d731ec35f097,

title = "Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model",

abstract = "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 h095\%=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.",

author = "\{(LIGO Scientific Collaboration and Virgo Collaboration)\} and Abbott, \{B. P.\} and R. Abbott and Abbott, \{T. D.\} and S. Abraham and F. Acernese and K. Ackley and C. Adams and Adhikari, \{R. X.\} and Adya, \{V. B.\} and C. Affeldt and M. Agathos and K. Agatsuma and N. Aggarwal and Aguiar, \{O. D.\} and L. Aiello and A. Ain and P. Ajith and G. Allen and A. Allocca and Aloy, \{M. A.\} and Altin, \{P. A.\} and A. Amato and A. Ananyeva and Anderson, \{S. B.\} and Anderson, \{W. G.\} and Angelova, \{S. V.\} and S. Antier and S. Appert and K. Arai and Araya, \{M. C.\} and Areeda, \{J. S.\} and M. Ar{\`e}ne and N. Arnaud and S. Ascenzi and G. Ashton and Aston, \{S. M.\} and P. Astone and F. Aubin and P. Aufmuth and K. Aultoneal and C. Austin and V. Avendano and A. Avila-Alvarez and S. Babak and P. Bacon and F. Badaracco and Bader, \{M. K.M.\} and S. Bae and Baker, \{P. T.\} and C. Markakis",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = dec,

day = "4",

doi = "10.1103/PhysRevD.100.122002",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

number = "12",

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TY - JOUR

T1 - Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

AU - (LIGO Scientific Collaboration and Virgo Collaboration)

AU - Abbott, B. P.

AU - Abbott, R.

AU - Abbott, T. D.

AU - Abraham, S.

AU - Acernese, F.

AU - Ackley, K.

AU - Adams, C.

AU - Adhikari, R. X.

AU - Adya, V. B.

AU - Affeldt, C.

AU - Agathos, M.

AU - Agatsuma, K.

AU - Aggarwal, N.

AU - Aguiar, O. D.

AU - Aiello, L.

AU - Ain, A.

AU - Ajith, P.

AU - Allen, G.

AU - Allocca, A.

AU - Aloy, M. A.

AU - Altin, P. A.

AU - Amato, A.

AU - Ananyeva, A.

AU - Anderson, S. B.

AU - Anderson, W. G.

AU - Angelova, S. V.

AU - Antier, S.

AU - Appert, S.

AU - Arai, K.

AU - Araya, M. C.

AU - Areeda, J. S.

AU - Arène, M.

AU - Arnaud, N.

AU - Ascenzi, S.

AU - Ashton, G.

AU - Aston, S. M.

AU - Astone, P.

AU - Aubin, F.

AU - Aufmuth, P.

AU - Aultoneal, K.

AU - Austin, C.

AU - Avendano, V.

AU - Avila-Alvarez, A.

AU - Babak, S.

AU - Bacon, P.

AU - Badaracco, F.

AU - Bader, M. K.M.

AU - Bae, S.

AU - Baker, P. T.

AU - Markakis, C.

PY - 2019/12/4

Y1 - 2019/12/4

N2 - 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 h095%=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.

AB - 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 h095%=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.

UR - https://www.scopus.com/pages/publications/85076733600

U2 - 10.1103/PhysRevD.100.122002

DO - 10.1103/PhysRevD.100.122002

M3 - Article

AN - SCOPUS:85076733600

SN - 2470-0010

VL - 100

JO - Physical Review D

JF - Physical Review D

IS - 12

M1 - 122002

ER -

Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

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