Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model
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 filt...
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| Veröffentlicht in: | Physical review. D 2019-12, Vol.100 (12), p.1, Article 122002 |
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| creator | Abbott, B. P. Abbott, R. Abbott, T. D. Abraham, S. Acernese, F. Ackley, K. Adams, C. Adhikari, R. X. Adya, V. B. Affeldt, C. Agathos, M. Agatsuma, K. Aggarwal, N. Aguiar, O. D. Aiello, L. Ain, A. Ajith, P. Allen, G. Allocca, A. Aloy, M. A. Altin, P. A. Amato, A. Ananyeva, A. Anderson, S. B. Anderson, W. G. Angelova, S. V. Antier, S. Appert, S. Arai, K. Araya, M. C. Areeda, J. S. Arène, M. Arnaud, N. Ascenzi, S. Ashton, G. Aston, S. M. Astone, P. Aubin, F. Aufmuth, P. AultONeal, K. Austin, C. Avendano, V. Avila-Alvarez, A. Babak, S. Bacon, P. Badaracco, F. Bader, M. K. M. Bae, S. Baker, P. T. Baldaccini, F. Ballardin, G. Ballmer, S. W. Banagiri, S. Barayoga, J. C. Barclay, S. E. Barish, B. C. Barker, D. Barkett, K. Barnum, S. Barone, F. Barr, B. Barsotti, L. Barsuglia, M. Barta, D. Bartlett, J. Bartos, I. Bassiri, R. Basti, A. Bawaj, M. Bayley, J. C. Bazzan, M. Bécsy, B. Bejger, M. Belahcene, I. Bell, A. S. Beniwal, D. Berger, B. K. Bergmann, G. Bernuzzi, S. Bero, J. J. Berry, C. P. L. Bersanetti, D. Bertolini, A. Betzwieser, J. Bhandare, R. Bidler, J. Bilenko, I. A. Bilgili, S. A. Billingsley, G. Birch, J. Birney, I. A. Birnholtz, O. Biscans, S. Biscoveanu, S. Bisht, A. Bitossi, M. Bizouard, M. A. Blackburn, J. K. Blair, C. D. Blair, D. G. |
| description | 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 h95%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. |
| doi_str_mv | 10.1103/PhysRevD.100.122002 |
| format | Article |
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P. ; Abbott, R. ; Abbott, T. D. ; Abraham, S. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adhikari, R. X. ; Adya, V. B. ; Affeldt, C. ; Agathos, M. ; Agatsuma, K. ; Aggarwal, N. ; Aguiar, O. D. ; Aiello, L. ; Ain, A. ; Ajith, P. ; Allen, G. ; Allocca, A. ; Aloy, M. A. ; Altin, P. A. ; Amato, A. ; Ananyeva, A. ; Anderson, S. B. ; Anderson, W. G. ; Angelova, S. V. ; Antier, S. ; Appert, S. ; Arai, K. ; Araya, M. C. ; Areeda, J. S. ; Arène, M. ; Arnaud, N. ; Ascenzi, S. ; Ashton, G. ; Aston, S. M. ; Astone, P. ; Aubin, F. ; Aufmuth, P. ; AultONeal, K. ; Austin, C. ; Avendano, V. ; Avila-Alvarez, A. ; Babak, S. ; Bacon, P. ; Badaracco, F. ; Bader, M. K. M. ; Bae, S. ; Baker, P. T. ; Baldaccini, F. ; Ballardin, G. ; Ballmer, S. W. ; Banagiri, S. ; Barayoga, J. C. ; Barclay, S. E. ; Barish, B. C. ; Barker, D. ; Barkett, K. ; Barnum, S. ; Barone, F. ; Barr, B. ; Barsotti, L. ; Barsuglia, M. ; Barta, D. ; Bartlett, J. ; Bartos, I. ; Bassiri, R. ; Basti, A. ; Bawaj, M. ; Bayley, J. C. ; Bazzan, M. ; Bécsy, B. ; Bejger, M. ; Belahcene, I. ; Bell, A. S. ; Beniwal, D. ; Berger, B. K. ; Bergmann, G. ; Bernuzzi, S. ; Bero, J. J. ; Berry, C. P. L. ; Bersanetti, D. ; Bertolini, A. ; Betzwieser, J. ; Bhandare, R. ; Bidler, J. ; Bilenko, I. A. ; Bilgili, S. A. ; Billingsley, G. ; Birch, J. ; Birney, I. A. ; Birnholtz, O. ; Biscans, S. ; Biscoveanu, S. ; Bisht, A. ; Bitossi, M. ; Bizouard, M. A. ; Blackburn, J. K. ; Blair, C. D. ; Blair, D. G.</creator><creatorcontrib>Abbott, B. P. ; Abbott, R. ; Abbott, T. D. ; Abraham, S. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adhikari, R. X. ; Adya, V. B. ; Affeldt, C. ; Agathos, M. ; Agatsuma, K. ; Aggarwal, N. ; Aguiar, O. D. ; Aiello, L. ; Ain, A. ; Ajith, P. ; Allen, G. ; Allocca, A. ; Aloy, M. A. ; Altin, P. A. ; Amato, A. ; Ananyeva, A. ; Anderson, S. B. ; Anderson, W. G. ; Angelova, S. V. ; Antier, S. ; Appert, S. ; Arai, K. ; Araya, M. C. ; Areeda, J. S. ; Arène, M. ; Arnaud, N. ; Ascenzi, S. ; Ashton, G. ; Aston, S. M. ; Astone, P. ; Aubin, F. ; Aufmuth, P. ; AultONeal, K. ; Austin, C. ; Avendano, V. ; Avila-Alvarez, A. ; Babak, S. ; Bacon, P. ; Badaracco, F. ; Bader, M. K. M. ; Bae, S. ; Baker, P. T. ; Baldaccini, F. ; Ballardin, G. ; Ballmer, S. W. ; Banagiri, S. ; Barayoga, J. C. ; Barclay, S. E. ; Barish, B. C. ; Barker, D. ; Barkett, K. ; Barnum, S. ; Barone, F. ; Barr, B. ; Barsotti, L. ; Barsuglia, M. ; Barta, D. ; Bartlett, J. ; Bartos, I. ; Bassiri, R. ; Basti, A. ; Bawaj, M. ; Bayley, J. C. ; Bazzan, M. ; Bécsy, B. ; Bejger, M. ; Belahcene, I. ; Bell, A. S. ; Beniwal, D. ; Berger, B. K. ; Bergmann, G. ; Bernuzzi, S. ; Bero, J. J. ; Berry, C. P. L. ; Bersanetti, D. ; Bertolini, A. ; Betzwieser, J. ; Bhandare, R. ; Bidler, J. ; Bilenko, I. A. ; Bilgili, S. A. ; Billingsley, G. ; Birch, J. ; Birney, I. A. ; Birnholtz, O. ; Biscans, S. ; Biscoveanu, S. ; Bisht, A. ; Bitossi, M. ; Bizouard, M. A. ; Blackburn, J. K. ; Blair, C. D. ; Blair, D. G. ; LIGO Scientific Collaboration and Virgo Collaboration ; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</creatorcontrib><description>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 h95%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.</description><identifier>ISSN: 2470-0010</identifier><identifier>ISSN: 1536-6065</identifier><identifier>ISSN: 0031-899X</identifier><identifier>EISSN: 2470-0029</identifier><identifier>DOI: 10.1103/PhysRevD.100.122002</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>ASTRONOMY AND ASTROPHYSICS ; Aérospatiale, astronomie & astrophysique ; Confidence ; Frequency ranges ; Gravitation ; Gravitational waves ; Inclination angle ; Markov analysis ; Markov chains ; Matched filters ; Physical, chemical, mathematical & earth Sciences ; Physique, chimie, mathématiques & sciences de la terre ; Searching ; Space science, astronomy & astrophysics ; X ray binaries ; X ray stars</subject><ispartof>Physical review. 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K.</creatorcontrib><creatorcontrib>Blair, C. D.</creatorcontrib><creatorcontrib>Blair, D. G.</creatorcontrib><creatorcontrib>LIGO Scientific Collaboration and Virgo Collaboration</creatorcontrib><creatorcontrib>Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</creatorcontrib><title>Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model</title><title>Physical review. D</title><description>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 h95%0 = 3.47 × 10−25 when marginalizing over source inclination angle. 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C.</creator><creator>Barker, D.</creator><creator>Barkett, K.</creator><creator>Barnum, S.</creator><creator>Barone, F.</creator><creator>Barr, B.</creator><creator>Barsotti, L.</creator><creator>Barsuglia, M.</creator><creator>Barta, D.</creator><creator>Bartlett, J.</creator><creator>Bartos, I.</creator><creator>Bassiri, R.</creator><creator>Basti, A.</creator><creator>Bawaj, M.</creator><creator>Bayley, J. C.</creator><creator>Bazzan, M.</creator><creator>Bécsy, B.</creator><creator>Bejger, M.</creator><creator>Belahcene, I.</creator><creator>Bell, A. S.</creator><creator>Beniwal, D.</creator><creator>Berger, B. K.</creator><creator>Bergmann, G.</creator><creator>Bernuzzi, S.</creator><creator>Bero, J. J.</creator><creator>Berry, C. P. L.</creator><creator>Bersanetti, D.</creator><creator>Bertolini, A.</creator><creator>Betzwieser, J.</creator><creator>Bhandare, R.</creator><creator>Bidler, J.</creator><creator>Bilenko, I. A.</creator><creator>Bilgili, S. A.</creator><creator>Billingsley, G.</creator><creator>Birch, J.</creator><creator>Birney, I. A.</creator><creator>Birnholtz, O.</creator><creator>Biscans, S.</creator><creator>Biscoveanu, S.</creator><creator>Bisht, A.</creator><creator>Bitossi, M.</creator><creator>Bizouard, M. A.</creator><creator>Blackburn, J. K.</creator><creator>Blair, C. D.</creator><creator>Blair, D. G.</creator><general>American Physical Society</general><general>American Physical Society (APS)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>Q33</scope><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>20191204</creationdate><title>Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model</title><author>Abbott, B. P. ; Abbott, R. ; Abbott, T. D. ; Abraham, S. ; Acernese, F. ; Ackley, K. ; Adams, C. ; Adhikari, R. X. ; Adya, V. B. ; Affeldt, C. ; Agathos, M. ; Agatsuma, K. ; Aggarwal, N. ; Aguiar, O. D. ; Aiello, L. ; Ain, A. ; Ajith, P. ; Allen, G. ; Allocca, A. ; Aloy, M. A. ; Altin, P. A. ; Amato, A. ; Ananyeva, A. ; Anderson, S. B. ; Anderson, W. G. ; Angelova, S. V. ; Antier, S. ; Appert, S. ; Arai, K. ; Araya, M. C. ; Areeda, J. S. ; Arène, M. ; Arnaud, N. ; Ascenzi, S. ; Ashton, G. ; Aston, S. M. ; Astone, P. ; Aubin, F. ; Aufmuth, P. ; AultONeal, K. ; Austin, C. ; Avendano, V. ; Avila-Alvarez, A. ; Babak, S. ; Bacon, P. ; Badaracco, F. ; Bader, M. K. M. ; Bae, S. ; Baker, P. T. ; Baldaccini, F. ; Ballardin, G. ; Ballmer, S. W. ; Banagiri, S. ; Barayoga, J. C. ; Barclay, S. E. ; Barish, B. C. ; Barker, D. ; Barkett, K. ; Barnum, S. ; Barone, F. ; Barr, B. ; Barsotti, L. ; Barsuglia, M. ; Barta, D. ; Bartlett, J. ; Bartos, I. ; Bassiri, R. ; Basti, A. ; Bawaj, M. ; Bayley, J. C. ; Bazzan, M. ; Bécsy, B. ; Bejger, M. ; Belahcene, I. ; Bell, A. S. ; Beniwal, D. ; Berger, B. K. ; Bergmann, G. ; Bernuzzi, S. ; Bero, J. J. ; Berry, C. P. L. ; Bersanetti, D. ; Bertolini, A. ; Betzwieser, J. ; Bhandare, R. ; Bidler, J. ; Bilenko, I. A. ; Bilgili, S. A. ; Billingsley, G. ; Birch, J. ; Birney, I. A. ; Birnholtz, O. ; Biscans, S. ; Biscoveanu, S. ; Bisht, A. ; Bitossi, M. ; Bizouard, M. A. ; Blackburn, J. K. ; Blair, C. D. ; Blair, D. G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-55f4453524ab37e19f5082b9f81630781f121af295d3ace09cd2d856810a9f6c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>ASTRONOMY AND ASTROPHYSICS</topic><topic>Aérospatiale, astronomie & astrophysique</topic><topic>Confidence</topic><topic>Frequency ranges</topic><topic>Gravitation</topic><topic>Gravitational waves</topic><topic>Inclination angle</topic><topic>Markov analysis</topic><topic>Markov chains</topic><topic>Matched filters</topic><topic>Physical, chemical, mathematical & earth Sciences</topic><topic>Physique, chimie, mathématiques & sciences de la terre</topic><topic>Searching</topic><topic>Space science, astronomy & astrophysics</topic><topic>X ray binaries</topic><topic>X ray stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Abbott, B. P.</creatorcontrib><creatorcontrib>Abbott, R.</creatorcontrib><creatorcontrib>Abbott, T. D.</creatorcontrib><creatorcontrib>Abraham, S.</creatorcontrib><creatorcontrib>Acernese, F.</creatorcontrib><creatorcontrib>Ackley, K.</creatorcontrib><creatorcontrib>Adams, C.</creatorcontrib><creatorcontrib>Adhikari, R. X.</creatorcontrib><creatorcontrib>Adya, V. B.</creatorcontrib><creatorcontrib>Affeldt, C.</creatorcontrib><creatorcontrib>Agathos, M.</creatorcontrib><creatorcontrib>Agatsuma, K.</creatorcontrib><creatorcontrib>Aggarwal, N.</creatorcontrib><creatorcontrib>Aguiar, O. D.</creatorcontrib><creatorcontrib>Aiello, L.</creatorcontrib><creatorcontrib>Ain, A.</creatorcontrib><creatorcontrib>Ajith, P.</creatorcontrib><creatorcontrib>Allen, G.</creatorcontrib><creatorcontrib>Allocca, A.</creatorcontrib><creatorcontrib>Aloy, M. A.</creatorcontrib><creatorcontrib>Altin, P. A.</creatorcontrib><creatorcontrib>Amato, A.</creatorcontrib><creatorcontrib>Ananyeva, A.</creatorcontrib><creatorcontrib>Anderson, S. B.</creatorcontrib><creatorcontrib>Anderson, W. G.</creatorcontrib><creatorcontrib>Angelova, S. V.</creatorcontrib><creatorcontrib>Antier, S.</creatorcontrib><creatorcontrib>Appert, S.</creatorcontrib><creatorcontrib>Arai, K.</creatorcontrib><creatorcontrib>Araya, M. C.</creatorcontrib><creatorcontrib>Areeda, J. S.</creatorcontrib><creatorcontrib>Arène, M.</creatorcontrib><creatorcontrib>Arnaud, N.</creatorcontrib><creatorcontrib>Ascenzi, S.</creatorcontrib><creatorcontrib>Ashton, G.</creatorcontrib><creatorcontrib>Aston, S. M.</creatorcontrib><creatorcontrib>Astone, P.</creatorcontrib><creatorcontrib>Aubin, F.</creatorcontrib><creatorcontrib>Aufmuth, P.</creatorcontrib><creatorcontrib>AultONeal, K.</creatorcontrib><creatorcontrib>Austin, C.</creatorcontrib><creatorcontrib>Avendano, V.</creatorcontrib><creatorcontrib>Avila-Alvarez, A.</creatorcontrib><creatorcontrib>Babak, S.</creatorcontrib><creatorcontrib>Bacon, P.</creatorcontrib><creatorcontrib>Badaracco, F.</creatorcontrib><creatorcontrib>Bader, M. K. M.</creatorcontrib><creatorcontrib>Bae, S.</creatorcontrib><creatorcontrib>Baker, P. T.</creatorcontrib><creatorcontrib>Baldaccini, F.</creatorcontrib><creatorcontrib>Ballardin, G.</creatorcontrib><creatorcontrib>Ballmer, S. W.</creatorcontrib><creatorcontrib>Banagiri, S.</creatorcontrib><creatorcontrib>Barayoga, J. C.</creatorcontrib><creatorcontrib>Barclay, S. E.</creatorcontrib><creatorcontrib>Barish, B. C.</creatorcontrib><creatorcontrib>Barker, D.</creatorcontrib><creatorcontrib>Barkett, K.</creatorcontrib><creatorcontrib>Barnum, S.</creatorcontrib><creatorcontrib>Barone, F.</creatorcontrib><creatorcontrib>Barr, B.</creatorcontrib><creatorcontrib>Barsotti, L.</creatorcontrib><creatorcontrib>Barsuglia, M.</creatorcontrib><creatorcontrib>Barta, D.</creatorcontrib><creatorcontrib>Bartlett, J.</creatorcontrib><creatorcontrib>Bartos, I.</creatorcontrib><creatorcontrib>Bassiri, R.</creatorcontrib><creatorcontrib>Basti, A.</creatorcontrib><creatorcontrib>Bawaj, M.</creatorcontrib><creatorcontrib>Bayley, J. C.</creatorcontrib><creatorcontrib>Bazzan, M.</creatorcontrib><creatorcontrib>Bécsy, B.</creatorcontrib><creatorcontrib>Bejger, M.</creatorcontrib><creatorcontrib>Belahcene, I.</creatorcontrib><creatorcontrib>Bell, A. S.</creatorcontrib><creatorcontrib>Beniwal, D.</creatorcontrib><creatorcontrib>Berger, B. K.</creatorcontrib><creatorcontrib>Bergmann, G.</creatorcontrib><creatorcontrib>Bernuzzi, S.</creatorcontrib><creatorcontrib>Bero, J. J.</creatorcontrib><creatorcontrib>Berry, C. P. L.</creatorcontrib><creatorcontrib>Bersanetti, D.</creatorcontrib><creatorcontrib>Bertolini, A.</creatorcontrib><creatorcontrib>Betzwieser, J.</creatorcontrib><creatorcontrib>Bhandare, R.</creatorcontrib><creatorcontrib>Bidler, J.</creatorcontrib><creatorcontrib>Bilenko, I. A.</creatorcontrib><creatorcontrib>Bilgili, S. A.</creatorcontrib><creatorcontrib>Billingsley, G.</creatorcontrib><creatorcontrib>Birch, J.</creatorcontrib><creatorcontrib>Birney, I. A.</creatorcontrib><creatorcontrib>Birnholtz, O.</creatorcontrib><creatorcontrib>Biscans, S.</creatorcontrib><creatorcontrib>Biscoveanu, S.</creatorcontrib><creatorcontrib>Bisht, A.</creatorcontrib><creatorcontrib>Bitossi, M.</creatorcontrib><creatorcontrib>Bizouard, M. A.</creatorcontrib><creatorcontrib>Blackburn, J. K.</creatorcontrib><creatorcontrib>Blair, C. D.</creatorcontrib><creatorcontrib>Blair, D. G.</creatorcontrib><creatorcontrib>LIGO Scientific Collaboration and Virgo Collaboration</creatorcontrib><creatorcontrib>Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Université de Liège - Open Repository and Bibliography (ORBI)</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Abbott, B. P.</au><au>Abbott, R.</au><au>Abbott, T. D.</au><au>Abraham, S.</au><au>Acernese, F.</au><au>Ackley, K.</au><au>Adams, C.</au><au>Adhikari, R. X.</au><au>Adya, V. B.</au><au>Affeldt, C.</au><au>Agathos, M.</au><au>Agatsuma, K.</au><au>Aggarwal, N.</au><au>Aguiar, O. D.</au><au>Aiello, L.</au><au>Ain, A.</au><au>Ajith, P.</au><au>Allen, G.</au><au>Allocca, A.</au><au>Aloy, M. A.</au><au>Altin, P. A.</au><au>Amato, A.</au><au>Ananyeva, A.</au><au>Anderson, S. B.</au><au>Anderson, W. G.</au><au>Angelova, S. V.</au><au>Antier, S.</au><au>Appert, S.</au><au>Arai, K.</au><au>Araya, M. C.</au><au>Areeda, J. S.</au><au>Arène, M.</au><au>Arnaud, N.</au><au>Ascenzi, S.</au><au>Ashton, G.</au><au>Aston, S. M.</au><au>Astone, P.</au><au>Aubin, F.</au><au>Aufmuth, P.</au><au>AultONeal, K.</au><au>Austin, C.</au><au>Avendano, V.</au><au>Avila-Alvarez, A.</au><au>Babak, S.</au><au>Bacon, P.</au><au>Badaracco, F.</au><au>Bader, M. K. M.</au><au>Bae, S.</au><au>Baker, P. T.</au><au>Baldaccini, F.</au><au>Ballardin, G.</au><au>Ballmer, S. W.</au><au>Banagiri, S.</au><au>Barayoga, J. C.</au><au>Barclay, S. E.</au><au>Barish, B. C.</au><au>Barker, D.</au><au>Barkett, K.</au><au>Barnum, S.</au><au>Barone, F.</au><au>Barr, B.</au><au>Barsotti, L.</au><au>Barsuglia, M.</au><au>Barta, D.</au><au>Bartlett, J.</au><au>Bartos, I.</au><au>Bassiri, R.</au><au>Basti, A.</au><au>Bawaj, M.</au><au>Bayley, J. C.</au><au>Bazzan, M.</au><au>Bécsy, B.</au><au>Bejger, M.</au><au>Belahcene, I.</au><au>Bell, A. S.</au><au>Beniwal, D.</au><au>Berger, B. K.</au><au>Bergmann, G.</au><au>Bernuzzi, S.</au><au>Bero, J. J.</au><au>Berry, C. P. L.</au><au>Bersanetti, D.</au><au>Bertolini, A.</au><au>Betzwieser, J.</au><au>Bhandare, R.</au><au>Bidler, J.</au><au>Bilenko, I. A.</au><au>Bilgili, S. A.</au><au>Billingsley, G.</au><au>Birch, J.</au><au>Birney, I. A.</au><au>Birnholtz, O.</au><au>Biscans, S.</au><au>Biscoveanu, S.</au><au>Bisht, A.</au><au>Bitossi, M.</au><au>Bizouard, M. A.</au><au>Blackburn, J. K.</au><au>Blair, C. D.</au><au>Blair, D. G.</au><aucorp>LIGO Scientific Collaboration and Virgo Collaboration</aucorp><aucorp>Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model</atitle><jtitle>Physical review. D</jtitle><date>2019-12-04</date><risdate>2019</risdate><volume>100</volume><issue>12</issue><spage>1</spage><pages>1-</pages><artnum>122002</artnum><issn>2470-0010</issn><issn>1536-6065</issn><issn>0031-899X</issn><eissn>2470-0029</eissn><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 h95%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.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.100.122002</doi><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2470-0010 |
| ispartof | Physical review. D, 2019-12, Vol.100 (12), p.1, Article 122002 |
| issn | 2470-0010 1536-6065 0031-899X 2470-0029 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1603556 |
| source | American Physical Society Journals |
| subjects | ASTRONOMY AND ASTROPHYSICS Aérospatiale, astronomie & astrophysique Confidence Frequency ranges Gravitation Gravitational waves Inclination angle Markov analysis Markov chains Matched filters Physical, chemical, mathematical & earth Sciences Physique, chimie, mathématiques & sciences de la terre Searching Space science, astronomy & astrophysics X ray binaries X ray stars |
| title | 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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