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 Collaborations; B. P. Abbott; R. Abbott; T. D. Abbott; S. Abraham; F. Acernese; K. Ackley; C. Adams; R. X. Adhikari; V. B. Adya; C. Affeldt; M. Agathos; K. Agatsuma; N. Aggarwal; O. D. Aguiar; L. Aiello; A. Ain; P. Ajith; G. Allen; A. Allocca; M. A. Aloy; P. A. Altin; A. Amato; A. Ananyeva; S. B. Anderson; W. G. Anderson; S. V. Angelova; S. Antier; S. Appert; K. Arai; M. C. Araya; J. S. Areeda; M. Arène; N. Arnaud; S. Ascenzi; G. Ashton; S. M. Aston; P. Astone; F. Aubin; P. Aufmuth; K. Aultoneal; C. Austin; V. Avendano; A. Avila-Alvarez; S. Babak; P. Bacon; F. Badaracco; M. K.M. Bader; S. Bae; P. T. Baker; F. Baldaccini; G. Ballardin; S. W. Ballmer; S. Banagiri; J. C. Barayoga; S. E. Barclay; B. C. Barish; D. Barker; K. Barkett; S. Barnum; F. Barone; B. Barr; L. Barsotti; M. Barsuglia; D. Barta; J. Bartlett; I. Bartos; R. Bassiri; A. Basti; M. Bawaj; J. C. Bayley; M. Bazzan; B. Bécsy; M. Bejger; I. Belahcene; A. S. Bell; D. Beniwal; B. K. Berger; G. Bergmann; S. Bernuzzi; J. J. Bero; C. P.L. Berry; D. Bersanetti; A. Bertolini; J. Betzwieser; R. Bhandare; J. Bidler; I. A. Bilenko; S. A. Bilgili; G. Billingsley; J. Birch; R. Birney; O. Birnholtz; S. Biscans; S. Biscoveanu; A. Bisht; M. Bitossi; M. A. Bizouard; J. K. Blackburn; C. D. Blair; D. G. Blair; R. M. Blair; S. Bloemen; N. Bode; M. Boer; Y. Boetzel; G. Bogaert; F. Bondu; E. Bonilla; R. Bonnand; P. Booker; B. A. Boom; C. D. Booth; R. Bork; V. Boschi; S. Bose; K. Bossie; V. Bossilkov; J. Bosveld; Y. Bouffanais; A. Bozzi; C. Bradaschia; P. R. Brady; A. Bramley; M. Branchesi; J. E. Brau; T. Briant; J. H. Briggs; F. Brighenti; A. Brillet; M. Brinkmann; V. Brisson; P. Brockill; A. F. Brooks; D. D. Brown; S. Brunett; A. Buikema; T. Bulik; H. J. Bulten; A. Buonanno; D. Buskulic; C. Buy; R. L. Byer; M. Cabero; L. Cadonati; G. Cagnoli; C. Cahillane; J. Calderón Bustillo; T. A. Callister; E. Calloni; J. B. Camp; W. A. Campbell; M. Canepa; K. C. Cannon; H. Cao; J. Cao; E. Capocasa; F. Carbognani; S. Caride; M. F. Carney; G. Carullo; J. Casanueva Diaz; C. Casentini; S. Caudill; M. Cavaglià; F. Cavalier; R. Cavalieri; G. Cella; P. Cerdá-Durán; G. Cerretani; E. Cesarini; O. Chaibi; K. Chakravarti; S. J. Chamberlin; M. Chan; S. Chao; P. Charlton; E. A. Chase; E. Chassande-Mottin; D. Chatterjee; M. Chaturvedi; B. D. Cheeseboro; H. Y. Chen; X. Chen; Y. Chen; H. P. Cheng; C. K. Cheong; H. Y. Chia; A. Chincarini; A. Chiummo; G. Cho; H. S. Cho; M. Cho; N. Christensen; Q. Chu; S. Chua; K. W. Chung; S. Chung; G. Ciani; A. A. Ciobanu; R. Ciolfi; F. Cipriano; A. Cirone; F. Clara; J. A. Clark; P. Clearwater; F. Cleva; C. Cocchieri; E. Coccia; P. F. Cohadon; D. Cohen; R. Colgan; M. Colleoni; C. G. Collette; C. Collins; L. R. Cominsky; M. Constancio; L. Conti; S. J. Cooper; P. Corban; T. R. Corbitt; I. Cordero-Carrión; K. R. Corley; N. Cornish; A. Corsi; S. Cortese; C. A. Costa; R. Cotesta; M. W. Coughlin; S. B. Coughlin; J. P. Coulon; S. T. Countryman; P. Couvares; P. B. Covas; E. E. Cowan; D. M. Coward; M. J. Cowart; D. C. Coyne; R. Coyne; J. D.E. Creighton; T. D. Creighton; S. L. Danilishin; A. W. Jones; L. Ju; J. Liu; J. J. McCann; M. A. Page; T. J. Slaven-Blair; J. V. Van Heijningen; C. Zhao

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 Collaborations, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. AlloccaM. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud, S. Ascenzi, G. Ashton, S. M. Aston, P. Astone, F. Aubin, P. Aufmuth, K. Aultoneal, C. Austin, V. Avendano, A. Avila-Alvarez, S. Babak, P. Bacon, F. Badaracco, M. K.M. Bader, S. Bae, P. T. Baker, F. Baldaccini, G. Ballardin, S. W. Ballmer, S. Banagiri, J. C. Barayoga, S. E. Barclay, B. C. Barish, D. Barker, K. Barkett, S. Barnum, F. Barone, B. Barr, L. Barsotti, M. Barsuglia, D. Barta, J. Bartlett, I. Bartos, R. Bassiri, A. Basti, M. Bawaj, J. C. Bayley, M. Bazzan, B. Bécsy, M. Bejger, I. Belahcene, A. S. Bell, D. Beniwal, B. K. Berger, G. Bergmann, S. Bernuzzi, J. J. Bero, C. P.L. Berry, D. Bersanetti, A. Bertolini, J. Betzwieser, R. Bhandare, J. Bidler, I. A. Bilenko, S. A. Bilgili, G. Billingsley, J. Birch, R. Birney, O. Birnholtz, S. Biscans, S. Biscoveanu, A. Bisht, M. Bitossi, M. A. Bizouard, J. K. Blackburn, C. D. Blair, D. G. Blair, R. M. Blair, S. Bloemen, N. Bode, M. Boer, Y. Boetzel, G. Bogaert, F. Bondu, E. Bonilla, R. Bonnand, P. Booker, B. A. Boom, C. D. Booth, R. Bork, V. Boschi, S. Bose, K. Bossie, V. Bossilkov, J. Bosveld, Y. Bouffanais, A. Bozzi, C. Bradaschia, P. R. Brady, A. Bramley, M. Branchesi, J. E. Brau, T. Briant, J. H. Briggs, F. Brighenti, A. Brillet, M. Brinkmann, V. Brisson, P. Brockill, A. F. Brooks, D. D. Brown, S. Brunett, A. Buikema, T. Bulik, H. J. Bulten, A. Buonanno, D. Buskulic, C. Buy, R. L. Byer, M. Cabero, L. Cadonati, G. Cagnoli, C. Cahillane, J. Calderón Bustillo, T. A. Callister, E. Calloni, J. B. Camp, W. A. Campbell, M. Canepa, K. C. Cannon, H. Cao, J. Cao, E. Capocasa, F. Carbognani, S. Caride, M. F. Carney, G. Carullo, J. Casanueva Diaz, C. Casentini, S. Caudill, M. Cavaglià, F. Cavalier, R. Cavalieri, G. Cella, P. Cerdá-Durán, G. Cerretani, E. Cesarini, O. Chaibi, K. Chakravarti, S. J. Chamberlin, M. Chan, S. Chao, P. Charlton, E. A. Chase, E. Chassande-Mottin, D. Chatterjee, M. Chaturvedi, B. D. Cheeseboro, H. Y. Chen, X. Chen, Y. Chen, H. P. Cheng, C. K. Cheong, H. Y. Chia, A. Chincarini, A. Chiummo, G. Cho, H. S. Cho, M. Cho, N. Christensen, Q. Chu, S. Chua, K. W. Chung, S. Chung, G. Ciani, A. A. Ciobanu, R. Ciolfi, F. Cipriano, A. Cirone, F. Clara, J. A. Clark, P. Clearwater, F. Cleva, C. Cocchieri, E. Coccia, P. F. Cohadon, D. Cohen, R. Colgan, M. Colleoni, C. G. Collette, C. Collins, L. R. Cominsky, M. Constancio, L. Conti, S. J. Cooper, P. Corban, T. R. Corbitt, I. Cordero-Carrión, K. R. Corley, N. Cornish, A. Corsi, S. Cortese, C. A. Costa, R. Cotesta, M. W. Coughlin, S. B. Coughlin, J. P. Coulon, S. T. Countryman, P. Couvares, P. B. Covas, E. E. Cowan, D. M. Coward, M. J. Cowart, D. C. Coyne, R. Coyne, J. D.E. Creighton, T. D. Creighton, S. L. Danilishin, A. W. Jones, L. Ju, J. Liu, J. J. McCann, M. A. Page, T. J. Slaven-Blair, J. V. Van Heijningen, C. Zhao

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

55 Citations (Scopus)

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
Publication status	Published - 4 Dec 2019

Access to Document

10.1103/PhysRevD.100.122002

https://link.aps.org/accepted/10.1103/PhysRevD.100.122002

Cite this

LIGO Scientific Collaboration and Virgo Collaborations, 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., ... Zhao, C. (2019). Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model. Physical Review D, 100(12), Article 122002. https://doi.org/10.1103/PhysRevD.100.122002

@article{36759375e0124ff0ad0ad21279e77060,

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 Collaborations} 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 F. Baldaccini and G. Ballardin and Ballmer, {S. W.} and S. Banagiri and Barayoga, {J. C.} and Barclay, {S. E.} and Barish, {B. C.} and D. Barker and K. Barkett and S. Barnum and F. Barone and B. Barr and L. Barsotti and M. Barsuglia and D. Barta and J. Bartlett and I. Bartos and R. Bassiri and A. Basti and M. Bawaj and Bayley, {J. C.} and M. Bazzan and B. B{\'e}csy and M. Bejger and I. Belahcene and Bell, {A. S.} and D. Beniwal and Berger, {B. K.} and G. Bergmann and S. Bernuzzi and Bero, {J. J.} and Berry, {C. P.L.} and D. Bersanetti and A. Bertolini and J. Betzwieser and R. Bhandare and J. Bidler and Bilenko, {I. A.} and Bilgili, {S. A.} and G. Billingsley and J. Birch and R. Birney and O. Birnholtz and S. Biscans and S. Biscoveanu and A. Bisht and M. Bitossi and Bizouard, {M. A.} and Blackburn, {J. K.} and Blair, {C. D.} and Blair, {D. G.} and Blair, {R. M.} and S. Bloemen and N. Bode and M. Boer and Y. Boetzel and G. Bogaert and F. Bondu and E. Bonilla and R. Bonnand and P. Booker and Boom, {B. A.} and Booth, {C. D.} and R. Bork and V. Boschi and S. Bose and K. Bossie and V. Bossilkov and J. Bosveld and Y. Bouffanais and A. Bozzi and C. Bradaschia and Brady, {P. R.} and A. Bramley and M. Branchesi and Brau, {J. E.} and T. Briant and Briggs, {J. H.} and F. Brighenti and A. Brillet and M. Brinkmann and V. Brisson and P. Brockill and Brooks, {A. F.} and Brown, {D. D.} and S. Brunett and A. Buikema and T. Bulik and Bulten, {H. J.} and A. Buonanno and D. Buskulic and C. Buy and Byer, {R. L.} and M. Cabero and L. Cadonati and G. Cagnoli and C. Cahillane and {Calder{\'o}n Bustillo}, J. and Callister, {T. A.} and E. Calloni and Camp, {J. B.} and Campbell, {W. A.} and M. Canepa and Cannon, {K. C.} and H. Cao and J. Cao and E. Capocasa and F. Carbognani and S. Caride and Carney, {M. F.} and G. Carullo and {Casanueva Diaz}, J. and C. Casentini and S. Caudill and M. Cavagli{\`a} and F. Cavalier and R. Cavalieri and G. Cella and P. Cerd{\'a}-Dur{\'a}n and G. Cerretani and E. Cesarini and O. Chaibi and K. Chakravarti and Chamberlin, {S. J.} and M. Chan and S. Chao and P. Charlton and Chase, {E. A.} and E. Chassande-Mottin and D. Chatterjee and M. Chaturvedi and Cheeseboro, {B. D.} and Chen, {H. Y.} and X. Chen and Y. Chen and Cheng, {H. P.} and Cheong, {C. K.} and Chia, {H. Y.} and A. Chincarini and A. Chiummo and G. Cho and Cho, {H. S.} and M. Cho and N. Christensen and Q. Chu and S. Chua and Chung, {K. W.} and S. Chung and G. Ciani and Ciobanu, {A. A.} and R. Ciolfi and F. Cipriano and A. Cirone and F. Clara and Clark, {J. A.} and P. Clearwater and F. Cleva and C. Cocchieri and E. Coccia and Cohadon, {P. F.} and D. Cohen and R. Colgan and M. Colleoni and Collette, {C. G.} and C. Collins and Cominsky, {L. R.} and M. Constancio and L. Conti and Cooper, {S. J.} and P. Corban and Corbitt, {T. R.} and I. Cordero-Carri{\'o}n and Corley, {K. R.} and N. Cornish and A. Corsi and S. Cortese and Costa, {C. A.} and R. Cotesta and Coughlin, {M. W.} and Coughlin, {S. B.} and Coulon, {J. P.} and Countryman, {S. T.} and P. Couvares and Covas, {P. B.} and Cowan, {E. E.} and Coward, {D. M.} and Cowart, {M. J.} and Coyne, {D. C.} and R. Coyne and Creighton, {J. D.E.} and Creighton, {T. D.} and Danilishin, {S. L.} and Jones, {A. W.} and L. Ju and J. Liu and McCann, {J. J.} and Page, {M. A.} and Slaven-Blair, {T. J.} and {Van Heijningen}, {J. V.} and C. Zhao",

year = "2019",

month = dec,

day = "4",

doi = "10.1103/PhysRevD.100.122002",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "12",

}

LIGO Scientific Collaboration and Virgo Collaborations, Abbott, BP, Abbott, R, Abbott, TD, Abraham, S, Acernese, F, Ackley, K, Adams, C, Adhikari, RX, Adya, VB, Affeldt, C, Agathos, M, Agatsuma, K, Aggarwal, N, Aguiar, OD, Aiello, L, Ain, A, Ajith, P, Allen, G, Allocca, A, Aloy, MA, Altin, PA, Amato, A, Ananyeva, A, Anderson, SB, Anderson, WG, Angelova, SV, Antier, S, Appert, S, Arai, K, Araya, MC, Areeda, JS, Arène, M, Arnaud, N, Ascenzi, S, Ashton, G, Aston, SM, Astone, P, Aubin, F, Aufmuth, P, Aultoneal, K, Austin, C, Avendano, V, Avila-Alvarez, A, Babak, S, Bacon, P, Badaracco, F, Bader, MKM, Bae, S, Baker, PT, Baldaccini, F, Ballardin, G, Ballmer, SW, Banagiri, S, Barayoga, JC, Barclay, SE, Barish, BC, 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, JC, Bazzan, M, Bécsy, B, Bejger, M, Belahcene, I, Bell, AS, Beniwal, D, Berger, BK, Bergmann, G, Bernuzzi, S, Bero, JJ, Berry, CPL, Bersanetti, D, Bertolini, A, Betzwieser, J, Bhandare, R, Bidler, J, Bilenko, IA, Bilgili, SA, Billingsley, G, Birch, J, Birney, R, Birnholtz, O, Biscans, S, Biscoveanu, S, Bisht, A, Bitossi, M, Bizouard, MA, Blackburn, JK, Blair, CD , Blair, DG, Blair, RM, Bloemen, S, Bode, N, Boer, M, Boetzel, Y, Bogaert, G, Bondu, F, Bonilla, E, Bonnand, R, Booker, P, Boom, BA, Booth, CD, Bork, R, Boschi, V, Bose, S, Bossie, K, Bossilkov, V, Bosveld, J, Bouffanais, Y, Bozzi, A, Bradaschia, C, Brady, PR, Bramley, A, Branchesi, M, Brau, JE, Briant, T, Briggs, JH, Brighenti, F, Brillet, A, Brinkmann, M, Brisson, V, Brockill, P, Brooks, AF, Brown, DD, Brunett, S, Buikema, A, Bulik, T, Bulten, HJ, Buonanno, A, Buskulic, D, Buy, C, Byer, RL, Cabero, M, Cadonati, L, Cagnoli, G, Cahillane, C, Calderón Bustillo, J, Callister, TA, Calloni, E, Camp, JB, Campbell, WA, Canepa, M, Cannon, KC, Cao, H, Cao, J, Capocasa, E, Carbognani, F, Caride, S, Carney, MF, Carullo, G, Casanueva Diaz, J, Casentini, C, Caudill, S, Cavaglià, M, Cavalier, F, Cavalieri, R, Cella, G, Cerdá-Durán, P, Cerretani, G, Cesarini, E, Chaibi, O, Chakravarti, K, Chamberlin, SJ, Chan, M, Chao, S, Charlton, P, Chase, EA, Chassande-Mottin, E, Chatterjee, D, Chaturvedi, M, Cheeseboro, BD, Chen, HY, Chen, X, Chen, Y, Cheng, HP, Cheong, CK, Chia, HY, Chincarini, A, Chiummo, A, Cho, G, Cho, HS, Cho, M, Christensen, N, Chu, Q, Chua, S, Chung, KW, Chung, S, Ciani, G, Ciobanu, AA, Ciolfi, R, Cipriano, F, Cirone, A, Clara, F, Clark, JA, Clearwater, P, Cleva, F, Cocchieri, C, Coccia, E, Cohadon, PF, Cohen, D, Colgan, R, Colleoni, M, Collette, CG, Collins, C, Cominsky, LR, Constancio, M, Conti, L, Cooper, SJ, Corban, P, Corbitt, TR, Cordero-Carrión, I, Corley, KR, Cornish, N, Corsi, A, Cortese, S, Costa, CA, Cotesta, R, Coughlin, MW, Coughlin, SB, Coulon, JP, Countryman, ST, Couvares, P, Covas, PB, Cowan, EE, Coward, DM, Cowart, MJ, Coyne, DC, Coyne, R, Creighton, JDE, Creighton, TD, Danilishin, SL, Jones, AW, Ju, L , Liu, J, McCann, JJ, Page, MA, Slaven-Blair, TJ, Van Heijningen, JV & Zhao, C 2019, 'Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model', Physical Review D, vol. 100, no. 12, 122002. https://doi.org/10.1103/PhysRevD.100.122002

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 Collaborations

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 - Baldaccini, F.

AU - Ballardin, G.

AU - Ballmer, S. W.

AU - Banagiri, S.

AU - Barayoga, J. C.

AU - Barclay, S. E.

AU - Barish, B. C.

AU - Barker, D.

AU - Barkett, K.

AU - Barnum, S.

AU - Barone, F.

AU - Barr, B.

AU - Barsotti, L.

AU - Barsuglia, M.

AU - Barta, D.

AU - Bartlett, J.

AU - Bartos, I.

AU - Bassiri, R.

AU - Basti, A.

AU - Bawaj, M.

AU - Bayley, J. C.

AU - Bazzan, M.

AU - Bécsy, B.

AU - Bejger, M.

AU - Belahcene, I.

AU - Bell, A. S.

AU - Beniwal, D.

AU - Berger, B. K.

AU - Bergmann, G.

AU - Bernuzzi, S.

AU - Bero, J. J.

AU - Berry, C. P.L.

AU - Bersanetti, D.

AU - Bertolini, A.

AU - Betzwieser, J.

AU - Bhandare, R.

AU - Bidler, J.

AU - Bilenko, I. A.

AU - Bilgili, S. A.

AU - Billingsley, G.

AU - Birch, J.

AU - Birney, R.

AU - Birnholtz, O.

AU - Biscans, S.

AU - Biscoveanu, S.

AU - Bisht, A.

AU - Bitossi, M.

AU - Bizouard, M. A.

AU - Blackburn, J. K.

AU - Blair, C. D.

AU - Blair, D. G.

AU - Blair, R. M.

AU - Bloemen, S.

AU - Bode, N.

AU - Boer, M.

AU - Boetzel, Y.

AU - Bogaert, G.

AU - Bondu, F.

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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 - http://www.scopus.com/inward/record.url?scp=85076733600&partnerID=8YFLogxK

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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