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

被引：50

作者：

Abbott, B. P. ^{[1
]}

Abbott, R. ^{[1
]}

Abbott, T. D. ^{[2
]}

Abraham, S. ^{[3
]}

Acernese, F. ^{[4
,5
]}

Ackley, K. ^{[6
]}

Adams, C. ^{[7
]}

Adhikari, R. X. ^{[1
]}

Adya, V. B. ^{[8
]}

Affeldt, C. ^{[9
,10
]}

Agathos, M. ^{[11
,12
]}

Agatsuma, K. ^{[13
]}

Aggarwal, N. ^{[14
]}

Aguiar, O. D. ^{[15
]}

Aiello, L. ^{[16
,17
]}

Ain, A. ^{[3
,21
,23
,44
]}

Ajith, P. ^{[18
]}

Allen, G. ^{[19
]}

Allocca, A. ^{[20
,21
]}

Aloy, M. A. ^{[22
]}

Altin, P. A. ^{[8
]}

Amato, A. ^{[23
]}

Ananyeva, A. ^{[1
]}

Anderson, S. B. ^{[1
]}

Anderson, W. G. ^{[24
]}

Angelova, S. V. ^{[25
]}

Antier, S. ^{[26
]}

Appert, S. ^{[1
]}

Arai, K. ^{[1
]}

Araya, M. C. ^{[1
]}

Areeda, J. S. ^{[27
]}

Arene, M. ^{[26
]}

Arnaud, N. ^{[28
,29
]}

Ascenzi, S. ^{[16
,31
]}

Ashton, G. ^{[6
]}

Aston, S. M. ^{[7
]}

Astone, P. ^{[32
]}

Aubin, F. ^{[33
]}

Aufmuth, P. ^{[10
]}

AultONeal, K. ^{[34
]}

Austin, C. ^{[2
]}

Avendano, V. ^{[35
]}

Avila-Alvarez, A. ^{[27
]}

Babak, S. ^{[26
]}

Bacon, P. ^{[26
]}

Badaracco, F. ^{[16
,17
]}

Bader, M. K. M. ^{[36
]}

Bae, S. ^{[37
]}

Baker, P. T. ^{[38
]}

Baldaccini, F. ^{[39
,40
]}

机构：

[1] CALTECH, LIGO, Pasadena, CA 91125 USA

[2] Louisiana State Univ, Baton Rouge, LA 70803 USA

[3] Interuniv Ctr Astron & Astrophys, Pune 411007, Maharashtra, India

[4] Univ Salerno, Dipartimento Farm, I-84084 Salerno, Italy

[5] Ist Nazl Fis Nucl, Sez Napoli, Complesso Univ Mt St Angelo, I-80126 Naples, Italy

[6] Monash Univ, Sch Phys & Astron, OzGrav, Clayton, Vic 3800, Australia

[7] LIGO Livingston Observ, Livingston, LA 70754 USA

[8] Australian Natl Univ, OzGrav, Canberra, ACT 0200, Australia

[9] Albert Einstein Inst, Max Planck Inst Gravitat Phys, D-30167 Hannover, Germany

[10] Leibniz Univ Hannover, D-30167 Hannover, Germany

[11] Friedrich Schiller Univ Jena, Inst Theoret Phys, D-07743 Jena, Germany

[12] Univ Cambridge, Cambridge CB2 1TN, England

[13] Univ Birmingham, Birmingham B15 2TT, W Midlands, England

[14] MIT, LIGO, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[15] Inst Nacl Pesquisas Espaciais, BR-12227010 Sao Paulo, Brazil

[16] GSSI, I-67100 Laquila, Italy

[17] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, Italy

[18] Tata Inst Fundamental Res, Int Ctr Theoret Sci, Bengaluru 560089, India

[19] Univ Illinois, NCSA, Urbana, IL 61801 USA

[20] Univ Pisa, I-56127 Pisa, Italy

[21] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[22] Univ Valencia, Dept Astron & Astrofis, E-46100 Valencia, Spain

[23] CNRS, IN2P3, LMA, F-69622 Villeurbanne, France

[24] Univ Wisconsin, Milwaukee, WI 53201 USA

[25] Univ Strathclyde, SUPA, Glasgow G1 1XQ, Lanark, Scotland

[26] Univ Paris Diderot, Observ Paris, Sorbonne Paris Cite, APC,CNRS,IN2P3,CEA,Irfu, Paris 13, France

[27] Calif State Univ Fullerton, Fullerton, CA 92831 USA

[28] Univ Paris Saclay, Univ Paris, CNRS, LAL,IN2P3, F-91898 Orsay, France

[29] EGO, I-56021 Pisa, Italy

[30] Univ Florida, Gainesville, FL 32611 USA

[31] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

[32] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy

[33] Univ Grenoble Alpes, Univ Savoie Mt Blanc, LAPP, CNRS,IN2P3, F-74941 Annecy, France

[34] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA

[35] Montclair State Univ, Montclair, NJ 07043 USA

[36] Nikhef, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands

[37] Korea Inst Sci & Technol Informat, Daejeon 34141, South Korea

[38] West Virginia Univ, Morgantown, WV 26506 USA

[39] Univ Perugia, I-06123 Perugia, Italy

[40] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy

[41] Syracuse Univ, Syracuse, NY 13244 USA

[42] Univ Minnesota, Minneapolis, MN 55455 USA

[43] Univ Milano Bicocca, I-20126 Milan, Italy

[44] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy

[45] Univ Glasgow, SUPA, Glasgow G12 8QQ, Lanark, Scotland

[46] LIGO Hanford Observ, Richland, WA 99352 USA

[47] CALTECH, CaRT, Pasadena, CA 91125 USA

[48] Univ Salerno, Scuola Med Salernitana, Dipartimento Med Chirurg & Odontoiatria, I-84081 Salerno, Italy

[49] RMKI, Wigner RCP, Konkoly Thege Miklos Ut 29-33, H-1121 Budapest, Hungary

[50] Stanford Univ, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 12期

基金：

新加坡国家研究基金会; 俄罗斯科学基金会; 匈牙利科学研究基金会; 中国国家自然科学基金; 俄罗斯基础研究基金会; 英国工程与自然科学研究理事会; 瑞士国家科学基金会;

关键词：

X-RAY BINARIES; RADIATION; EMISSION; NOISE;

D O I：

10.1103/PhysRevD.100.122002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 h(0)(95%) = 3.47 x 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.

引用

页数：21

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