Constraining the p-Mode-g-Mode Tidal Instability with GW170817

被引：45

作者：

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

Abbott, R. ^{[1
]}

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

Acernese, F. ^{[3
,4
]}

Ackley, K. ^{[5
]}

Adams, C. ^{[6
]}

Adams, T. ^{[7
]}

Addesso, P. ^{[8
,9
]}

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

Adya, V. B. ^{[10
,11
]}

Affeldt, C. ^{[10
,11
]}

Agarwal, B. ^{[12
]}

Agathos, M. ^{[13
]}

Agatsuma, K. ^{[14
]}

Aggarwal, N. ^{[15
]}

Aguiar, O. D. ^{[16
]}

Aiello, L. ^{[17
,18
]}

Ain, A. ^{[19
]}

Ajith, P. ^{[20
]}

Allen, B. ^{[10
,11
,21
]}

Allen, G. ^{[12
]}

Allocca, A. ^{[22
,23
]}

Aloy, M. A. ^{[24
]}

Altin, P. A. ^{[25
]}

Amato, A. ^{[26
]}

Ananyeva, A. ^{[1
]}

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

Anderson, W. G. ^{[21
]}

Angelova, S. V. ^{[27
]}

Antier, S. ^{[28
]}

Appert, S. ^{[1
]}

Arai, K. ^{[1
]}

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

Areeda, J. S. ^{[29
]}

Arene, M. ^{[30
]}

Arnaud, N. ^{[28
,31
]}

Arun, K. G. ^{[32
]}

Ascenzi, S. ^{[33
,34
]}

Ashton, G. ^{[5
]}

Ast, M. ^{[35
]}

Aston, S. M. ^{[6
]}

Astone, P. ^{[36
]}

Atallah, D. V. ^{[37
]}

Aubin, F. ^{[7
]}

Aufmuth, P. ^{[11
]}

Aulbert, C. ^{[10
]}

AultONeal, K. ^{[38
]}

Austin, C. ^{[2
]}

Avila-Alvarez, A. ^{[29
]}

Babak, S. ^{[30
,39
]}

机构：

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

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

[3] Univ Salerno, Fisciano, I-84084 Salerno, Italy

[4] Complesso Univ Monte S Angelo, INFN, Sez Napoli, I-80126 Naples, Italy

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

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

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

[8] Univ Sannio Benevento, I-82100 Benevento, Italy

[9] INFN, Sez Napoli, I-80100 Naples, Italy

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

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

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

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

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

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

[16] Inst Nacl Pesquisas Espaciais, 12227-010 Sao Jose Campos, Sao Paulo, Brazil

[17] GSSI, I-67100 Laquila, Italy

[18] INFN, Lab Nazl Gran Sasso, I-67100 Assergi, Italy

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

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

[21] Univ Wisconsin, Milwaukee, WI 53201 USA

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

[23] INFN, Sez Pisa, Via S Lorenzo 26, I-56127 Pisa, Italy

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

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

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

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

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

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

[30] Univ Paris Diderot, AstroParticule & Cosmol, Sorbonne Paris Cite, APC,IN2P3,CEA,Irfu,Observ Paris,CNRS, F-75205 Paris 13, France

[31] European Gravitat Observ EGO, I-56021 Pisa, Italy

[32] Chennai Math Inst, Chennai 603103, Tamil Nadu, India

[33] Univ Roma Tor Vergata, I-00133 Rome, Italy

[34] INFN, Sez Roma Tor Vergata, I-00137 Rome, Italy

[35] Univ Hamburg, D-22761 Hamburg, Germany

[36] INFN, Sez Roma, I-00185 Rome, Italy

[37] Cardiff Univ, Cardiff CF24 3AA, S Glam, Wales

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

[39] Max Planck Inst Gravitat Phys, Albert Einstein Inst, D-14476 Potsdam, Germany

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

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

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

[43] INFN, Sez Perugia, I-06123 Perugia, Italy

[44] Syracuse Univ, Syracuse, NY 13244 USA

[45] Univ Minnesota, Minneapolis, MN 55455 USA

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

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

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

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

[50] Univ Florida, Gainesville, FL 32611 USA

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 122卷 / 06期

基金：

匈牙利科学研究基金会; 俄罗斯基础研究基金会; 澳大利亚研究理事会; 中国国家自然科学基金; 瑞士国家科学基金会; 新加坡国家研究基金会; 俄罗斯科学基金会;

关键词：

GRAVITATIONAL-WAVES; NEUTRON-STARS; EXCITATION;

D O I：

10.1103/PhysRevLett.122.061104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We analyze the impact of a proposed tidal instability coupling p modes and g modes within neutron stars on GW170817. This nonresonant instability transfers energy from the orbit of the binary to internal modes of the stars, accelerating the gravitational-wave driven inspiral. We model the impact of this instability on the phasing of the gravitational wave signal using three parameters per star: an overall amplitude, a saturation frequency, and a spectral index. Incorporating these additional parameters, we compute the Bayes factor (ln B-!pg(pg)) comparing our p-g model to a standard one. We find that the observed signal is consistent with waveform models that neglect p-g effects, with ln B-!pg(pg) = 0.03(-0.58)(+0.70) (maximum a posteriori and 90% credible region). By injecting simulated signals that do not include p-g effects and recovering them with the p-g model, we show that there is a similar or equal to 50% probability of obtaining similar ln B-!pg(pg) even when p-g effects are absent. We find that the p-g amplitude for 1.4 M-circle dot neutron stars is constrained to less than a few tenths of the theoretical maximum, with maxima a posteriori near one-tenth this maximum and p-g saturation frequency similar to 70 Hz. This suggests that there are less than a few hundred excited modes, assuming they all saturate by wave breaking. For comparison, theoretical upper bounds suggest less than or similar to 10(3) modes saturate by wave breaking. Thus, the measured constraints only rule out extreme values of the p-g parameters. They also imply that the instability dissipates less than or similar to 10(51) erg over the entire inspiral, i.e., less than a few percent of the energy radiated as gravitational waves.

引用

页数：12

共 46 条

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