Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences

R. Abbott; T. D. Abbott; S. Abraham; F. Acernese; K. Ackley; A. Adams; C. Adams; R. X. Adhikari; V. B. Adya; C. Affeldt; D. Agarwal; M. Agathos; K. Agatsuma; N. Aggarwal; O. D. Aguiar; L. Aiello; A. Ain; P. Ajith; T. Akutsu; K. M. Aleman; G. Allen; A. Allocca; P. A. Altin; A. Amato; S. Anand; A. Ananyeva; S. B. Anderson; W. G. Anderson; M. Ando; S. Angelova; S. Ansoldi; J. M. Antelis; S. Antier; S. Appert; Koya Arai; Koji Arai; Y. Arai; S. Araki; A. Araya; M. C. Araya; J. S. Areeda; M. Arene; N. Aritomi; N. Arnaud; S. M. Aronson; K. G. Arun; H. Asada; Y. Asali; G. Ashton; Y. Aso; KAGRA Collaboration; LIGO Scientific Collaboration; Virgo Collaboration; Stefan Danilishin; Stefan Hild; Gideon Koekoek; Ayatri Singha; Viola Spagnuolo; Jessica Steinlechner; Sebastian Steinlechner; Johannes van den Brand; Andrei Utina

doi:10.3847/2041-8213/ac082e

Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences

R. Abbott^*, T. D. Abbott^*, S. Abraham, F. Acernese, K. Ackley, A. Adams, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, D. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, T. Akutsu, K. M. AlemanG. Allen, A. Allocca, P. A. Altin, A. Amato, S. Anand, A. Ananyeva, S. B. Anderson, W. G. Anderson, M. Ando, S. Angelova, S. Ansoldi, J. M. Antelis, S. Antier, S. Appert, Koya Arai, Koji Arai, Y. Arai, S. Araki, A. Araya, M. C. Araya, J. S. Areeda, M. Arene, N. Aritomi, N. Arnaud, S. M. Aronson, K. G. Arun, H. Asada, Y. Asali, G. Ashton, Y. Aso, KAGRA Collaboration, LIGO Scientific Collaboration, Virgo Collaboration, Stefan Danilishin, Stefan Hild, Gideon Koekoek, Ayatri Singha, Viola Spagnuolo, Jessica Steinlechner, Sebastian Steinlechner, Johannes van den Brand, Andrei Utina

^*Corresponding author for this work

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

Abstract

We report the observation of gravitational waves from two compact binary coalescences in LIGO's and Virgo's third observing run with properties consistent with neutron star-black hole (NSBH) binaries. The two events are named GW200105_162426 and GW200115_042309, abbreviated as GW200105 and GW200115; the first was observed by LIGO Livingston and Virgo and the second by all three LIGO-Virgo detectors. The source of GW200105 has component masses 8.9(-1.5)(+1.2) and 1.9(-0.2)(+0.3)M(circle dot), whereas the source of GW200115 has component masses 5.7(-2.1)(+1.8) and 1.5(-0.3)(+0.7)M(circle dot) (all measurements quoted at the 90% credible level). The probability that the secondary's mass is below the maximal mass of a neutron star is 89%-96% and 87%-98%, respectively, for GW200105 and GW200115, with the ranges arising from different astrophysical assumptions. The source luminosity distances are 280(-110)(+110) and 300(-100)(+150) Mpc, respectively. The magnitude of the primary spin of GW200105 is less than 0.23 at the 90% credible level, and its orientation is unconstrained. For GW200115, the primary spin has a negative spin projection onto the orbital angular momentum at 88% probability. We are unable to constrain the spin or tidal deformation of the secondary component for either event. We infer an NSBH merger rate density of 45-(+75)(33) Gpc(-3) yr(-1) when assuming that GW200105 and GW200115 are representative of the NSBH population or 130(-69)(+112) Gpc(-3) yr(-1) under the assumption of a broader distribution of component masses.

Original language	English
Article number	L5
Number of pages	24
Journal	Astrophysical Journal Letters
Volume	915
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/ac082e
Publication status	Published - 1 Jul 2021

Keywords

COMPACT BINARY COALESCENCES
SPIN-ORBIT MISALIGNMENT
REDUCED-ORDER MODEL
GAMMA-RAY BURSTS
ADVANCED-LIGO
MAXIMUM MASS
HUBBLE CONSTANT
BAYESIAN-INFERENCE
OBSERVING RUN
MERGER RATE

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Abbott, R., Abbott, T. D., Abraham, S., Acernese, F., Ackley, K., Adams, A., Adams, C., Adhikari, R. X., Adya, V. B., Affeldt, C., Agarwal, D., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., Akutsu, T., ... Utina, A. (2021). Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences. Astrophysical Journal Letters, 915(1), Article L5. https://doi.org/10.3847/2041-8213/ac082e

@article{a52ae7cef5c343e5b6d83058b3d6b28b,

title = "Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences",

abstract = "We report the observation of gravitational waves from two compact binary coalescences in LIGO's and Virgo's third observing run with properties consistent with neutron star-black hole (NSBH) binaries. The two events are named GW200105_162426 and GW200115_042309, abbreviated as GW200105 and GW200115; the first was observed by LIGO Livingston and Virgo and the second by all three LIGO-Virgo detectors. The source of GW200105 has component masses 8.9(-1.5)(+1.2) and 1.9(-0.2)(+0.3)M(circle dot), whereas the source of GW200115 has component masses 5.7(-2.1)(+1.8) and 1.5(-0.3)(+0.7)M(circle dot) (all measurements quoted at the 90% credible level). The probability that the secondary's mass is below the maximal mass of a neutron star is 89%-96% and 87%-98%, respectively, for GW200105 and GW200115, with the ranges arising from different astrophysical assumptions. The source luminosity distances are 280(-110)(+110) and 300(-100)(+150) Mpc, respectively. The magnitude of the primary spin of GW200105 is less than 0.23 at the 90% credible level, and its orientation is unconstrained. For GW200115, the primary spin has a negative spin projection onto the orbital angular momentum at 88% probability. We are unable to constrain the spin or tidal deformation of the secondary component for either event. We infer an NSBH merger rate density of 45-(+75)(33) Gpc(-3) yr(-1) when assuming that GW200105 and GW200115 are representative of the NSBH population or 130(-69)(+112) Gpc(-3) yr(-1) under the assumption of a broader distribution of component masses.",

keywords = "COMPACT BINARY COALESCENCES, SPIN-ORBIT MISALIGNMENT, REDUCED-ORDER MODEL, GAMMA-RAY BURSTS, ADVANCED-LIGO, MAXIMUM MASS, HUBBLE CONSTANT, BAYESIAN-INFERENCE, OBSERVING RUN, MERGER RATE",

author = "R. Abbott and Abbott, {T. D.} and S. Abraham and F. Acernese and K. Ackley and A. Adams and C. Adams and Adhikari, {R. X.} and Adya, {V. B.} and C. Affeldt and D. Agarwal and M. Agathos and K. Agatsuma and N. Aggarwal and Aguiar, {O. D.} and L. Aiello and A. Ain and P. Ajith and T. Akutsu and Aleman, {K. M.} and G. Allen and A. Allocca and Altin, {P. A.} and A. Amato and S. Anand and A. Ananyeva and Anderson, {S. B.} and Anderson, {W. G.} and M. Ando and S. Angelova and S. Ansoldi and Antelis, {J. M.} and S. Antier and S. Appert and Koya Arai and Koji Arai and Y. Arai and S. Araki and A. Araya and Araya, {M. C.} and Areeda, {J. S.} and M. Arene and N. Aritomi and N. Arnaud and Aronson, {S. M.} and Arun, {K. G.} and H. Asada and Y. Asali and G. Ashton and Y. Aso and {KAGRA Collaboration} and {LIGO Scientific Collaboration} and {Virgo Collaboration} and Stefan Danilishin and Stefan Hild and Gideon Koekoek and Ayatri Singha and Viola Spagnuolo and Jessica Steinlechner and Sebastian Steinlechner and {van den Brand}, Johannes and Andrei Utina",

year = "2021",

month = jul,

day = "1",

doi = "10.3847/2041-8213/ac082e",

language = "English",

volume = "915",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Abbott, R, Abbott, TD, Abraham, S, Acernese, F, Ackley, K, Adams, A, Adams, C, Adhikari, RX, Adya, VB, Affeldt, C, Agarwal, D, Agathos, M, Agatsuma, K, Aggarwal, N, Aguiar, OD, Aiello, L, Ain, A, Ajith, P, Akutsu, T, Aleman, KM, Allen, G, Allocca, A, Altin, PA, Amato, A, Anand, S, Ananyeva, A, Anderson, SB, Anderson, WG, Ando, M, Angelova, S, Ansoldi, S, Antelis, JM, Antier, S, Appert, S, Arai, K, Arai, K, Arai, Y, Araki, S, Araya, A, Araya, MC, Areeda, JS, Arene, M, Aritomi, N, Arnaud, N, Aronson, SM, Arun, KG, Asada, H, Asali, Y, Ashton, G, Aso, Y, KAGRA Collaboration, LIGO Scientific Collaboration, Virgo Collaboration, Danilishin, S , Hild, S , Koekoek, G , Singha, A , Spagnuolo, V , Steinlechner, J , Steinlechner, S , van den Brand, J & Utina, A 2021, 'Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences', Astrophysical Journal Letters, vol. 915, no. 1, L5. https://doi.org/10.3847/2041-8213/ac082e

TY - JOUR

T1 - Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences

AU - Abbott, R.

AU - Abbott, T. D.

AU - Abraham, S.

AU - Acernese, F.

AU - Ackley, K.

AU - Adams, A.

AU - Adams, C.

AU - Adhikari, R. X.

AU - Adya, V. B.

AU - Affeldt, C.

AU - Agarwal, D.

AU - Agathos, M.

AU - Agatsuma, K.

AU - Aggarwal, N.

AU - Aguiar, O. D.

AU - Aiello, L.

AU - Ain, A.

AU - Ajith, P.

AU - Akutsu, T.

AU - Aleman, K. M.

AU - Allen, G.

AU - Allocca, A.

AU - Altin, P. A.

AU - Amato, A.

AU - Anand, S.

AU - Ananyeva, A.

AU - Anderson, S. B.

AU - Anderson, W. G.

AU - Ando, M.

AU - Angelova, S.

AU - Ansoldi, S.

AU - Antelis, J. M.

AU - Antier, S.

AU - Appert, S.

AU - Arai, Koya

AU - Arai, Koji

AU - Arai, Y.

AU - Araki, S.

AU - Araya, A.

AU - Araya, M. C.

AU - Areeda, J. S.

AU - Arene, M.

AU - Aritomi, N.

AU - Arnaud, N.

AU - Aronson, S. M.

AU - Arun, K. G.

AU - Asada, H.

AU - Asali, Y.

AU - Ashton, G.

AU - Aso, Y.

AU - KAGRA Collaboration

AU - LIGO Scientific Collaboration

AU - Virgo Collaboration

AU - Danilishin, Stefan

AU - Hild, Stefan

AU - Koekoek, Gideon

AU - Singha, Ayatri

AU - Spagnuolo, Viola

AU - Steinlechner, Jessica

AU - Steinlechner, Sebastian

AU - van den Brand, Johannes

AU - Utina, Andrei

PY - 2021/7/1

Y1 - 2021/7/1

N2 - We report the observation of gravitational waves from two compact binary coalescences in LIGO's and Virgo's third observing run with properties consistent with neutron star-black hole (NSBH) binaries. The two events are named GW200105_162426 and GW200115_042309, abbreviated as GW200105 and GW200115; the first was observed by LIGO Livingston and Virgo and the second by all three LIGO-Virgo detectors. The source of GW200105 has component masses 8.9(-1.5)(+1.2) and 1.9(-0.2)(+0.3)M(circle dot), whereas the source of GW200115 has component masses 5.7(-2.1)(+1.8) and 1.5(-0.3)(+0.7)M(circle dot) (all measurements quoted at the 90% credible level). The probability that the secondary's mass is below the maximal mass of a neutron star is 89%-96% and 87%-98%, respectively, for GW200105 and GW200115, with the ranges arising from different astrophysical assumptions. The source luminosity distances are 280(-110)(+110) and 300(-100)(+150) Mpc, respectively. The magnitude of the primary spin of GW200105 is less than 0.23 at the 90% credible level, and its orientation is unconstrained. For GW200115, the primary spin has a negative spin projection onto the orbital angular momentum at 88% probability. We are unable to constrain the spin or tidal deformation of the secondary component for either event. We infer an NSBH merger rate density of 45-(+75)(33) Gpc(-3) yr(-1) when assuming that GW200105 and GW200115 are representative of the NSBH population or 130(-69)(+112) Gpc(-3) yr(-1) under the assumption of a broader distribution of component masses.

AB - We report the observation of gravitational waves from two compact binary coalescences in LIGO's and Virgo's third observing run with properties consistent with neutron star-black hole (NSBH) binaries. The two events are named GW200105_162426 and GW200115_042309, abbreviated as GW200105 and GW200115; the first was observed by LIGO Livingston and Virgo and the second by all three LIGO-Virgo detectors. The source of GW200105 has component masses 8.9(-1.5)(+1.2) and 1.9(-0.2)(+0.3)M(circle dot), whereas the source of GW200115 has component masses 5.7(-2.1)(+1.8) and 1.5(-0.3)(+0.7)M(circle dot) (all measurements quoted at the 90% credible level). The probability that the secondary's mass is below the maximal mass of a neutron star is 89%-96% and 87%-98%, respectively, for GW200105 and GW200115, with the ranges arising from different astrophysical assumptions. The source luminosity distances are 280(-110)(+110) and 300(-100)(+150) Mpc, respectively. The magnitude of the primary spin of GW200105 is less than 0.23 at the 90% credible level, and its orientation is unconstrained. For GW200115, the primary spin has a negative spin projection onto the orbital angular momentum at 88% probability. We are unable to constrain the spin or tidal deformation of the secondary component for either event. We infer an NSBH merger rate density of 45-(+75)(33) Gpc(-3) yr(-1) when assuming that GW200105 and GW200115 are representative of the NSBH population or 130(-69)(+112) Gpc(-3) yr(-1) under the assumption of a broader distribution of component masses.

KW - COMPACT BINARY COALESCENCES

KW - SPIN-ORBIT MISALIGNMENT

KW - REDUCED-ORDER MODEL

KW - GAMMA-RAY BURSTS

KW - ADVANCED-LIGO

KW - MAXIMUM MASS

KW - HUBBLE CONSTANT

KW - BAYESIAN-INFERENCE

KW - OBSERVING RUN

KW - MERGER RATE

U2 - 10.3847/2041-8213/ac082e

DO - 10.3847/2041-8213/ac082e

M3 - Article

SN - 2041-8205

VL - 915

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L5

ER -

Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences

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Keywords

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