학술논문
Search for Subsolar-Mass Binaries in the First Half of Advanced LIGO’s and Advanced Virgo’s Third Observing Run
Document Type
article
Author
Abbott, R; Abbott, TD; Acernese, F; Ackley, K; Adams, C; Adhikari, N; Adhikari, RX; Adya, VB; Affeldt, C; Agarwal, D; Agathos, M; Agatsuma, K; Aggarwal, N; Aguiar, OD; Aiello, L; Ain, A; Ajith, P; Albanesi, S; Allocca, A; Altin, PA; Amato, A; Anand, C; Anand, S; Ananyeva, A; Anderson, SB; Anderson, WG; Andrade, T; Andres, N; Andrić, T; Angelova, SV; Ansoldi, S; Antelis, JM; Antier, S; Appert, S; Arai, K; Araya, MC; Areeda, JS; Arène, M; Arnaud, N; Aronson, SM; Arun, KG; Asali, Y; Ashton, G; Assiduo, M; Aston, SM; Astone, P; Aubin, F; Austin, C; Babak, S; Badaracco, F; Bader, MKM; Badger, C; Bae, S; Baer, AM; Bagnasco, S; Bai, Y; Baird, J; Ball, M; Ballardin, G; Ballmer, SW; Balsamo, A; Baltus, G; Banagiri, S; Bankar, D; Barayoga, JC; Barbieri, C; Barish, BC; Barker, D; Barneo, P; Barone, F; Barr, B; Barsotti, L; Barsuglia, M; Barta, D; Bartlett, J; Barton, MA; Bartos, I; Bassiri, R; Basti, A; Bawaj, M; Bayley, JC; Baylor, AC; Bazzan, M; Bécsy, B; Bedakihale, VM; Bejger, M; Belahcene, I; Benedetto, V; Beniwal, D; Bennett, TF; Bentley, JD; BenYaala, M; Bergamin, F; Berger, BK; Bernuzzi, S; Berry, CPL; Bersanetti, D; Bertolini, A; Betzwieser, J; Beveridge, D
Source
Physical Review Letters. 129(6)
Subject
Language
Abstract
We report on a search for compact binary coalescences where at least one binary component has a mass between 0.2 M_{⊙} and 1.0 M_{⊙} in Advanced LIGO and Advanced Virgo data collected between 1 April 2019 1500 UTC and 1 October 2019 1500 UTC. We extend our previous analyses in two main ways: we include data from the Virgo detector and we allow for more unequal mass systems, with mass ratio q≥0.1. We do not report any gravitational-wave candidates. The most significant trigger has a false alarm rate of 0.14 yr^{-1}. This implies an upper limit on the merger rate of subsolar binaries in the range [220-24200] Gpc^{-3} yr^{-1}, depending on the chirp mass of the binary. We use this upper limit to derive astrophysical constraints on two phenomenological models that could produce subsolar-mass compact objects. One is an isotropic distribution of equal-mass primordial black holes. Using this model, we find that the fraction of dark matter in primordial black holes in the mass range 0.2 M_{⊙}