@article{4bdaa7fda13b4dc6aa8bb65d6174dedf,

title = "Search for Subsolar-Mass Ultracompact Binaries in Advanced LIGO's First Observing Run",

abstract = "We present the first Advanced LIGO and Advanced Virgo search for ultracompact binary systems with component masses between 0.2 M-1.0 M using data taken between September 12, 2015 and January 19, 2016. We find no viable gravitational wave candidates. Our null result constrains the coalescence rate of monochromatic (delta function) distributions of nonspinning (0.2 M, 0.2 M) ultracompact binaries to be less than 1.0×106 Gpc-3 yr-1 and the coalescence rate of a similar distribution of (1.0 M, 1.0 M) ultracompact binaries to be less than 1.9×104 Gpc-3 yr-1 (at 90% confidence). Neither black holes nor neutron stars are expected to form below ∼1 M through conventional stellar evolution, though it has been proposed that similarly low mass black holes could be formed primordially through density fluctuations in the early Universe and contribute to the dark matter density. The interpretation of our constraints in the primordial black hole dark matter paradigm is highly model dependent; however, under a particular primordial black hole binary formation scenario we constrain monochromatic primordial black hole populations of 0.2 M to be less than 33% of the total dark matter density and monochromatic populations of 1.0 M to be less than 5% of the dark matter density. The latter strengthens the presently placed bounds from microlensing surveys of massive compact halo objects (MACHOs) provided by the MACHO and EROS Collaborations.",

author = "{LIGO Scientific Collaboration and Virgo Collaborations} and Abbott, {B. P.} and R. Abbott and Abbott, {T. D.} and F. Acernese and K. Ackley and C. Adams and T. Adams and P. Addesso and Adhikari, {R. X.} and Adya, {V. B.} and C. Affeldt and B. Agarwal and M. Agathos and K. Agatsuma and N. Aggarwal and Aguiar, {O. D.} and L. Aiello and A. Ain and P. Ajith and B. Allen 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 Arun, {K. G.} and S. Ascenzi and G. Ashton and M. Ast and Aston, {S. M.} and P. Astone and Atallah, {D. V.} and F. Aubin and P. Aufmuth and C. Aulbert and K. Aultoneal and C. Austin 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 Batch, {J. C.} and M. Bawaj and Bayley, {J. C.} and M. Bazzan and B. B{\'e}csy and C. Beer and M. Bejger and I. Belahcene and Bell, {A. S.} and D. Beniwal and M. Bensch 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 Bilenko, {I. A.} and Bilgili, {S. A.} and G. Billingsley and Billman, {C. R.} 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 J. Blackman and Blair, {C. D.} and Blair, {D. G.} and Blair, {R. M.} and S. Bloemen and O. Bock and N. Bode and M. Boer and Y. Boetzel and G. Bogaert and A. Bohe 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 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 Buchanan, {C. C.} 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 M. Canepa and P. Canizares and Cannon, {K. C.} and H. Cao and J. Cao and Capano, {C. D.} and E. Capocasa and F. Carbognani and S. Caride and Carney, {M. F.} and {Casanueva Diaz}, J. and C. Casentini and S. Caudill and M. Cavagli{\`a} and F. Cavalier and R. Cavalieri and G. Cella and Cepeda, {C. B.} and P. Cerd{\'a}-Dur{\'a}n and G. Cerretani and E. Cesarini and O. Chaibi and Chamberlin, {S. J.} and M. Chan and S. Chao and P. Charlton and E. Chase and E. Chassande-Mottin and D. Chatterjee and Cheeseboro, {B. D.} and Chen, {H. Y.} and X. Chen and Y. Chen and Cheng, {H. P.} and Chia, {H. Y.} and A. Chincarini and A. Chiummo and T. Chmiel and Cho, {H. S.} and M. Cho and Chow, {J. H.} and N. Christensen and Q. Chu and Chua, {A. J.K.} and S. Chua and Chung, {K. W.} and S. Chung and G. Ciani and Ciobanu, {A. A.} and R. Ciolfi and F. Cipriano and Cirelli, {C. E.} 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 A. Colla 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 Coward, {D. M.} and Howell, {E. J.} and L. Ju and McCann, {J. J.} and Page, {M. A.} and Slaven-Blair, {T. J.} and {Van Heijningen}, {J. V.} and L. Wen and J. Zhang and C. Zhao and Zhu, {X. J.}",

year = "2018",

month = dec,

day = "7",

doi = "10.1103/PhysRevLett.121.231103",

language = "English",

volume = "121",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}