@article{e3fc3f603eb5486bb52d92353d1cf26a,

title = "Search for sub-solar 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 1.0×10^{6} 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 1.9×10^{4} 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 Collaboration} 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 Carney, {M F} and P Charlton and Y Chen and H-P Cheng and Cho, {H S} and N Christensen and Clark, {J A} and D Cohen and Downes, {T P} and Edwards, {M C} and M Evans and Evans, {T M} and Fisher, {R P} and M Fletcher and J George and A Grant and C Gray and Green, {A C} and R Green and A Gupta and Hall, {E D} and J Healy and K Holt and P Hopkins and Johnson, {D S} and Jones, {D I} and R Jones and R Kennedy and I Khan and S Khan and Kim, {J C} and K Kim and R Kumar and S Kumar and Lee, {C H} and Lee, {H W} and Lee, {H W} and Lee, {H W} and K Lee and J Li and X Li and J Liu and X Liu and Macleod, {D M} and Martin, {R M} and M Mehmet and H Miao and A Miller and A Miller and Miller, {B B} and J Miller and J Mills and Muir, {A W} and D Mukherjee and Murray, {P G} and Nelson, {T J N} and Ng, {K Y} and Nguyen, {T T} and Owen, {B J} and Page, {M A} and Pratt, {J W W} and B Rajbhandari and L Rei and S Reid and Ross, {M P} and K Ryan and J Scott and L Shao and B Smith and Smith, {J R} and Smith, {R J E} and Stevenson, {S P} and R Stone and Sutton, {P J} and Taylor, {J A} and R Taylor and Thomas, {E G} and M Thomas and Wade, {A R} and Wade, {L E} and M Wade and M Walker and L Wallace and S Walsh and G Wang and H Wang and Wang, {J Z} and Wang, {Y F} and Ward, {R L} and D Williams and Williams, {R D} and Wright, {J L} and W Yam and J Zhang and L Zhang and Y-H Zhang and Z Zhou and Zhu, {X J}",

note = "Includes bibliographical references.",

year = "2018",

month = dec,

day = "7",

doi = "10.1103/PhysRevLett.121.231103",

language = "English",

volume = "121",

pages = "1--12",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}