@article{46de980ed9e54ff6b42ba70b526ee549,

title = "Directional limits on persistent gravitational waves from advanced LIGO's first observing run",

abstract = "We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90% confidence. For broadband point sources, we report upper limits on the gravitational wave energy flux per unit frequency in the range Fα,Θ(f)<(0.1-56)×10-8 erg cm-2 s-1 Hz-1(f/25 Hz)α-1 depending on the sky location Θ and the spectral power index α. For extended sources, we report upper limits on the fractional gravitational wave energy density required to close the Universe of Ω(f,Θ)<(0.39-7.6)×10-8 sr-1(f/25 Hz)α depending on Θ and α. Directed searches for narrowband gravitational waves from astrophysically interesting objects (Scorpius X-1, Supernova 1987 A, and the Galactic Center) yield median frequency-dependent limits on strain amplitude of h0<(6.7,5.5, and 7.0)×10-25, respectively, at the most sensitive detector frequencies between 130-175 Hz. This represents a mean improvement of a factor of 2 across the band compared to previous searches of this kind for these sky locations, considering the different quantities of strain constrained in each case.",

author = "{LIGO Scientific Collaboration and Virgo Collaboration} and Abbott, {B. P.} and R. Abbott and Abbott, {T. D.} and Abernathy, {M. R.} 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 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 A. Allocca and Altin, {P. A.} and A. Ananyeva and Anderson, {S. B.} and Anderson, {W. G.} and S. Appert and K. Arai and Araya, {M. C.} and Areeda, {J. S.} and N. Arnaud and Arun, {K. G.} and S. Ascenzi and G. Ashton and M. Ast and Aston, {S. M.} and P. Astone and P. Aufmuth and C. Aulbert and A. Avila-Alvarez and S. Babak and P. Bacon and Bader, {M. K.M.} and Baker, {P. T.} and F. Baldaccini and G. Ballardin and Ballmer, {S. W.} and Barayoga, {J. C.} and Barclay, {S. E.} and Barish, {B. C.} and D. Barker 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 C. Baune and V. Bavigadda and M. Bazzan and C. Beer and M. Bejger and I. Belahcene and M. Belgin and Bell, {A. S.} and Berger, {B. K.} and G. Bergmann and Berry, {C. P.L.} and D. Bersanetti and A. Bertolini and J. Betzwieser and S. Bhagwat and R. Bhandare and Bilenko, {I. A.} and G. Billingsley and Billman, {C. R.} and J. Birch and R. Birney and O. Birnholtz and S. Biscans and Biscoveanu, {A. S.} and A. Bisht and M. Bitossi and C. Biwer 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 M. Boer and G. Bogaert and A. Bohe and F. Bondu and R. Bonnand and Boom, {B. A.} and R. Bork and V. Boschi and S. Bose and Y. Bouffanais and A. Bozzi and C. Bradaschia and Brady, {P. R.} and Braginsky, {V. B.} and M. Branchesi and Brau, {J. E.} and T. Briant and A. Brillet and M. Brinkmann and V. Brisson and P. Brockill and Broida, {J. E.} and Brooks, {A. F.} and Brown, {D. A.} and Brown, {D. D.} and Brown, {N. M.} 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 W. Campbell and M. Canepa and Cannon, {K. C.} and H. Cao and J. Cao and Capano, {C. D.} and E. Capocasa and F. Carbognani and S. Caride 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 {Cerboni Baiardi}, L. and G. Cerretani and E. Cesarini and Chamberlin, {S. J.} and M. Chan and S. Chao and P. Charlton and E. Chassande-Mottin and Cheeseboro, {B. D.} and Chen, {H. Y.} and Y. Chen and Cheng, {H. P.} 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 S. Chung and G. Ciani and F. Clara and Clark, {J. A.} and F. Cleva and C. Cocchieri and E. Coccia and Cohadon, {P. F.} and A. Colla and Collette, {C. G.} and L. Cominsky and M. Constancio and L. Conti and Cooper, {S. J.} and Corbitt, {T. R.} and N. Cornish and A. Corsi and S. Cortese and Costa, {C. A.} and E. Coughlin and Coughlin, {M. W.} and Coughlin, {S. B.} and Coulon, {J. P.} and Countryman, {S. T.} and P. Couvares and Covas, {P. B.} and Cowan, {E. E.} and Coward, {D. M.} and Cowart, {M. J.} and Coyne, {D. C.} and R. Coyne and Creighton, {J. D.E.} and Creighton, {T. D.} and J. Cripe and Crowder, {S. G.} and Cullen, {T. J.} and A. Cumming and L. Cunningham and E. Cuoco and {Dal Canton}, T. and Danilishin, {S. L.} and S. D'Antonio and K. Danzmann and A. Dasgupta and {Da Silva Costa}, {C. F.} and V. Dattilo and I. Dave and M. Davier and Davies, {G. S.} and D. Davis and Daw, {E. J.} and B. Day and R. Day and S. De and D. Debra and G. Debreczeni and J. Degallaix and {De Laurentis}, M. and S. Del{\'e}glise and {Del Pozzo}, W. and T. Denker and T. Dent and V. Dergachev and {De Rosa}, R. and Derosa, {R. T.} and R. Desalvo and J. Devenson and Devine, {R. C.} and S. Dhurandhar and D{\'i}az, {M. C.} and {Di Fiore}, L. and {Di Giovanni}, M. and {Di Girolamo}, T.",

note = "Includes bibliographical references.",

year = "2017",

month = mar,

day = "24",

doi = "10.1103/PhysRevLett.118.121102",

language = "English",

volume = "118",

pages = "1--13",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

}