作者
B Abbott, Robert Abbott, Rana Adhikari, Juri Agresti, P Ajith, Bruce Allen, R Amin, SB Anderson, WG Anderson, M Arain, M Araya, H Armandula, M Ashley, S Aston, Peter Aufmuth, Carsten Aulbert, Stanislav Babak, S Ballmer, H Bantilan, BC Barish, C Barker, D Barker, B Barr, Pablo Barriga, MA Barton, K Bayer, K Belczynski, J Betzwieser, PT Beyersdorf, B Bhawal, IA Bilenko, G Billingsley, R Biswas, E Black, K Blackburn, L Blackburn, David Blair, B Bland, Johanna Bogenstahl, L Bogue, Rolf Bork, V Boschi, Sukanta Bose, Patrick R Brady, VB Braginsky, JE Brau, Marc Brinkmann, A Brooks, Duncan A Brown, A Bullington, Alexander Bunkowski, Alessandra Buonanno, Oliver Burmeister, D Busby, RL Byer, L Cadonati, G Cagnoli, JB Camp, J Cannizzo, K Cannon, CA Cantley, J Cao, L Cardenas, Morag M Casey, G Castaldi, C Cepeda, E Chalkey, P Charlton, S Chatterji, Simon Chelkowski, Yanbei Chen, Francesco Chiadini, D Chin, E Chin, J Chow, Nelson Christensen, James Clark, Paul Cochrane, Thomas Cokelaer, Carlo Nicola Colacino, R Coldwell, Roberto Conte, D Cook, Thomas Corbitt, David Coward, D Coyne, Jolien DE Creighton, Teviet D Creighton, RP Croce, DRM Crooks, AM Cruise, A Cumming, J Dalrymple, Erika D’Ambrosio, Karsten Danzmann, Geraint Davies, D Debra, Jerome Degallaix, T Demma, V Dergachev, S Desai, R Desalvo, Sanjeev Dhurandhar, M Díaz, J Dickson, A Di Credico, G Diederichs, Alexander Dietz, EE Doomes, RWP Drever, J-C Dumas, RJ Dupuis, JG Dwyer, P Ehrens, E Espinoza, T Etzel, M Evans, T Evans, Stephen Fairhurst, Y Fan, D Fazi, MM Fejer, Lee S Finn, V Fiumara, N Fotopoulos, Alexander Franzen, KY Franzen, Andreas Freise, R Frey, T Fricke, P Fritschel, VV Frolov, M Fyffe, V Galdi, J Garofoli, Iraj Gholami, JA Giaime, Stefanos Giampanis, KD Giardina, Keisuke Goda, E Goetz, Lisa M Goggin, Gabriela Gonzalez, Stefan Gossler, A Grant, Slawomir Gras, C Gray, M Gray, J Greenhalgh, AM Gretarsson
发表日期
2007/10/29
期刊
Physical Review D
卷号
76
期号
8
页码范围
082003
出版商
American Physical Society
简介
We searched for an anisotropic background of gravitational waves using data from the LIGO S4 science run and a method that is optimized for point sources. This is appropriate if, for example, the gravitational wave background is dominated by a small number of distinct astrophysical sources. No signal was seen. Upper limit maps were produced assuming two different power laws for the source strain power spectrum. For an f− 3 power law and using the 50 Hz to 1.8 kHz band the upper limits on the source strain power spectrum vary between 1.2× 10− 48 Hz− 1 (100 Hz/f) 3 and 1.2× 10− 47 Hz− 1 (100 Hz/f) 3, depending on the position in the sky. Similarly, in the case of constant strain power spectrum, the upper limits vary between 8.5× 10− 49 Hz− 1 and 6.1× 10− 48 Hz− 1. As a side product a limit on an isotropic background of gravitational waves was also obtained. All limits are at the 90% confidence level. Finally …
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B Abbott, R Abbott, R Adhikari, J Agresti, P Ajith… - Physical Review D, 2007