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Abadie, J. [Author]; Affeldt, Christoph [Author]; Allen, Bruce [Author]; Aufmuth, Peter [Author]; Aulbert, C. [Author]; Ballardin, G. [Author]; Bauchrowitz, J. [Author]; Bertolini, A. [Author]; Bock, O. [Author]; Bogan, C. [Author]; Born, Michael [Author]; Breyer, J. [Author]; Brinkmann, M. [Author]; Britzger, M. [Author]; Dahl, K. [Author]; Danzmann, Karsten [Author]; Di Palma, Irene [Author]; Eberle, Tobias [Author]; Fehrmann, H. [Author]; Frede, M. [Author]; Friedrich, Daniel [Author]; Goetz, E. [Author]; Goßler, S. [Author]; Graef, C. [Author]; [...]

All-sky search for periodic gravitational waves in the full S5 LIGO data - [published Version]

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  • Media type: Text; E-Article
  • Title: All-sky search for periodic gravitational waves in the full S5 LIGO data
  • Contributor: Abadie, J. [Author]; Affeldt, Christoph [Author]; Allen, Bruce [Author]; Aufmuth, Peter [Author]; Aulbert, C. [Author]; Ballardin, G. [Author]; Bauchrowitz, J. [Author]; Bertolini, A. [Author]; Bock, O. [Author]; Bogan, C. [Author]; Born, Michael [Author]; Breyer, J. [Author]; Brinkmann, M. [Author]; Britzger, M. [Author]; Dahl, K. [Author]; Danzmann, Karsten [Author]; Di Palma, Irene [Author]; Eberle, Tobias [Author]; Fehrmann, H. [Author]; Frede, M. [Author]; Friedrich, Daniel [Author]; Goetz, E. [Author]; Goßler, S. [Author]; Graef, C. [Author]; [...]
  • imprint: College Park, MD : American Physical Society, 2012
  • Published in: Physical Review D 85 (2012), Nr. 2
  • Issue: published Version
  • Language: English
  • DOI: https://doi.org/10.15488/2146; https://doi.org/10.1103/PhysRevD.85.022001
  • ISSN: 2470-0010
  • Keywords: Gravitationswelle ; Gravitational waves
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: We report on an all-sky search for periodic gravitational waves in the frequency band 50–800 Hz and with the frequency time derivative in the range of 0 through −6×10−9 Hz/s. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our Galaxy. After recent improvements in the search program that yielded a 10× increase in computational efficiency, we have searched in two years of data collected during LIGO’s fifth science run and have obtained the most sensitive all-sky upper limits on gravitational-wave strain to date. Near 150 Hz our upper limit on worst-case linearly polarized strain amplitude h0 is 1×10−24, while at the high end of our frequency range we achieve a worst-case upper limit of 3.8×10−24 for all polarizations and sky locations. These results constitute a factor of 2 improvement upon previously published data. A new detection pipeline utilizing a loosely coherent algorithm was able to follow up weaker outliers, increasing the volume of space where signals can be detected by a factor of 10, but has not revealed any gravitational-wave signals. The pipeline has been tested for robustness with respect to deviations from the model of an isolated neutron star, such as caused by a low-mass or long-period binary companion. © 2012 The American Physical Society
  • Access State: Open Access