• Medientyp: Sonstige Veröffentlichung; E-Artikel
  • Titel: First cross-correlation analysis of interferometric and resonant-bar gravitational-wave data for stochastic backgrounds
  • Beteiligte: Abbott, B. [VerfasserIn]; Abbott, R. [VerfasserIn]; Adhikari, R. [VerfasserIn]; Agresti, J. [VerfasserIn]; Ajith, P. [VerfasserIn]; Allen, B. [VerfasserIn]; Amin, R. [VerfasserIn]; Anderson, S.B. [VerfasserIn]; Anderson, W.G. [VerfasserIn]; Arain, M. [VerfasserIn]; Araya, M. [VerfasserIn]; Armandula, H. [VerfasserIn]; Ashley, M. [VerfasserIn]; Aston, S. [VerfasserIn]; Aufmuth, P. [VerfasserIn]; Aulbert, C. [VerfasserIn]; Babak, S. [VerfasserIn]; Ballmer, S. [VerfasserIn]; Bantilan, H. [VerfasserIn]; Barish, B.C. [VerfasserIn]; Barker, C. [VerfasserIn]; Barker, D. [VerfasserIn]; Barr, B. [VerfasserIn]; Barriga, P. [VerfasserIn]; [...]
  • Erschienen: College Park, MD : American Physical Society, 2007
  • Erschienen in: Physical Review D - Particles, Fields, Gravitation and Cosmology 76 (2007), Nr. 2 ; Physical Review D - Particles, Fields, Gravitation and Cosmology
  • Ausgabe: published Version
  • Sprache: Englisch
  • DOI: https://doi.org/10.15488/12056; https://doi.org/10.1103/PhysRevD.76.022001
  • ISSN: 1550-7998
  • Schlagwörter: psi ; rho-pi puzzle ; j/psi ; possible explanation ; decays
  • Entstehung:
  • Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Beschreibung: Data from the LIGO Livingston interferometer and the ALLEGRO resonant-bar detector, taken during LIGO's fourth science run, were examined for cross correlations indicative of a stochastic gravitational-wave background in the frequency range 850-950 Hz, with most of the sensitivity arising between 905 and 925 Hz. ALLEGRO was operated in three different orientations during the experiment to modulate the relative sign of gravitational-wave and environmental correlations. No statistically significant correlations were seen in any of the orientations, and the results were used to set a Bayesian 90% confidence level upper limit of Ωgw(f)≤1.02, which corresponds to a gravitational-wave strain at 915 Hz of 1.5×10-23Hz-1/2. In the traditional units of h1002Ωgw(f), this is a limit of 0.53, 2 orders of magnitude better than the previous direct limit at these frequencies. The method was also validated with successful extraction of simulated signals injected in hardware and software. © 2007 The American Physical Society.
  • Zugangsstatus: Freier Zugang