Upper limits from the LIGO and TAMA detectors on the rate of gravitational-wave bursts

B. Abbott, C.A. Cantley, LIGO Scientific Collaboration, TAMA Collaboration

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

We report on the first joint search for gravitational waves by the TAMA and LIGO collaborations. We looked for millisecond-duration unmodeled gravitational-wave bursts in 473 hr of coincident data collected during early 2003. No candidate signals were found. We set an upper limit of 0.12 events per day on the rate of detectable gravitational-wave bursts, at 90% confidence level. From software simulations, we estimate that our detector network was sensitive to bursts with root-sum-square strain amplitude above approximately 1–3×10−19  Hz−1/2 in the frequency band 700-2000 Hz. We describe the details of this collaborative search, with particular emphasis on its advantages and disadvantages compared to searches by LIGO and TAMA separately using the same data. Benefits include a lower background and longer observation time, at some cost in sensitivity and bandwidth. We also demonstrate techniques for performing coincidence searches with a heterogeneous network of detectors with different noise spectra and orientations. These techniques include using coordinated software signal injections to estimate the network sensitivity, and tuning the analysis to maximize the sensitivity and the livetime, subject to constraints on the background.
LanguageEnglish
Article number122004
Number of pages16
JournalPhysical Review D
Volume72
Issue number12
DOIs
Publication statusPublished - 29 Dec 2005

Fingerprint

LIGO (observatory)
gravitational waves
bursts
sensitivity
detectors
computer programs
noise spectra
estimates
confidence
tuning
injection
bandwidth
costs
simulation

Keywords

  • LIGO
  • gravitational waves
  • observation time

Cite this

Abbott, B. ; Cantley, C.A. ; LIGO Scientific Collaboration ; TAMA Collaboration. / Upper limits from the LIGO and TAMA detectors on the rate of gravitational-wave bursts. In: Physical Review D. 2005 ; Vol. 72, No. 12.
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Upper limits from the LIGO and TAMA detectors on the rate of gravitational-wave bursts. / Abbott, B.; Cantley, C.A.; LIGO Scientific Collaboration; TAMA Collaboration.

In: Physical Review D, Vol. 72, No. 12, 122004, 29.12.2005.

Research output: Contribution to journalArticle

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AU - Cantley, C.A.

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AB - We report on the first joint search for gravitational waves by the TAMA and LIGO collaborations. We looked for millisecond-duration unmodeled gravitational-wave bursts in 473 hr of coincident data collected during early 2003. No candidate signals were found. We set an upper limit of 0.12 events per day on the rate of detectable gravitational-wave bursts, at 90% confidence level. From software simulations, we estimate that our detector network was sensitive to bursts with root-sum-square strain amplitude above approximately 1–3×10−19  Hz−1/2 in the frequency band 700-2000 Hz. We describe the details of this collaborative search, with particular emphasis on its advantages and disadvantages compared to searches by LIGO and TAMA separately using the same data. Benefits include a lower background and longer observation time, at some cost in sensitivity and bandwidth. We also demonstrate techniques for performing coincidence searches with a heterogeneous network of detectors with different noise spectra and orientations. These techniques include using coordinated software signal injections to estimate the network sensitivity, and tuning the analysis to maximize the sensitivity and the livetime, subject to constraints on the background.

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