Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cqgra..22s1283a&link_type=abstract
Classical and Quantum Gravity, Volume 22, Issue 18, pp. S1283-S1291 (2005).
Astronomy and Astrophysics
Astronomy
5
Scientific paper
We present the results of observations with the TAMA300 gravitational-wave detector, targeting burst signals from stellar-core collapse events. We used an excess-power filter to extract gravitational-wave candidates, and developed two methods to reduce fake events caused by non-stationary noises of the detector. These analysis methods were applied to real data from the TAMA300 interferometric gravitational wave detector. We compared the data-processed results with those of a Monte Carlo simulation with an assumed galactic-event distribution model and with burst waveforms expected from numerical simulations of stellar-core collapses, in order to interpret the event candidates from an astronomical viewpoint. We set an upper limit of 5.0 × 103 events s-1 on the burst gravitational-wave event rate in our galaxy with a confidence level of 90%.
Akutsu Tomomi
Akutsu Tomotada
Ando Masaki
Arai Koji
Aso Youichi
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