Upper limits on gravitational-wave bursts radiated from stellar-core collapses in our galaxy

Masaki Ando*, Tomomi Akutsu, Tomotada Akutsu, Koji Arai, Youichi Aso, Mitsuhiro Fukushima, Kazuhiro Hayama, Nobuyuki Kanda, Kazuhiro Kondo, Norikatsu Mio, Shinji Miyoki, Shigenori Moriwaki, Shigeo Nagano, Shuichi Sato, Masaru Shibata, Hideyuki Tagoshi, Hirotaka Takahashi, Ryutaro Takahashi, Daisuke Tatsumi, Yoshiki TsunesadaToshitaka Yamazaki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


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%.

Original languageEnglish
JournalClassical and Quantum Gravity
Issue number18
Publication statusPublished - 2005 Sept 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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