Search for gravitational waves on short duration in TAMA300 data: stellar core collapse and black hole

Details Search for gravitational waves on short duration in TAMA300 data: stellar core collapse and black hole Search for gravitational waves on short duration in TAMA300 data: stellar core collapse and black hole

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008jphcs.120c2013h&link_type=abstract

Journal of Physics: Conference Series, Volume 120, Issue 3, pp. 032013 (2008).

Physics

Scientific paper

We present in the results of TAMA300 data analysis for short duration gravitational waves. The excess power filter, alternative linear filter (ALF) and TF(time-frequency) clustering methods have been employed for burst gravitational waves from stellar-core collapse, and matched filtering method used for the ringdown gravitational waves from black hole quasi-normal oscillations. The observational range of TAMA for the burst gravitational waves is roughly ~ 1 kpc, and the range for black hole ringdown covers most of our galaxy. We have been developed new method 'time-frequency (TF) clustering' to find the burst waves. This is a TF clustering method on spectrogram (sonogram). Using this method, we can efficiently identify some predicted gravitational wave forms[2] and can exclude typical unstable spike like noises.

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