Update To 2005 Of The Results Of The Search For V Bursts From Gravitational Stellar Collapse With Lvd

Proceedings of the 29th International Cosmic Ray Conference, Vol 5: OG 2.5, 2.6 & 2.7(2005)

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摘要
The Large Volume Detector LVD (Gran Sasso National Laboratory, Italy) is a neutrino scintillator observatory monitoring the Galaxy since 1992, searching for low energy neutrino bursts from gravitational stellar collapses. We present the status of the detector that, after reaching its final active mass of 1000 t in 2001, has been recently upgraded to increase its sensitivity at lower energies. We update the search for neutrino bursts by including the last two years of data. No candidates have been detected over all the thirteen years of observation: the resulting 90% c.l. upper limit to the rate of Gravitational Stellar Collapse (GSC) in the Galaxy is 0.21 event (.) y(-1).
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