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Implication for the core collapse supernova rate from 21 years of data of the Large Volume Detector

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arxiv 1411.1709 v2 pith:4UMMCQZO submitted 2014-11-06 astro-ph.HE astro-ph.IM

Implication for the core collapse supernova rate from 21 years of data of the Large Volume Detector

N.Y. Agafonova , M. Aglietta , P. Antonioli , V.V. Ashikhmin , G. Badino , G. Bari , R. Bertoni , E. Bressan
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G.Bruno V.L.Dadykin E.A. Dobrynina R.I. Enikeev W. Fulgione P. Galeotti M. Garbini P.L. Ghia P. Giusti F. Gomez E. Kemp A.S. Malgin A. Molinario R. Persiani I.A. Pless A. Porta V.G. Ryasny O.G. Ryazhskaya O. Saavedra G. Sartorelli I.R. Shakiryanova M. Selvi G.C. Trinchero C. Vigorito V.F. Yakushev G.T. Zatsepin A. Zichichi
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The Large Volume Detector (LVD) has been continuously taking data since 1992 at the INFN Gran Sasso National Laboratory. LVD is sensitive to neutrino bursts from gravitational stellar collapses with full detection probability over the Galaxy. We have searched for neutrino bursts in LVD data taken in 7335 days of operation. No evidence of neutrino signals has been found between June 1992 and December 2013. The 90% C.L. upper limit on the rate of core-collapse and failed supernova explosions out to distances of 25 kpc is found to be 0.114/y.

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