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http://hdl.handle.net/20.500.12386/25888
Titolo: | Implication for the Core-collapse Supernova Rate from 21 Years of Data of the Large Volume Detector | Autori: | Agafonova, N. Y. AGLIETTA, MARCO Antonioli, P. Ashikhmin, V. V. Badino, G. Bari, G. Bertoni, R. Bressan, E. BRUNO, GIOVANNI Dadykin, V. L. Dobrynina, E. A. Enikeev, R. I. FULGIONE, VALTER Galeotti, P. Garbini, M. Ghia, P. L. Giusti, P. Gomez, F. Kemp, E. Malgin, A. S. Molinario, A. Persiani, R. Pless, I. A. Porta, A. Ryasny, V. G. Ryazhskaya, O. G. Saavedra, O. Sartorelli, G. Shakiryanova, I. R. Selvi, M. TRINCHERO, GIAN CARLO Vigorito, C. Yakushev, V. F. Zichichi, A. LVD Collaboration |
Data pubblicazione: | 2015 | Rivista: | THE ASTROPHYSICAL JOURNAL LETTERS | Numero: | 802 | Fascicolo: | 1 | Da pagina:: | 47 | Abstract: | The Large Volume Detector (LVD) has been continuously taking data since 1992 at the INFN Gran Sasso National Laboratory. The 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 over 7,335 days of operation. No evidence of neutrino signals has been found between 1992 June and 2013 December. 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 yr<SUP>-1</SUP>. | Acknowledgments: | The authors wish to thank all of the staff of the Gran Sasso National Laboratory for their constant support and cooperation during all these years. The successful installation, commissioning, and operation of LVD would not have been possible without the commitment and assistance of the technical staff of all LVD institutions. We are grateful to Francesco Vissani for innumerable discussions and clarifications on various physical aspects of the core-collapse supernova problem. One of the authors (W.F.) is indebted to Pio Picchi for the idea to express the event significance in terms of background frequency, to Giulia Pagliaroli for the suggestion to expand the interpretation of our results to failed supernovae, and to Marco Grassi and the Gran Sasso Scientific Committee for constructive discussions. Finally, some of the scientists who imagined, realized, and contributed to the LVD experiment are not with us anymore. We wish to remember here in particular Carlo Castagnoli, Gianni Navarra, and Georgiy T. Zatsepin: we are left with their memory and their teachings. | URI: | http://hdl.handle.net/20.500.12386/25888 | URL: | https://iopscience.iop.org/article/10.1088/0004-637X/802/1/47 | ISSN: | 2041-8205 | DOI: | 10.1088/0004-637X/802/1/47 | Bibcode ADS: | 2015ApJ...802...47A | Fulltext: | open |
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