Experimental upper limit to the galactic stellar-collapse rate

S. T. Dye, J. Annis, R. Becker-Szendy, C. B. Bratton, D. Casper, R. Claus, M. Crouch, S. Errede, W. Gajewski, M. Goldhaber, T. J. Haines, T. W. Jones, D. Kielczewska, W. R. Kropp, J. G. Learned, J. M. Losecco, C. McGrew, J. Matthews, M. S. Mudan, L. R. PriceF. Reines, J. Schultz, S. Seidel, D. Sinclair, H. W. Sobel, J. L. Stone, L. R. Sulak, R. Svoboda, G. Thornton, J. C. Van Der Velde

Research output: Contribution to journalArticlepeer-review

Abstract

A search is made for bursts of low-energy (20-60 MeV) neutrino interactions, signaling stellar core collapse, in a large underground water-Cerenkov detector. Over a period of 5.6 years (2.1 live years) no bursts were observed. A 90%-confidence-level (C.L.) upper limit to the rate of stellar collapse in the Galaxy is set at <1.5 yr-1. A limit of <1.1 stellar collapses per year (90% C.L.) is set for a smaller volume of the Galaxy (10 kpc radius) which includes the Galactic center and >50% of the stars in the Milky Way.

Original languageEnglish (US)
Pages (from-to)2069-2072
Number of pages4
JournalPhysical review letters
Volume62
Issue number18
DOIs
StatePublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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