首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Search for supernova neutrino bursts with the AMANDA detector
Institution:

a Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany

b Bartol Research Institute, University of Delaware, Newark, DE 19716, USA

c Department of Physics, University of Wisconsin, Madison, WI 53706, USA

d Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA

e Department of Physics, University of California, Berkeley, CA 94720, USA

f Fachbereich 8 Physik, BUGH Wuppertal, D-42097 Wuppertal, Germany

g Science Faculty CP230, Brussels Free University, Boulevard du Triomphe, B-1050 Brussels, Belgium

h DESY-Zeuthen, D-15735 Zeuthen, Germany

i Department of Radiation Sciences, Uppsala University, S-75121 Uppsala, Sweden

j Department of Technology, Kalmar University, S-39182 Kalmar, Sweden

k Department of Physics and Astronomy, Universityof Pennsylvania, Philadelphia, PA 19104, USA

l Fysikum, Stockholm University, S-11385 Stockholm, Sweden

m Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

Abstract:The core collapse of a massive star in the Milky Way will produce a neutrino burst, intense enough to be detected by existing underground detectors. The AMANDA neutrino telescope located deep in the South Pole ice can detect MeV neutrinos by a collective rate increase in all photo-multipliers on top of dark noise. The main source of light comes from positrons produced in the CC reaction of anti-electron neutrinos on free protons Image . This paper describes the first supernova search performed on the full sets of data taken during 1997 and 1998 (215 days of live time) with 302 of the detector's optical modules. No candidate events resulted from this search. The performance of the detector is calculated, yielding a 70% coverage of the galaxy with one background fake per year with 90% efficiency for the detector configuration under study. An upper limit at the 90% c.l. on the rate of stellar collapses in the Milky Way is derived, yielding 4.3 events per year. A trigger algorithm is presented and its performance estimated. Possible improvements of the detector hardware are reviewed.
Keywords:AMANDA  Supernova detection  Neutrino  Dark-noise rate
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号