High energy neutrino astronomy using upward-going muons in Super-Kamiokande-I
| Autor: | Yoshihisa Obayashi, Masayuki Nakahata, Haruki Nishino, Katsuki Hiraide, Steven Dazeley, Christopher Walter, Takuya Hasegawa, Yasuo Takeuchi, Takashi Iida, Yoichiro Suzuki, Eric Thrane, Masashi Yokoyama, Yoshinari Hayato, Jennifer Raaf, Edward Kearns, Joanna Zalipska, Andrew Stachyra, Alec Habig, Richard Jeffrey Wilkes, Byeongsu Yang, Mark Vagins, Yuichi Oyama |
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| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Physics
Muon Astrophysics::High Energy Astrophysical Phenomena Detector Astronomy and Astrophysics Astrophysics Galaxy High Energy Physics - Experiment Interstellar medium Space and Planetary Science High Energy Physics::Experiment Neutrino Neutrino astronomy Super-Kamiokande Energy (signal processing) |
| Popis: | We present the results from several studies used to search for astrophysical sources of high-energy neutrinos using the Super-Kamiokande-I (April 1996 to July 2001) neutrino-induced upward-going muon data. The data set consists of 2359 events with minimum energy 1.6 GeV, of which 1892 are through-going and 467 stop within the detector. The results of several independent analyses are presented, including searches for point sources using directional and temporal information and a search for signatures of cosmic-ray interactions with the interstellar medium in the upward-going muons. No statistically significant evidence for point sources or any diffuse flux from the plane of the galaxy was found, so specific limits on fluxes from likely point sources are calculated. The 90% C.L. upper limits on upward-going muon flux from astronomical sources which are located in the southern hemisphere and always under the horizon for Super-Kamiokande are 1~4x10^{-15} cm^{-2} s^{-1}. Comment: 8 pages, 6 figures, submitted to ApJ v2 clarifies angular cone sizes used in response to referee comments. Please send comments, clarifications, etc. to Alec Habig (ahabig@umn.edu) |
| Databáze: | OpenAIRE |
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