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Northern Sky Survey for Gamma-ray Point Sources in 100 TeV Region with the Tibet Air Shower Array
- Source :
- Nuclear Physics B - Proceedings Supplements. :431-434
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- We searched for steady 100 TeV gamma-ray point sources from −10° to +70° in declination based on six year data obtained from Nov. 1999 to Nov. 2005 by the Tibet air shower array. No new source was found and no significant excess of events could be detected from known TeV sources. We set flux upper limits above 100 TeV on several nearby objects located inside Our Galaxy. All of them are slightly higher than extrapolation from lower energies by a factor of 1 to 20. Our new project named Tibet MD will improve our sensitivity by a factor of ∼10 in this energy region. We would discover ∼10 new sources and be able to measure cutoff energy of known and unknown sources, which might lead to identification of the origin of cosmic rays.
- Subjects :
- Physics
Nuclear and High Energy Physics
Astrophysics::High Energy Astrophysical Phenomena
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Astrophysics::Instrumentation and Methods for Astrophysics
Gamma ray
Extrapolation
Flux
Astronomy
Cosmic ray
Astrophysics
Declination
Atomic and Molecular Physics, and Optics
Galaxy
Air shower
Sky
media_common
Subjects
Details
- ISSN :
- 09205632
- Database :
- OpenAIRE
- Journal :
- Nuclear Physics B - Proceedings Supplements
- Accession number :
- edsair.doi...........7b9096dd53118ba9c0f15735bfd3f939