Observation of the large-scale sidereal anisotropy of the galactic cosmic ray intensity at 300 TeV with the Tibet Air Shower Array

THE TIBET ASγ COLLABORATION

研究成果: Conference contribution

抜粋

We report on the observation of the large-scale sidereal anisotropy of Galactic Cosmic Rays (GCRs) at median energy of ∼300 TeV. With long time and high-stability collection by the Tibet air shower array between October 1995 and February 2010, the data used in this analysis contains 3.1×108 air shower events with a median angular resolution of 0.3. A new anisotropy structure at 300 TeV is revealed, which significantly deviates from the picture of cosmic ray isotropic intensity and is different with previous anisotropy observation at Multi-TeV energy. The dominant feature is an excess region that localized at (α = 271.0, δ = 22.1), with a significance of 7.3σ (pre-trial) or 5.4σ (post-trial) and an optimized smoothing of 29. The maximum relative intensity region with an intensity of ∼ 2.0 × 10 3 is around (α = 255.0 , δ = −13.9), that is close to the highest excess region observed by IceCube at 400 TeV.

元の言語English
ホスト出版物のタイトルProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
出版者Sociedade Brasileira de Fisica
2013-October
ISBN(電子版)9788589064293
出版物ステータスPublished - 2013 1 1
イベント33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
継続期間: 2013 7 22013 7 9

Other

Other33rd International Cosmic Rays Conference, ICRC 2013
Brazil
Rio de Janeiro
期間13/7/213/7/9

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

フィンガープリント Observation of the large-scale sidereal anisotropy of the galactic cosmic ray intensity at 300 TeV with the Tibet Air Shower Array' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    THE TIBET ASγ COLLABORATION (2013). Observation of the large-scale sidereal anisotropy of the galactic cosmic ray intensity at 300 TeV with the Tibet Air Shower Array. : Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 (巻 2013-October). Sociedade Brasileira de Fisica.