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OBSERVATION OF TeV GAMMA RAYS FROM THE FERMI BRIGHT GALACTIC SOURCES WITH THE TIBET AIR SHOWER ARRAY
Tibet ASGamma Collaboration
2010
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号709期号:1页码:L6-L10
通讯作者Amenomori, M (reprint author), Hirosaki Univ, Dept Phys, Hirosaki, Aomori 0368561, Japan.
摘要Using the Tibet-III air shower array, we search for TeV gamma-rays from 27 potential Galactic sources in the early list of bright sources obtained by the Fermi Large Area Telescope at energies above 100 MeV. Among them, we observe seven sources instead of the expected 0.61 sources at a significance of 2 sigma or more excess. The chance probability from Poisson statistics would be estimated to be 3.8 x 10(-6). If the excess distribution observed by the Tibet-III array has a density gradient toward the Galactic plane, the expected number of sources may be enhanced in chance association. Then, the chance probability rises slightly, to 1.2 x 10(-5), based on a simple Monte Carlo simulation. These low chance probabilities clearly show that the Fermi bright Galactic sources have statistically significant correlations with Te gamma-ray excesses. We also find that all seven sources are associated with pulsars, and six of them are coincident with sources detected by the Milagro experiment at a significance of 3 sigma or more at the representative energy of 35 TeV. The significance maps observed by the Tibet-III air shower array around the Fermi sources, which are coincident with the Milagro >= 3 sigma sources, are consistent with the Milagro observations. This is the first result of the northern sky survey of the Fermi bright Galactic sources in the TeV region.
关键词CRAB-NEBULA SOURCE LIST EMISSION MILAGRO SEARCH PULSAR
学科领域Astronomy & Astrophysics
DOI10.1088/2041-8205/709/1/L6
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000273310000012
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212922
专题实验物理中心
作者单位中国科学院高能物理研究所
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Tibet ASGamma Collaboration. OBSERVATION OF TeV GAMMA RAYS FROM THE FERMI BRIGHT GALACTIC SOURCES WITH THE TIBET AIR SHOWER ARRAY[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,709(1):L6-L10.
APA Tibet ASGamma Collaboration.(2010).OBSERVATION OF TeV GAMMA RAYS FROM THE FERMI BRIGHT GALACTIC SOURCES WITH THE TIBET AIR SHOWER ARRAY.ASTROPHYSICAL JOURNAL LETTERS,709(1),L6-L10.
MLA Tibet ASGamma Collaboration."OBSERVATION OF TeV GAMMA RAYS FROM THE FERMI BRIGHT GALACTIC SOURCES WITH THE TIBET AIR SHOWER ARRAY".ASTROPHYSICAL JOURNAL LETTERS 709.1(2010):L6-L10.
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