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Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15
Feng L(冯雷); Yuan Q(袁强); Yin PF(殷鹏飞); 毕效军;Feng, L; Yuan, Q; Yin, PF; Bi, XJ; Li, MZ
2012
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
期号4页码:30
摘要The globular clusters are probably good targets for dark matter (DM) searches in gamma-rays due to the possible adiabatic contraction of DM by baryons. In this work we analyse the three-year data collected by Fermi Large Area Telescope of globular clusters NGC 6388 and M 15 to search for possible DM signals. For NGC 6388 the detection of gamma-ray emission was reported by Fermi collaboration, which is consistent with the emission of a population of millisecond pulsars. The spectral shape of NGC 6388 is also shown to be consistent with a DM contribution if assuming the annihilation final state is b (b) over bar. No significant gamma-ray emission from M 15 is observed. We give the upper limits of DM contribution to gamma-ray emission in both NGC 6388 and M 15, for annihilation final states b (b) over bar, W+W-, mu(+)mu(-), tau(+)tau(-) and monochromatic line. The constraints are stronger than that derived from observation of dwarf galaxies by Fermi.
关键词dark matter theory gamma ray experiments
学科领域Astronomy & Astrophysics; Physics
DOI10.1088/1475-7516/2012/04/030
收录类别SCI
WOS记录号WOS:000303665000030
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被引频次:5[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/311005/224389
专题粒子天体物理中心
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Feng L,Yuan Q,Yin PF,et al. Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2012(4):30.
APA 冯雷.,袁强.,殷鹏飞.,毕效军;Feng, L.,Yuan, Q.,...&Li, MZ.(2012).Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),30.
MLA 冯雷,et al."Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2012):30.
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