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Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15
Feng, Lei1,2,3; Yuan, Qiang1; Yin, Peng-Fei1; Bi, Xiao-Jun1; Li, Mingzhe2,3
2012-04-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue4Pages:030
AbstractThe 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.
KeywordDark Matter Theory Gamma Ray Experiments
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1475-7516/2012/04/030
WOS KeywordLARGE-AREA TELESCOPE ; GAMMA-RAY EMISSION ; MASS BLACK-HOLE ; DENSITY PROFILE ; SURFACE-DENSITY ; GENERIC MODEL ; COSMIC-RAYS ; MILKY-WAY ; CONSTRAINTS ; GALAXIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000303665000030
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7987
Collection空间目标与碎片观测研究基地
Affiliation1.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
3.Nanjing Univ, Purple Mt Observ, Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Feng, Lei,Yuan, Qiang,Yin, Peng-Fei,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):030.
APA Feng, Lei,Yuan, Qiang,Yin, Peng-Fei,Bi, Xiao-Jun,&Li, Mingzhe.(2012).Search for dark matter signals with Fermi-LAT observation of globular clusters NGC 6388 and M15.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),030.
MLA Feng, Lei,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):030.
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