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A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids
Tsai, Yue-Lin Sming1; Yuan, Qiang2,3; Huang, Xiaoyuan4
2013-03-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Volume0Issue:3Pages:97-100
Corresponding AuthorTsai, YLS (reprint author), Natl Ctr Nucl Res, Hoza 69, PL-00681 Warsaw, Poland. Email: Sming.Tsai@fuw.edu.pl ; yuanq@ihep.ac.cn ; x_huang@bao.ac.cn
AbstractObservation of gamma-rays from dwarf galaxies is an effective way to search for particle dark matter. Using 4-year data of Fermi-LAT observations on a series of Milky Way satellites, we develop a general way to search for the signals from dark matter annihilation in such objects. Instead of giving prior information about the energy spectrum of dark matter annihilation, we bin the Fermi-LAT data into several energy bins and build a likelihood map in the "energy bin - flux" plane. The final likelihood of any spectrum can be easily derived through combining the likelihood of all the energy bins. It gives consistent result with that directly calculated using the Fermi Scientific Tool. This method is very efficient for the study of any specific dark matter models with gamma-rays. We use the new likelihood map with Fermi-LAT 4 year data to fit the parameter space in three representative dark matter models: i) toy dark matter model, ii) effective dark matter operators, and iii) supersymmetric neutralino dark matter.
KeywordDark Matter Detectors Dark Matter Theory Gamma Ray Detectors Gamma Ray Experiments
Subject AreaAstronomy & AstroPhysics, Physics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1475-7516/2013/03/018
WOS KeywordGALAXIES ; DETECTOR ; BOSON ; LHC ; I.
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000316989200019
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9860
Collection太阳高能及相关物理过程研究团组
Affiliation1.Natl Ctr Nucl Res, PL-00681 Warsaw, Poland
2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Tsai, Yue-Lin Sming,Yuan, Qiang,Huang, Xiaoyuan. A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2013,0(3):97-100.
APA Tsai, Yue-Lin Sming,Yuan, Qiang,&Huang, Xiaoyuan.(2013).A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,0(3),97-100.
MLA Tsai, Yue-Lin Sming,et al."A generic method to constrain the dark matter model parameters from Fermi observations of dwarf spheroids".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 0.3(2013):97-100.
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