IHEP OpenIR
Particle Dark Matter Searches Outside the Local Group
Regis, M; Xia JQ(夏俊卿); Xia, JQ; Cuoco, A; Branchini, E; Fornengo, N; Viel, M
2015
Source PublicationPHYSICAL REVIEW LETTERS
ISSN0031-9007
EISSN1079-7114
Volume114Pages:241301
Corresponding Author夏俊卿
SubtypeArticle
AbstractIf dark matter (DM) is composed by particles which are nongravitationally coupled to ordinary matter, their annihilations or decays in cosmic structures can result in detectable radiation. We show that the most powerful technique to detect a particle DM signal outside the Local Group is to study the angular cross-correlation of nongravitational signals with low-redshift gravitational probes. This method allows us to enhance the signal to noise from the regions of the Universe where the DM-induced emission is preferentially generated. We demonstrate the power of this approach by focusing on GeV-TeV DM and on the recent cross-correlation analysis between the 2MASS galaxy catalogue and the Fermi-LAT gamma-ray maps. We show that this technique is more sensitive than other extragalactic gamma-ray probes, such as the energy spectrum and angular autocorrelation of the extragalactic background, and emission from clusters of galaxies. Intriguingly, we find that the measured cross-correlation can be well fitted by a DM component, with a thermal annihilation cross section and mass between 10 and 100 GeV, depending on the small-scale DM properties and gamma-ray production mechanism. This solicits further data collection and dedicated analyses.
Subject AreaPhysics
DOI10.1103/PhysRevLett.114.241301
Indexed BySCI ; INSPIREHEP ; ADS ; EI
Language英语
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
WOS IDWOS:000356221000002
ADS Bibcode2015PhRvL.114x1301R
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015PhRvL.114x1301R
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015PhRvL.114x1301R/citations
inspireid1353637
inspireURLhttps://inspirehep.net/literature/1353637
Citation statistics
Cited Times:51 [INSPIRE]
Cited Times:49 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228431
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Regis, M,Xia JQ,Xia, JQ,et al. Particle Dark Matter Searches Outside the Local Group[J]. PHYSICAL REVIEW LETTERS,2015,114:241301.
APA Regis, M.,夏俊卿.,Xia, JQ.,Cuoco, A.,Branchini, E.,...&Viel, M.(2015).Particle Dark Matter Searches Outside the Local Group.PHYSICAL REVIEW LETTERS,114,241301.
MLA Regis, M,et al."Particle Dark Matter Searches Outside the Local Group".PHYSICAL REVIEW LETTERS 114(2015):241301.
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