IHEP OpenIR  > 理论物理室
Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies
Zhao Y(赵熠); Bi XJ(毕效军); Yin PF(殷鹏飞); Zhang XM(张新民); Zhao, Y; Bi, XJ; Yin, PF; Zhang, XM
2018
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
EISSN2470-0029
Volume97Issue:6Pages:63013
SubtypeArticle
AbstractSearching for gamma rays from dwarf spheroidal galaxies (dSphs) is a promising approach to detect dark matter (DM) due to the high DM densities and low baryon components in dSphs. The Fermi-LAT observations from dSphs have set stringent constraints on the velocity independent annihilation cross section. However, the constraints from dSphs may change in velocity dependent annihilation scenarios because of the different velocity dispersions in galaxies. In this work, we study how to set constraints on the velocity dependent annihilation cross section from the combined Fermi-LAT observations of dSphs with the kinematic data. In order to calculate the gamma ray flux from the dSph, the correlation between the DM density profile and velocity dispersion at each position should be taken into account. We study such correlation and the relevant uncertainty from kinematic observations by performing a Jeans analysis. Using the observational results of three ultrafaint dSphs with large J-factors, including Willman 1, Reticulum II, and Triangulum II, we set constraints on the p-wave annihilation cross section in the Galaxy as an example.
DOI10.1103/PhysRevD.97.063013
WOS KeywordLARGE-AREA TELESCOPE ; MILKY-WAY ; SPHEROIDAL GALAXIES ; JEANS ANALYSIS ; LOCAL GROUP ; MODELS ; SATELLITE ; PROFILE ; CLUSTERS ; HALO
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000428241300002
ADS Bibcode2018PhRvD..97f3013Z
AXRIV CODE1711
inspireid1635862
Citation statistics
Cited Times:18 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285759
Collection理论物理室
粒子天体物理中心
Corresponding AuthorZhao Y(赵熠)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Zhao Y,Bi XJ,Yin PF,et al. Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies[J]. PHYSICAL REVIEW D,2018,97(6):63013.
APA 赵熠.,毕效军.,殷鹏飞.,张新民.,Zhao, Y.,...&Zhang, XM.(2018).Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies.PHYSICAL REVIEW D,97(6),63013.
MLA 赵熠,et al."Constraint on the velocity dependent dark matter annihilation cross section from gamma-ray and kinematic observations of ultrafaint dwarf galaxies".PHYSICAL REVIEW D 97.6(2018):63013.
Files in This Item:
File Name/Size DocType Version Access License
20180274.pdf(707KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[赵熠]'s Articles
[毕效军]'s Articles
[殷鹏飞]'s Articles
Baidu academic
Similar articles in Baidu academic
[赵熠]'s Articles
[毕效军]'s Articles
[殷鹏飞]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[赵熠]'s Articles
[毕效军]'s Articles
[殷鹏飞]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.