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| Ruling Out ～100–300 GeV Thermal Relic Annihilating Dark Matter by Radio Observation of the Andromeda Galaxy | |
Chan,Man Ho1; Cui,Lang2 ; Liu,Jun2,3; Leung,Chun Sing4
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| 2019-02-20 | |
| Source Publication | The Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 872Issue:2Pages:177 |
| Contribution Rank | 2 |
| Abstract | Abstract Over the past few years, some studies have claimed that annihilating dark matter with mass ～10–100 GeV can explain the GeV gamma-ray excess in our Galaxy. However, recent analyses of Fermi-LAT and radio observational data have ruled out the possibility of the thermal relic annihilating dark matter with mass m?≤?100 GeV for some popular annihilation channels. By using the new observed radio data of the Andromeda galaxy, we rule out the existence of ～100–300 GeV thermal relic annihilating dark matter for 10 annihilation channels. The lower limits of annihilating dark matter mass are improved to larger than 330 GeV for the most conservative case, which is a few times larger than the current best constraints. Moreover, these limits strongly disfavor the benchmark model of weakly interacting massive particles produced through the thermal freeze-out mechanism. |
| Keyword | dark matter |
| DOI | 10.3847/1538-4357/aafe0b |
| Language | 英语 |
| WOS ID | IOP:0004-637X-872-2-aafe0b |
| Publisher | The American Astronomical Society |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/2462 |
| Collection | 射电天文研究室 |
| Affiliation | 1.Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, People’s Republic of China; chanmh@eduhk.hk 2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, People’s Republic of China 3.Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 4.Hong Kong Polytechnic University, Hong Kong, People’s Republic of China |
| Recommended Citation GB/T 7714 | Chan,Man Ho,Cui,Lang,Liu,Jun,等. Ruling Out ～100–300 GeV Thermal Relic Annihilating Dark Matter by Radio Observation of the Andromeda Galaxy[J]. The Astrophysical Journal,2019,872(2):177. |
| APA | Chan,Man Ho,Cui,Lang,Liu,Jun,&Leung,Chun Sing.(2019).Ruling Out ～100–300 GeV Thermal Relic Annihilating Dark Matter by Radio Observation of the Andromeda Galaxy.The Astrophysical Journal,872(2),177. |
| MLA | Chan,Man Ho,et al."Ruling Out ～100–300 GeV Thermal Relic Annihilating Dark Matter by Radio Observation of the Andromeda Galaxy".The Astrophysical Journal 872.2(2019):177. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Chan-2019-Ruling Out（481KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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