Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation
文献类型：期刊论文
| 作者 | Chan, Man Ho1; Yeung, Chu Fai1; Cui, Lang2 ; Leung, Chun Sing3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2021-03-01 |
| 卷号 | 501期号:4页码:5692-5696 |
| 关键词 | dark matter radio continuum: galaxies |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/staa4004 |
| 产权排序 | 2 |
| 英文摘要 | Some recent studies have examined the gamma-ray flux profile of our Galaxy to determine the signal of dark matter annihilation. However, the results are controversial and no confirmation is obtained. In this article, we study the radio flux density profile of the M31 galaxy and show that it could manifest a possible signal of dark matter annihilation. By comparing the likelihoods between the archival observed radio flux density profile data and the predicted radio flux density profile contributed by dark matter and stellar emission, we can constrain the relevant dark matter parameters. Specifically, for the thermal annihilation cross-section via the channel, the best-fitting value of dark matter mass is similar to 30GeV, which is consistent with the results of many recent studies. We expect that this method would become another useful way to constrain dark matter, which is complementary to the traditional radio analyses and the other indirect detections. |
| URL标识 | 查看原文 |
| 资助项目 | Research Grants Council of the Hong Kong Special Administrative Region, China[EdUHK 28300518] ; Education University of Hong Kong[RG 2/2019-2020R] ; National Key R&D Program of China[2018YFA0404602] ; National Natural Science Foundation of China (NSFC)[61931002] ; National Natural Science Foundation of China (NSFC)[U1731103] ; Youth Innovation Promotion Association of the CAS[2017084] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000637320000067 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Research Grants Council of the Hong Kong Special Administrative Region, China ; Education University of Hong Kong ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association of the CAS |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/3991]  |
| 专题 | 星系宇宙学研究团组 |
| 通讯作者 | Chan, Man Ho; Cui, Lang |
| 作者单位 | 1.Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China 3.Hong Kong Polytech Univ, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chan, Man Ho,Yeung, Chu Fai,Cui, Lang,et al. Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,501(4):5692-5696. |
| APA | Chan, Man Ho,Yeung, Chu Fai,Cui, Lang,&Leung, Chun Sing.(2021).Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,501(4),5692-5696. |
| MLA | Chan, Man Ho,et al."Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 501.4(2021):5692-5696. |
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