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| Analysing the radio flux density profile of the M31 galaxy: a possible dark matter interpretation | |
Chan, Man Ho1; Yeung, Chu Fai1; Cui, Lang2 ; Leung, Chun Sing3
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| 2021-03-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 501Issue:4Pages:5692-5696 |
| Contribution Rank | 2 |
| Abstract | 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. |
| Keyword | dark matter radio continuum: galaxies |
| DOI | 10.1093/mnras/staa4004 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000637320000067 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/3992 |
| Collection | 射电天文研究室_星系宇宙学研究团组 |
| Corresponding Author | Chan, Man Ho; Cui, Lang |
| Affiliation | 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 |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Chan-2021-Analysing （415KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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