Searching for dark matter signals from local dwarf spheroidal galaxies at low radio frequencies in the GLEAM survey
文献类型：期刊论文
| 作者 | Cook, R. H. W.2,3,4; Seymour, N.3; Spekkens, K.5; Hurley-Walker, N.3; Hancock, P. J.3; Bell, M. E.6; Callingham, J. R.7; For, B-Q2,4; Franzen, T. M. O.3,7; Gaensler, B. M.4,8 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 494期号:1页码:135-145 |
| 关键词 | galaxies: dwarf dark matter radio continuum: galaxies |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/staa726 |
| 英文摘要 | The search for emission from weakly interacting massive particle (WIMP) dark matter annihilation and decay has become a multipronged area of research not only targeting a diverse selection of astrophysical objects, but also taking advantage of the entire electromagnetic spectrum. The decay of WIMP particles into standard model particles has been suggested as a possible channel for synchrotron emission to be detected at low radio frequencies. Here, we present the stacking analysis of a sample of 33 dwarf spheroidal (dSph) galaxies with low-frequency (72-231 MHz) radio images from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. We produce radial surface brightness profiles of images centred upon each dSph galaxy with background radio sources masked. We remove 10 fields from the stacking due to contamination from either poorly subtracted, bright radio sources or strong background gradients across the field. The remaining 23 dSph galaxies are stacked in an attempt to obtain a statistical detection of any WIMP-induced synchrotron emission in these systems. We find that the stacked radial brightness profile does not exhibit a statistically significant detection above the 95 per cent confidence level of similar to 1.5 mJy beam(-1). This novel technique shows the potential of using low-frequency radio images to constrain fundamental properties of particle dark matter. |
| WOS关键词 | GAMMA-RAY EMISSION |
| 资助项目 | Australian Government (NCRIS) ; Western Australian ; Australian Governments ; Chandra X-ray Science Center (CXC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; JWST Mission office at the Space Telescope Science Institute |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000535885900014 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian ; Western Australian ; Australian Governments ; Australian Governments ; Chandra X-ray Science Center (CXC) ; Chandra X-ray Science Center (CXC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; JWST Mission office at the Space Telescope Science Institute ; JWST Mission office at the Space Telescope Science Institute ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian ; Western Australian ; Australian Governments ; Australian Governments ; Chandra X-ray Science Center (CXC) ; Chandra X-ray Science Center (CXC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; JWST Mission office at the Space Telescope Science Institute ; JWST Mission office at the Space Telescope Science Institute ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian ; Western Australian ; Australian Governments ; Australian Governments ; Chandra X-ray Science Center (CXC) ; Chandra X-ray Science Center (CXC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; JWST Mission office at the Space Telescope Science Institute ; JWST Mission office at the Space Telescope Science Institute ; Australian Government (NCRIS) ; Australian Government (NCRIS) ; Western Australian ; Western Australian ; Australian Governments ; Australian Governments ; Chandra X-ray Science Center (CXC) ; Chandra X-ray Science Center (CXC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; High Energy Astrophysics Science Archive Center (HEASARC) ; JWST Mission office at the Space Telescope Science Institute ; JWST Mission office at the Space Telescope Science Institute |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54602]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Cook, R. H. W. |
| 作者单位 | 1.Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia 2.Univ Western Australia, Int Ctr Radio Astron Res ICRAR, Crawley, WA 6009, Australia 3.Curtin Univ, Int Ctr Radio Astron Res ICRAR, Bentley, WA 6102, Australia 4.ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT 2601, Australia 5.Royal Mil Coll Canada, Dept Phys & Space Sci, POB 17000, Kingston, ON K7K 7B4, Canada 6.Univ Technol Sydney, 15 Broadway, Ultimo, NSW 2007, Australia 7.Netherlands Inst Radio Astron, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands 8.Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada 9.Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cook, R. H. W.,Seymour, N.,Spekkens, K.,et al. Searching for dark matter signals from local dwarf spheroidal galaxies at low radio frequencies in the GLEAM survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,494(1):135-145. |
| APA | Cook, R. H. W..,Seymour, N..,Spekkens, K..,Hurley-Walker, N..,Hancock, P. J..,...&Zheng, Q..(2020).Searching for dark matter signals from local dwarf spheroidal galaxies at low radio frequencies in the GLEAM survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,494(1),135-145. |
| MLA | Cook, R. H. W.,et al."Searching for dark matter signals from local dwarf spheroidal galaxies at low radio frequencies in the GLEAM survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 494.1(2020):135-145. |
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来源：国家天文台
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