The dispersion measure contributions of the cosmic web
文献类型：期刊论文
| 作者 | Walker, Charles R. H.3; Spitler, Laura G.3; Ma, Yin-Zhe4; Cheng, Cheng2 ; Artale, Maria Celeste1,6,7; Hummels, Cameron B.5
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2024-03-08 |
| 卷号 | 683页码:A71 |
| 关键词 | methods: statistical galaxies: halos intergalactic medium large-scale structure of Universe |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202347139 |
| 产权排序 | 3 |
| 英文摘要 | Context. The large-scale distribution of baryons, commonly referred to as the cosmic web, is sensitive to gravitational collapse, mergers, and galactic feedback processes, and its large-scale structure (LSS) can be classified as halos, filaments, and voids. Fast radio bursts (FRBs) are extragalactic transient radio sources that undergo dispersion along their propagation paths. These systems provide insight into ionised matter along their sightlines by virtue of their dispersion measures (DMs), and have been investigated as probes of the LSS baryon fraction, the diffuse baryon distribution, and of cosmological parameters. Such efforts are highly complementary to the study of intergalactic medium (IGM) through X-ray observations, the Sunyaev-Zeldovich effect, and galaxy populations. Aims. We use the cosmological simulation IllustrisTNG to study FRB DMs accumulated while traversing different types of LSS. Methods. We combined methods for deriving electron density, classifying LSS, and tracing FRB sightlines through TNG300-1. We identified halos, filaments, voids, and collapsed structures along randomly selected sightlines, and calculated their DM contributions. Results. We present a comprehensive analysis of the redshift-evolving cosmological DM components of the cosmic web. We find that the filamentary contribution to DM dominates, increasing from similar to 71% to similar to 80% on average for FRBs originating at z = 0.1 versus z = 5, while the halo contribution falls, and the void contribution remains consistent to within similar to 1%. The majority of DM variance between sightlines originates from halo and filamentary environments, potentially making void-only sightlines more precise probes of cosmological parameters. We find that, on average, an FRB originating at z = 1 will intersect similar to 1.8 foreground collapsed structures of any mass, with this value increasing to similar to 12.4 structures for an FRB originating at z = 5. The measured impact parameters between our sightlines and TNG structures of any mass appear consistent with those reported for likely galaxy-intersecting FRBs. However, we measure lower average accumulated DMs from these structures than the similar to 90 pc cm(-3) DM excesses reported for these literature FRBs, indicating that some of this DM may arise from beyond the structures themselves. |
| WOS关键词 | SOLAR-LIKE OSCILLATIONS ; MAGNETIC WHITE-DWARF ; KEPLER LIGHT CURVES ; SYMBIOTIC STARS ; RECURRENT NOVA ; RED GIANTS ; FLICKERING VARIABILITY ; RS-OPH ; T-CRB ; DISCOVERY |
| 资助项目 | Max Planck Society ; National Research Foundation of South Africa[150580] ; NITheCS program New Insights into Astrophysics and Cosmology with Theoretical Models confronting Observational Data ; Seal of Excellence @UNIPD 2020 program under the ACROGAL project ; NSF[AAG-1911233] ; NASA[HST-AR-15800] ; NASA[HST-AR-16633] ; NASA[HST-GO-16703] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001181364400006 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | Max Planck Society ; National Research Foundation of South Africa ; NITheCS program New Insights into Astrophysics and Cosmology with Theoretical Models confronting Observational Data ; Seal of Excellence @UNIPD 2020 program under the ACROGAL project ; NSF ; NASA |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6245]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Walker, Charles R. H.; Spitler, Laura G. |
| 作者单位 | 1.Univ Andres Bello, Fac Ciencias Exactas, Inst Astrofis, Fernandez Concha 700, Santiago, Chile 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.Stellenbosch Univ, Dept Phys, ZA-7602 Matieland, South Africa 5.CALTECH, TAPIR, Pasadena, CA 91125 USA 6.INFN Padova, Via Marzolo 8, I-35131 Padua, Padova, Italy 7.Univ Padua, Phys & Astron Dept Galileo Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy |
| 推荐引用方式 GB/T 7714 | Walker, Charles R. H.,Spitler, Laura G.,Ma, Yin-Zhe,et al. The dispersion measure contributions of the cosmic web[J]. ASTRONOMY & ASTROPHYSICS,2024,683:A71. |
| APA | Walker, Charles R. H.,Spitler, Laura G.,Ma, Yin-Zhe,Cheng, Cheng,Artale, Maria Celeste,&Hummels, Cameron B..(2024).The dispersion measure contributions of the cosmic web.ASTRONOMY & ASTROPHYSICS,683,A71. |
| MLA | Walker, Charles R. H.,et al."The dispersion measure contributions of the cosmic web".ASTRONOMY & ASTROPHYSICS 683(2024):A71. |
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来源：新疆天文台
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