The Influence of the Nuclear Shadowing Effect on Astrophysical Neutrino Flux
文献类型：期刊论文
| 作者 | Liu, Z. Y.5; Yang, H. Y.4; Zheng, Y. G.3,5; Yang CY(杨初源)1,2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2025-08-01 |
| 卷号 | 988期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/adea48 |
| 产权排序 | 第4完成单位 |
| 文献子类 | Article |
| 英文摘要 | The production of neutrinos from ultrahigh-energy cosmic rays (UHECRs) is modulated by nuclear shadowing effects that are often overlooked in theoretical models. Nuclear shadowing, the suppression of pion production in photonuclear interactions within heavy nuclei, plays a critical role in determining neutrino yields. Current predictions frequently assume that UHECRs are proton-dominated and neglect the nuclear medium's influence on pion cross sections, leading to overestimates of neutrino fluxes. Here, we incorporate nuclear shadowing effects into simulations of proton-photon (p gamma) and proton-proton (pp) interactions in astrophysical source environments. We also account for nuclear photodisintegration in p gamma processes, which further modifies secondary particle production. We integrate these effects into pure composition scenarios (p, He, N, and Fe) to calculate the resultant neutrino background flux. Our results demonstrate that nuclear shadowing can reduce neutrino fluxes from heavy nuclei by a factor of 2-3 compared to proton-only scenarios. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | ENERGY COSMIC-RAY ; PARTICLE-ACCELERATION ; COSMOGENIC NEUTRINOS ; EMISSION ; ORIGIN ; PHOTODISINTEGRATION ; BURSTS |
| 资助项目 | National Natural Science Foundation of China[12363002]; National Natural Science Foundation of China[12233006]; National Natural Science Foundation of China[U203111]; Yunnan Provincial Department of Education Scientific Research Foundation[2025J1040]; Yunnan Provincial Department of Education Scientific Research Foundation[2025Y0301] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001536500300001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Natural Science Foundation of China[12363002, 12233006, U203111] ; Yunnan Provincial Department of Education Scientific Research Foundation[2025J1040, 2025Y0301] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28471]  |
| 专题 | 星系类星体研究组 |
| 通讯作者 | Zheng, Y. G.; Yang CY(杨初源) |
| 作者单位 | 1.Key Laboratory of Astroparticle Physics of Yunnan Province, Kunming, 650091, People’s Republic of China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, People’s Republic of China; chyy@ynao.ac.cn; 3.Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics, Kunming, Yunnan, 650500, People’s Republic of China; 4.College of Physics and Information Engineering, Zhaotong University, Zhaotong, 657000, People’s Republic of China; 5.Department of Physics, Yunnan Normal University, Kunming, Yunnan, 650092, People’s Republic of China; ynzyg@ynu.edu.cn; |
| 推荐引用方式 GB/T 7714 | Liu, Z. Y.,Yang, H. Y.,Zheng, Y. G.,et al. The Influence of the Nuclear Shadowing Effect on Astrophysical Neutrino Flux[J]. ASTROPHYSICAL JOURNAL,2025,988(2). |
| APA | Liu, Z. Y.,Yang, H. Y.,Zheng, Y. G.,&杨初源.(2025).The Influence of the Nuclear Shadowing Effect on Astrophysical Neutrino Flux.ASTROPHYSICAL JOURNAL,988(2). |
| MLA | Liu, Z. Y.,et al."The Influence of the Nuclear Shadowing Effect on Astrophysical Neutrino Flux".ASTROPHYSICAL JOURNAL 988.2(2025). |
入库方式： OAI收割
来源：云南天文台
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