Astrophysical Background and Dark Matter Implication Based on Latest AMS-02 Data
文献类型：期刊论文
| 作者 | Jin, Hong-Bo; Wu, Yue-Liang ; Zhou, Yu-Feng
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2020 |
| 卷号 | 901期号:1页码:80 |
| 关键词 | COSMIC-RAYS PARTICLE-ACCELERATION PROPAGATION ENERGY POSITRONS BE-10 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abb01a |
| 英文摘要 | The cosmic-ray (CR) positrons and antiprotons are often regarded as the collision products of CR nucleons with the interstellar medium. However, the predicted fluxes of CR positrons and antiprotons by the conventional models are not consistent with the experimental data from PAMELA, Fermi-LAT, AMS-02, etc. In this work, we choose the latest AMS-02 data to analyze the astrophysical background of CR positrons and antiprotons. QGSJET-II-04 is chosen as the hadronic interaction model. The GALPROP package is used to solve the propagation equation numerically. The results show that the predicted flux of CR positrons at low energies is consistent with AMS-02 data in the reacceleration and convection-diffusion (DCR) model. In the DCR model and the hadronic interaction model, QGSJET-II-04, the excess of CR antiprotons at low energies is excluded. The dark matter interpretation of the positron excess is analyzed with the total fluxes of CR electrons and positrons from AMS-02. The predicted best-fit mass of dark matter ranges from 400 GeV to 4 TeV. Moreover, in the above models the predicted flux of CR protons is completely consistent with AMS-02 data, which matches the hardening feature above 330 GeV. |
| 学科主题 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27160]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 2.[Wu, Yue-Liang 3.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 5.Chinese Acad Sci, CAS Key Lab Theoret Phys, Beijing, Peoples R China 6.Wu, Yue-Liang 7.[Jin, Hong-Bo |
| 推荐引用方式 GB/T 7714 | Jin, Hong-Bo,Wu, Yue-Liang,Zhou, Yu-Feng. Astrophysical Background and Dark Matter Implication Based on Latest AMS-02 Data[J]. ASTROPHYSICAL JOURNAL,2020,901(1):80. |
| APA | Jin, Hong-Bo,Wu, Yue-Liang,&Zhou, Yu-Feng.(2020).Astrophysical Background and Dark Matter Implication Based on Latest AMS-02 Data.ASTROPHYSICAL JOURNAL,901(1),80. |
| MLA | Jin, Hong-Bo,et al."Astrophysical Background and Dark Matter Implication Based on Latest AMS-02 Data".ASTROPHYSICAL JOURNAL 901.1(2020):80. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。