Measurement of separate electron and positron spectra from 10 to 20 GeV with the geomagnetic field on DAMPE*
Year: 2025
Type: article
Abstract: The cosmic-ray (CR) electrons and positrons in space are of considerable significance for studying the origin and propagation of CRs. The satellite-borne detector Dark Matter Particle Explorer (DAMPE) has been used to measure the separate electron and positron spectra, as well as the positron fraction. In this study, the Earth's magnetic field is used to distinguish CR electrons and positrons, as the DAMPE detector does not carry an onboard magnet. The energy for the measurements ranges from 10 to 20 GeV, which is currently limited at high energy by the zenith-pointing orientation of DAMPE. The results are consistent with previous measurements based on the magnetic spectrometer by AMS-02 and PAMELA, whereas the results of Fermi-LAT appear to be systematically shifted to larger values.
Source: Chinese Physics C
Authors: F. Alemanno, Q. 琪 An 安, P. Azzarello, F. C. T. Barbato, P. Bernardini, X. J. 效军 Bi 毕, H. V. Boutin, I. Cagnoli, M. S. 明生 Cai 蔡, E. Casilli, E. Catanzani, J. 进 Chang 常, D. Y. 灯意 Chen 陈, J. L. 俊岭 Chen 陈, Z. F. 占方 Chen 陈, Z. X. 梓轩 Chen 陈, P. Coppin, M. Y. 明阳 Cui 崔, T. S. 天舒 Cui 崔, Y. X. 宇鑫 Cui 崔, I. De Mitri, F. de Palma, A. Di Giovanni, T. K. 铁矿 Dong 董, Z. X. 振兴 Dong 董, G. Donvito, J. L. 敬来 Duan 段, K. K. 凯凯 Duan 段, R. R. 瑞睿 Fan 樊, Y. Z. 一中 Fan 范, F. 芳 Fang 方, K. 堃 Fang 方, C. Q. 常青 Feng 封, L. 磊 Feng 冯, J. M. Frieden, P. Fusco, M. 旻 Gao 高, F. Gargano, E. Ghose, K. 轲 Gong 龚, Y. Z. 一忠 Gong 宫, D. Y. 东亚 Guo 郭, J. H. 建华 Guo 郭, S. X. 霜雪 Han 韩, Y. M. 一鸣 Hu 胡, G. S. 光顺 Huang 黄, X. Y. 晓渊 Huang 黄, Y. Y. 永益 Huang 黄, M. Ionica, L. Y. 璐遥 Jiang 蒋, Y. Z. 耀族 Jiang 姜, W. 维 Jiang 蒋, J. 洁 Kong 孔, A. Kotenko, D. Kyratzis, S. J. 仕俊 Lei 雷, M. B. 曼冰 Li 李, W. H. 文昊 Li 李, W. L. 伟良 Li 李, X. 翔 Li 李, X. Q. 宪强 Li 李, Y. M. 耀明 Liang 梁, C. M. 成明 Liu 刘, H. 浩 Liu 刘, J. 杰 Liu 刘, S. B. 树彬 Liu 刘, Y. 杨 Liu 刘, F. Loparco, C. N. 川宁 Luo 罗, M. 苗 Ma 马, P. X. 鹏雄 Ma 马, T. 涛 Ma 马, X. Y. 晓勇 Ma 马, G. Marsella, M. N. Mazziotta, D. 丹 Mo 莫, Y. 宇 Nie 聂, X. Y. 晓阳 Niu 牛, A. Parenti, W. X. 文溪 Peng 彭, X. Y. 晓艳 Peng 彭, C. Perrina, E. Putti-Garcia, R. 锐 Qiao 乔, J. N. 家宁 Rao 饶, Y. 杙 Rong 戎, R. Sarkar, P. Savina, A. Serpolla, Z. 芝 Shangguan 上官, W. H. 卫华 Shen 沈, Z. Q. 兆强 Shen 沈, Z. T. 仲弢 Shen 沈, L. Silveri, J. X. 景星 Song 宋, H. 弘 Su 苏, M. 萌 Su 苏, H. R. 浩然 Sun 孙, Z. Y. 志宇 Sun 孙, A. Surdo, X. J. 学剑 Teng 滕, A. Tykhonov, G. F. 桂夫 Wang 王, J. Z. 锦州 Wang 汪, L. G. 连国 Wang 王, S. 慎 Wang 汪, X. L. 晓莲 Wang 汪, Y. F. 砚方 Wang 王, Y. 颖 Wang 王, D. M. 大明 Wei 韦, J. J. 家驹 Wei 韦, Y. F. 逸丰 Wei 魏, D. 帝 Wu 吴, J. 健 Wu 伍, S. S. 沙沙 Wu 伍, X. 欣 Wu 吴, Z. Q. 子晴 Xia 夏, Z. 峥 Xiong 熊, E. H. 恩珩 Xu 徐, H. T. 海涛 Xu 徐, J. 静 Xu 许, Z. H. 志会 Xu 徐, Z. L. 遵磊 Xu 徐, Z. Z. 咨宗 Xu 许, G. F. 国凤 Xue 薛, H. B. 海波 Yang 杨, P. 鹏 Yang 杨, Y. Q. 雅清 Yang 杨, H. J. 会军 Yao 姚, M. Y. 明宇 Yan 阎, Y. H. 玉洪 Yu 余, Q. 强 Yuan 袁, C. 川 Yue 岳, J. J. 京京 Zang 藏, S. X. 胜霞 Zhang 张, W. Z. 文璋 Zhang 张, Y. 岩 Zhang 张, Y. 毅 Zhang 张, Y. J. 永杰 Zhang 张, Y. L. 云龙 Zhang 张, Y. P. 亚鹏 Zhang 张, Y. Q. 永强 Zhang 张, Z. 哲 Zhang 张, Z. Y. 志永 Zhang 张, C. 聪 Zhao 赵, H. Y. 红赟 Zhao 赵, X. F. 勋峰 Zhao 赵, C. Y. 昌义 Zhou 周, Y. 岩 Zhu 朱
Institutions: University of Salento, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Lecce, University of Geneva, Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso, Gran Sasso Science Institute, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Istituto Nazionale di Fisica Nucleare, Sezione di Bari, École Polytechnique Fédérale de Lausanne, Polytechnic University of Bari, University of Palermo, Université Libre de Bruxelles, Interuniversity Institute for High Energies, New York University Abu Dhabi
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4413144427