Search for very high energy γ-ray emission from GRB 190829A with LHAASO-WCDA triggerless data
文献类型：会议论文
| 作者 | Yao, Yuhua2,3; Liu, Wei2; Qiao, Bingqiang2; Guo, Yiqing2; Hu, Hongbo2,4; Yang, Chaowen3; Yao, Zhiguo2; Cao, Zhen5,6,7; Aharonian, F.8,9; An, Q.1,10 |
| 出版日期 | 2022-03-18 |
| 会议日期 | 2021-07-12 |
| 会议地点 | Virtual, Berlin, Germany |
| 卷号 | 395 |
| DOI | 10.22323/1.395.0853 |
| 英文摘要 | The observation of very high energy (VHE, > 100GeV) photon from γ-ray bursts (GRBs) can advance our understanding of their radiation mechanism, the evolution of host-galaxies, violations of Lorentz invariance, extragalactic background light, and intergalactic magnetic field. Recently the measurements on VHE emission from afterglow phase have blossomed and borne fruit while detection of the prompt emission is rare. It’s important to observe prompt emissions by ground-based instruments which take advantage of wide field of view and high duty cycle. Up to now, of the total six GRBs reported with VHE γ-ray emissions, GRB 190829A is the nearest one. The detection of its VHE emission was announced by H.E.S.S. at about 4h 20m after the burst. While during its prompt phase, GRB 190829A was at the edge of the field of view of LHAASO. Benefiting by the high altitude of 4410 m and the triggerless observation mode, the energy threshold of LHAASO is largely reduced to tens of GeV. This work presents the search for VHE γ-ray emission from GRB 190829A with the triggerless data taken by the first pond of LHAASO-WCDA. The analysis shows no indication of VHE emission neither in the prompt nor in the first 2 hours of afterglow phase, thus 95% upper limits are yielded. Furthermore, the upper limits of prompt phase was used to constrain the spectral parameter space of VHE extra component based on a phenomenological model. © Copyright owned by the author(s). |
| 产权排序 | 第32完成单位 |
| 资助机构 | National Natural Science Foundation of China[11635011,U1831208] |
| 会议录 | Proceedings of Science
 |
| 会议录出版者 | Sissa Medialab Srl |
| 文献子类 | Conference article (CA) |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 核科学技术 |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/25724]  |
| 专题 | 星系类星体研究组 |
| 作者单位 | 1.University of Science and Technology of China, Anhui, Hefei, 230026, China; 2.College of Physical Science and Technology, Sichuan University, N.29 Wangjiang Road, Jiuyanqiao, Wuhou District, Sichuan Province, Chengdu City, 610064, China; 3.Institute of High Energy Physics, Chinese Academy of Sciences, No.19B Yuquan Road, Shijingshan District, Beijing, 100049, China; 4.University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China; 5.Key Laboratory of Particle Astrophyics, Experimental Physics Division, Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China; 6.University of Chinese Academy of Sciences, Beijing, 100049, China; 7.TIANFU Cosmic Ray Research Center, Sichuan, Chengdu, China; 8.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2, Dublin, Ireland; 9.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany; 10.State Key Laboratory of Particle Detection and Electronics, China; |
| 推荐引用方式 GB/T 7714 | Yao, Yuhua,Liu, Wei,Qiao, Bingqiang,et al. Search for very high energy γ-ray emission from GRB 190829A with LHAASO-WCDA triggerless data[C]. 见:. Virtual, Berlin, Germany. 2021-07-12. |
入库方式： OAI收割
来源：云南天文台
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。