| Title | Line-of-shower trigger method to lower energy threshold for GRB detection using LHAASO-WCDA |
| Authors | Aharonian, F. An, Q. Axikegu Bai, L. X. Bai, Y. X. Bao, Y. W. Bastieri, D. Bi, X. J. Bi, Y. J. Cai, H. Cai, J. T. Cao, Z. Cao, Z. Chang, J. Chang, J. F. Chang, X. C. Chen, B. M. Chen, J. Chen, L. Chen, L. Chen, L. Chen, M. J. Chen, M. L. Chen, Q. H. Chen, S. H. Chen, S. Z. Chen, T. L. Chen, X. L. Chen, Y. Cheng, N. Cheng, Y. D. Cui, S. W. Cui, X. H. Cui, Y. D. Dai, B. Z. Dai, H. L. Dai, Z. G. Danzengluobu della Volpe, D. Piazzoli, B. D'Ettorre Dong, X. J. Fan, J. H. Fan, Y. Z. Fan, Z. X. Fang, J. Fang, K. Feng, C. F. Feng, L. Feng, S. H. Feng, Y. L. Gao, B. Gao, C. D. Gao, Q. Gao, W. Ge, M. M. Geng, L. S. Gong, G. H. Gou, Q. B. Gu, M. H. Guo, J. G. Guo, X. L. Guo, Y. Q. Guo, Y. Y. Han, Y. A. He, H. H. He, H. N. He, J. C. He, S. L. He, X. B. He, Y. Heller, M. Hor, Y. K. Hou, C. Hou, X. Hu, H. B. Hu, S. Hu, S. C. Hu, X. J. Huang, D. H. Huang, Q. L. Huang, W. H. Huang, X. T. Huang, Z. C. Ji, F. Ji, X. L. Jia, H. Y. Jiang, K. Jiang, Z. J. Jin, C. Kuleshov, D. Levochkin, K. Li, B. B. Li, C. Li, C. Li, F. Li, H. B. Li, H. C. Li, H. Y. Li, J. Li, K. Li, W. L. Li, X. Li, X. Li, X. R. Li, Y. Li, Y. Z. Li, Z. Li, Z. Liang, E. W. Liang, Y. F. Lin, S. J. Liu, B. Liu, C. Liu, D. Liu, H. Liu, H. D. Liu, J. Liu, J. L. Liu, J. S. Liu, J. Y. Liu, M. Y. Liu, R. Y. Liu, S. M. Liu, W. Liu, Y. N. Liu, Z. X. Long, W. J. Lu, R. Lv, H. K. Ma, B. Q. Ma, L. L. Ma, X. H. Mao, J. R. Masood, A. Mitthumsiri, W. Montaruli, T. Nan, Y. C. Pang, B. Y. Pattarakijwanich, P. Pei, Z. Y. Qi, M. Y. Ruffolo, D. Rulev, V Saiz, A. Shao, L. Shchegolev, O. Sheng, X. D. Shi, J. R. Song, H. C. Stepanov, V Sun, Q. N. Sun, X. N. Sun, Z. B. Tam, P. H. T. Tang, Z. B. Tian, W. W. Wang, B. D. Wang, C. Wang, H. Wang, H. G. Wang, J. C. Wang, J. S. Wang, L. P. Wang, L. Y. Wang, R. N. Wang, W. Wang, W. Wang, X. G. Wang, X. J. Wang, X. Y. Wang, Y. D. Wang, Y. J. Wang, Y. P. Wang, Z. Wang, Z. Wang, Z. H. Wang, Z. X. Wei, D. M. Wei, J. J. Wei, Y. J. Wen, T. Wu, C. Y. Wu, H. R. Wu, S. Wu, W. X. Wu, X. F. Xi, S. Q. Xia, J. Xia, J. J. Xiang, G. M. Xiao, G. Xiao, H. B. Xin, G. G. Xin, Y. L. Xing, Y. Xu, D. L. Xu, R. X. Xue, L. Yan, D. H. Yang, C. W. Yang, F. F. Yang, J. Y. Yang, L. L. Yang, M. J. Yang, R. Z. Yang, S. B. Yao, Y. H. Yao, Z. G. Ye, Y. M. Yin, L. Q. Yin, N. You, X. H. You, Z. Y. Yu, Y. H. Yuan, Q. Zeng, H. D. Zeng, T. X. Zeng, W. Zeng, Z. K. Zha, M. Zhai, X. X. Zhang, B. B. Zhang, H. M. Zhang, H. Y. Zhang, J. L. Zhang, J. W. Zhang, L. Zhang, L. Zhang, L. X. Zhang, P. F. Zhang, P. P. Zhang, R. Zhang, S. R. Zhang, S. S. Zhang, X. Zhang, X. P. Zhang, Y. Zhang, Y. Zhang, Y. F. Zhang, Y. L. Zhao, B. Zhao, J. Zhao, L. Zhao, L. Z. Zhao, S. P. Zheng, F. Zheng, Y. Zhou, B. Zhou, H. Zhou, J. N. Zhou, P. Zhou, R. Zhou, X. X. Zhu, C. G. Zhu, F. R. Zhu, H. Zhu, K. J. Zuo, X. |
| Affiliation | Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China Chinese Acad Sci, Inst High Energy Phys, Expt Phys Div, Beijing 100049, Peoples R China Chinese Acad Sci, Comp Ctr, Inst High Energy Phys, Beijing 100049, Peoples R China Univ Chinese Acad Sci, Beijing 100049, Peoples R China TIANFU Cosm Ray Res Ctr, Chengdu, Sichuan, Peoples R China State Key Lab Particle Detect & Elect, Beijing, Peoples R China Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China Peking Univ, Sch Phys, Beijing 100871, Peoples R China Guangzhou Univ, Ctr Astrophys, Guangzhou 510006, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519000, Guangdong, Peoples R China Sun Yat Sen Univ, Sch Phys Guangzhou, Zhuhai 519000, Guangdong, Peoples R China Guangxi Univ, Sch Phys Sci & Technol, Nanning 530004, Guangxi, Peoples R China Hebei Normal Univ, Shijiazhuang 050024, Hebei, Peoples R China Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210023, Jiangsu, Peoples R China Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong, Peoples R China Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Sichuan, Peoples R China Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China Sichuan Univ, Coll Phys, Chengdu 610065, Sichuan, Peoples R China Tibet Univ, Key Lab Cosm Rays, Minist Educ, Lhasa 850000, Tibet, Peoples R China Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China Yunnan Univ, Sch Phys & Astron, Kunming 650091, Yunnan, Peoples R China Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China Dublin Inst Adv Studies, 31 Fitzwilliam Pl, Dublin, Ireland Max Planck Inst Nucl Phys, POB 103980, D-69029 Heidelberg, Germany Univ Napoli Federico II, Dipartimento Fis, Complesso Univ Monte St Angelo, Via Cinthia, I-80126 Naples, Italy Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia Moscow Inst Phys & Technol, Moscow 141700, Russia Univ Geneva, Fac Sci, Dept Phys Nucl & Corpusculaire, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland Mahidol Univ, Fac Sci, Dept Phys, Bangkok 10400, Thailand |
| Keywords | GAMMA-RAY BURST DISCOVERY AFTERGLOW EMISSION SPECTRA |
| Issue Date | Nov-2021 |
| Publisher | RADIATION DETECTION TECHNOLOGY AND METHODS |
| Abstract | Purpose Observation of high energy and very high emission from Gamma Ray Bursts (GRBs) is crucial to study the gigantic explosion and the underline processes. With a large field-of-view and almost full duty cycle, the Water Cherenkov Detector Array (WCDA), a sub-array of the Large High Altitude Air Shower Observatory (LHAASO), is appropriate to monitor the very high energy emission from unpredictable transients such as GRBs. Method Nevertheless, the main issue for an extensive air shower array is the high energy threshold which limits the horizon of the detector. To address this issue a new trigger method is developed in this article to lower the energy threshold of WCDA for GRB observation. Result The proposed method significantly improves the detection efficiency of WCDA for gamma-rays around the GRB direction at 10-300 GeV. The sensitivity of the WCDA for GRB detection with the new trigger method is estimated. The achieved sensitivity of the quarter WCDA array above 10 GeV is comparable with that of Fermi-LAT. The data analysis process and corresponding fluence upper limit for GRB 190719C is presented as an example. |
| URI | http://hdl.handle.net/20.500.11897/631116 |
| ISSN | 2509-9930 |
| DOI | 10.1007/s41605-021-00281-6 |
| Indexed | ESCI |
| Appears in Collections: | 物理学院 |
