首页|A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

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Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up observations.Localization based on the relative counts of different detectors has been widely used for all-sky gamma-ray monitors.There are two major methods for this count distribution localization:χ2 minimization method and the Bayesian method.Here we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ2 method.With comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ2 method,especially for weak bursts.We further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location templates.Our method is very suitable for scenarios with limited computation resources or time-sensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

methodsdata analysis-methodsanalytical-(stars:)gamma-ray burstgeneral

Yi Zhao、Wangchen Xue、Shaolin Xiong、Qi Luo、Yuanhao Wang、Jiacong Liu、Heng Yu、Xiaoyun Zhao、Yue Huang、Jinyuan Liao、Jianchao Sun、Xiaobo Li、Qibin Yi、Ce Cai、Shuo Xiao、Shenglun Xie、Chao Zheng、Yanqiu Zhang、Chenwei Wang、Wenjun Tan、Zhiwei Guo、Chaoyang Li、Zhenghua An、Gang Chen、Yanqi Du、Min Gao、Ke Gong、Dongya Guo、Jiang He、Jianjian He、Bing Li、Gang Li、Xinqiao Li、Jing Liang、Xiaohua Liang、Yaqing Liu、Xiang Ma、Rui Qiao、Liming Song、Xinying Song、Xilei Sun、Jin Wang、Ping Wang、Xiangyang Wen、Hong Wu、Yanbing Xu、Sheng Yang、Dali Zhang、Fan Zhang、Hongmei Zhang、Peng Zhang、Shu Zhang、Zhen Zhang、Shijie Zheng、Keke Zhang、Xingbo Han、Haiyan Wu、Hu Tai、Hao Geng、Gaopeng Lu、Wei Xu、Fanchao Lyu、Hongbo Zhang、Fangjun Lu、Shuangnan Zhang

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Department of Astronomy,Beijing Normal University,Beijing 100875,China

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China

University of Chinese Academy of Sciences,Beijing 100049,China

School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China

College of Physics,Hebei Normal University,Shijiazhuang 050024,China

Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing,Guizhou Normal University,Guiyang 550001,China

School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550001,China

Institute of Astrophysics,Central China Normal University,Wuhan 430079,China

College of physics Sciences Technology,Hebei University,Baoding 071002,China

Physics and Space Science College,China West Normal University,Nanchong 637002,China

School of Computing and Artificial Intelligence,Southwest Jiaotong University,Chengdu 611756,China

College of Electronic and information Engineering,Tongji University,Shanghai 201804,China

Innovation Academy for Microsatellites of Chinese Academy of Sciences,Shanghai 201304,China

National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China

School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China

Electronic Information School,Wuhan University,Wuhan 430072,China

Key Laboratory of Transportation Meteorology of China Meteorological Administration,Nanjing Joint Institute for Atmospheric Sciences,Nanjing 210000,China

Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China

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National Key R&D Program of ChinaStrategic Priority Research Program on Space Science,the Chinese Academy of SciencesStrategic Priority Research Program on Space Science,the Chinese Academy of SciencesStrategic Priority Research Program on Space Science,the Chinese Academy of SciencesStrategic Priority Research Program on Space Science,the Chinese Academy of SciencesNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational HEP Data Center

2021YFA0718500XDA15360102XDA15360300XDA15052700E02212A02S12173038U2038106E029S2S1

2024

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子:0.406
ISSN:1674-4527
年,卷(期):2024.24(10)