[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
[2] Southwest Jiaotong Univ, Chengdu 611756, Peoples R China
[3] Qufu Normal Univ, Qufu 273165, Peoples R China
[4] Tongji Univ, Coll Elect & Informat Engn, Shanghai 201804, Peoples R China
[5] Hebei Normal Univ, Coll Phys, Shijiazhuang 050024, Peoples R China
[6] Hebei Normal Univ, Hebei Key Lab Photophys Res & Applicat, Shijiazhuang 050024, Peoples R China
[7] Guizhou Normal Univ, Guizhou Prov Key Lab Radio Astron & Data Proc, Guiyang 550001, Peoples R China
[8] Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China