Implication from GRB 221009A:Can TeV emission come from the GRB prompt phase?

作     者：Kai Wang Zhi-Peng Ma Ruo-Yu Liu Yuan-Chuan Zou Zhuo Li Zi-Gao Dai 

作者机构：Department of AstronomySchool of PhysicsHuazhong University of Science and TechnologyWuhan 430074China School of Astronomy and Space ScienceNanjing UniversityNanjing 210023China Key Laboratoryof Modern Astronomy and AstrophysicsMinistry of EducationNanjing UniversityNanjing 20023China Department of AstronomySchool of PhysicsPeking UniversityBeijing 100871China Kavli Institute for Astronomy and AstrophysicsPeking UniversityBeijing 100871China Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学：物理学、力学、天文学（英文版）)

年 卷 期：2023年第66卷第8期

页      面：139-149页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12003007,U2031105,U1931201,and U1931203) the Fundamental Research Funds for the Central Universities(Grant No.2020kfy XJJS039) the China Manned Space Project(Grant No.CMSCSST-2021-B11) 

主　　题：cosmological neutrinos neutrino astronomy high energy astrophysics gamma-ray bursts cosmic rays 

摘      要：Recently,the B.O.A.T.(“brightest of all time)gamma-ray burst,dubbed GRB 221009A,was detected by various ***,the GRB presented very-high-energy(VHE,energy above 0.1 Te V)gamma-ray emission with energy extending above 10 Te V,as reported by the Large High Altitude Air Shower Observatory(LHAASO).We here demonstrate that the VHE and especially10 Te V emission may originate from the internal hadronic dissipation of the GRB,without the need of invoking any exotic processes as suggested by some previous *** possible prompt origin of LHAASO photons may imply the first detection of the GRB prompt phase in the VHE *** also discuss the constraints on the properties of the GRB ejecta from multiwavelength and multi-messenger observations,which favors a magnetically dominated GRB *** suggested Poynting-flux-dominated GRB ejecta in this work supports the Blandford&Znajek(BZ)mechanism as the possible central engine model of GRB,as well as the possible strong magnetic dissipation and acceleration.