The Astrophysical Journal (Jan 2025)
Evidence of Minijet Emission in a Large Emission Zone from a Magnetically Dominated Gamma-Ray Burst Jet
- S.-X. Yi,
- C.-W. Wang,
- X. Shao,
- R. Moradi,
- H. Gao,
- B. Zhang,
- S.-L. Xiong,
- S.-N. Zhang,
- W.-J. Tan,
- J.-C. Liu,
- W.-C. Xue,
- Y.-Q. Zhang,
- C. Zheng,
- Y. Wang,
- P. Zhang,
- Z.-H. An,
- C. Cai,
- P.-Y. Feng,
- K. Gong,
- D.-Y. Guo,
- Y. Huang,
- B. Li,
- X.-B. Li,
- X.-Q. Li,
- X.-J. Liu,
- Y.-Q. Liu,
- X. Ma,
- W.-X. Peng,
- R. Qiao,
- L.-M. Song,
- J. Wang,
- P. Wang,
- Y. Wang,
- X.-Y. Wen,
- S. Xiao,
- Y.-B. Xu,
- S. Yang,
- Q.-B. Yi,
- D.-L. Zhang,
- F. Zhang,
- H.-M. Zhang,
- J.-P. Zhang,
- Z. Zhang,
- X.-Y. Zhao,
- Y. Zhao,
- S.-J. Zheng
Affiliations
- S.-X. Yi
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- C.-W. Wang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- X. Shao
- Department of Astronomy, Beijing Normal University , Beijing 100875, People’s Republic of China ; [email protected]
- R. Moradi
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- H. Gao
- ORCiD
- Department of Astronomy, Beijing Normal University , Beijing 100875, People’s Republic of China ; [email protected]
- B. Zhang
- ORCiD
- Nevada Center for Astrophysics, University of Nevada Las Vegas , NV 89154, USA; Department of Physics and Astronomy, University of Nevada Las Vegas , NV 89154, USA
- S.-L. Xiong
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- S.-N. Zhang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- W.-J. Tan
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- J.-C. Liu
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- W.-C. Xue
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Y.-Q. Zhang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- C. Zheng
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Y. Wang
- ORCiD
- ICRANet , Piazza della Repubblica 10, I-65122 Pescara, Italy; ICRA, Dipartamento di Fisica, Sapienza Università di Roma , Piazzale Aldo Moro 5, I-00185 Rome, Italy; INAF , Osservatorio Astronomico d’Abruzzo, Via M. Maggini snc, I-64100 Teramo, Italy
- P. Zhang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; College of Electronic and Information Engineering, Tongji University , Shanghai 201804, People’s Republic of China
- Z.-H. An
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- C. Cai
- ORCiD
- College of Physics and Hebei Key Laboratory of Photophysics Research and Application, Hebei Normal University , Shijiazhuang, Hebei 050024, People’s Republic of China
- P.-Y. Feng
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- K. Gong
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- D.-Y. Guo
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- Y. Huang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- B. Li
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- X.-B. Li
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- X.-Q. Li
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- X.-J. Liu
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- Y.-Q. Liu
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- X. Ma
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- W.-X. Peng
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- R. Qiao
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- L.-M. Song
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- J. Wang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- P. Wang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- Y. Wang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- X.-Y. Wen
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- S. Xiao
- Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University , Guiyang 550001, People’s Republic of China
- Y.-B. Xu
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- S. Yang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- Q.-B. Yi
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; School of Physics and Optoelectronics, Xiangtan University , Yuhu District, Xiangtan, Hunan, 411105, People’s Republic of China
- D.-L. Zhang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- F. Zhang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- H.-M. Zhang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- J.-P. Zhang
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Z. Zhang
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- X.-Y. Zhao
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- Y. Zhao
- ORCiD
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]; School of Computer and Information, Dezhou University , Dezhou 253023, People’s Republic of China
- S.-J. Zheng
- Key Laboratory of Particle Astrophysics, Institute of High Energy Physics , Chinese Academy of Sciences, Beijing 100049, People’s Republic of China ; [email protected], [email protected], [email protected]
- DOI
- https://doi.org/10.3847/1538-4357/adcf98
- Journal volume & issue
-
Vol. 985,
no. 2
p. 239
Abstract
The second brightest gamma-ray burst (GRB) in history, GRB 230307A, provides an ideal laboratory to study the mechanism of GRB prompt emission thanks to its extraordinarily high photon statistics and its single-episode activity. Here we demonstrate that the rapidly variable components of its prompt emission compose an overall broad single pulse-like profile. Although these individual rapid components are aligned in time across all energy bands, this overall profile conspires to show a well-defined energy-dependent behavior that is typically seen in single GRB pulses. Such a feature demonstrates that the prompt emission of this burst is from many individual emitting units that are casually linked in a emission site at a large distance from the central engine. Such a scenario is in natural consistency with the internal-collision-induced magnetic reconnection and turbulence framework, which invokes many minijets due to local magnetic reconnection that constantly appear and disappear in a global magnetically dominated jet.
Keywords
