GRB 240529A: A Tale of Two Shocks
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arXiv
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| Format: | Preprint |
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2024
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| author | Sun, Tian-Rui Geng, Jin-Jun Yan, Jing-Zhi Hu, You-Dong Wu, Xue-Feng Castro-Tirado, Alberto J. Yang, Chao Ping, Yi-Ding Hu, Chen-Ran Xu, Fan Gao, Hao-Xuan Jiang, Ji-An Zhu, Yan-Tian Xue, Yongquan Pérez-García, Ignacio Wu, Si-Yu Fernández-García, Emilio Caballero-García, María D. Sánchez-Ramírez, Rubén Guziy, Sergiy Olivares, Ignacio del Pulgar, Carlos Jesus Pérez Castellón, A. Castillo, Sebastián Xiong, Ding-Rong Pandey, Shashi B. Hiriart, David García-Segura, Guillermo Lee, William H. Carrasco-García, I. M. Park, Il H. Meintjes, Petrus J. van Heerden, Hendrik J. Martín-Carrillo, Antonio Hanlon, Lorraine Zhang, Bin-Bin Maury, Alain Hernández-García, L. Gritsevich, Maria Rossi, Andrea Maiorano, Elisabetta Cusano, Felice D'Avanzo, Paolo Ferro, Matteo Melandri, Andrea De Pasquale, Massimiliano Brivio, Riccardo Fang, Min Fan, Lu-Lu Hu, Wei-Da Wan, Zhen Hu, Lei Zuo, Ying-Xi Tang, Jin-Long Zhang, Xiao-Ling Zheng, Xian-Zhong Li, Bin Luo, Wen-Tao Liu, Wei Wang, Jian Zhang, Hong-Fei Liu, Hao Gao, Jie Liang, Ming Wang, Hai-Ren Yao, Da-Zhi Cheng, Jing-Quan Zhao, Wen Dai, Zi-Gao |
| author_facet | Sun, Tian-Rui Geng, Jin-Jun Yan, Jing-Zhi Hu, You-Dong Wu, Xue-Feng Castro-Tirado, Alberto J. Yang, Chao Ping, Yi-Ding Hu, Chen-Ran Xu, Fan Gao, Hao-Xuan Jiang, Ji-An Zhu, Yan-Tian Xue, Yongquan Pérez-García, Ignacio Wu, Si-Yu Fernández-García, Emilio Caballero-García, María D. Sánchez-Ramírez, Rubén Guziy, Sergiy Olivares, Ignacio del Pulgar, Carlos Jesus Pérez Castellón, A. Castillo, Sebastián Xiong, Ding-Rong Pandey, Shashi B. Hiriart, David García-Segura, Guillermo Lee, William H. Carrasco-García, I. M. Park, Il H. Meintjes, Petrus J. van Heerden, Hendrik J. Martín-Carrillo, Antonio Hanlon, Lorraine Zhang, Bin-Bin Maury, Alain Hernández-García, L. Gritsevich, Maria Rossi, Andrea Maiorano, Elisabetta Cusano, Felice D'Avanzo, Paolo Ferro, Matteo Melandri, Andrea De Pasquale, Massimiliano Brivio, Riccardo Fang, Min Fan, Lu-Lu Hu, Wei-Da Wan, Zhen Hu, Lei Zuo, Ying-Xi Tang, Jin-Long Zhang, Xiao-Ling Zheng, Xian-Zhong Li, Bin Luo, Wen-Tao Liu, Wei Wang, Jian Zhang, Hong-Fei Liu, Hao Gao, Jie Liang, Ming Wang, Hai-Ren Yao, Da-Zhi Cheng, Jing-Quan Zhao, Wen Dai, Zi-Gao |
| contents | Thanks to the rapidly increasing time-domain facilities, we are entering a golden era of research on gamma-ray bursts (GRBs). In this Letter, we report our observations of GRB 240529A with the Burst Optical Observer and Transient Exploring System, the 1.5-meter telescope at Observatorio Sierra Nevada, the 2.5-meter Wide Field Survey Telescope of China, the Large Binocular Telescope, and the Telescopio Nazionale Galileo. The prompt emission of GRB 240529A shows two comparable energetic episodes separated by a quiescence time of roughly 400 s. Combining all available data on the GRB Coordinates Network, we reveal the simultaneous apparent X-ray plateau and optical re-brightening around $10^3-10^4$ s after the burst. Rather than the energy injection from the magnetar as widely invoked for similar GRBs, the multi-wavelength emissions could be better explained as two shocks launched from the central engine separately. The optical peak time and our numerical modeling suggest that the initial bulk Lorentz factor of the later shock is roughly 50, which indicates that the later jet should be accretion-driven and have a higher mass loading than a typical one. The quiescence time between the two prompt emission episodes may be caused by the transition between different accretion states of a central magnetar or black hole, or the fall-back accretion process. A sample of similar bursts with multiple emission episodes in the prompt phase and sufficient follow-up could help to probe the underlying physics of GRB central engines. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17983 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | GRB 240529A: A Tale of Two Shocks Sun, Tian-Rui Geng, Jin-Jun Yan, Jing-Zhi Hu, You-Dong Wu, Xue-Feng Castro-Tirado, Alberto J. Yang, Chao Ping, Yi-Ding Hu, Chen-Ran Xu, Fan Gao, Hao-Xuan Jiang, Ji-An Zhu, Yan-Tian Xue, Yongquan Pérez-García, Ignacio Wu, Si-Yu Fernández-García, Emilio Caballero-García, María D. Sánchez-Ramírez, Rubén Guziy, Sergiy Olivares, Ignacio del Pulgar, Carlos Jesus Pérez Castellón, A. Castillo, Sebastián Xiong, Ding-Rong Pandey, Shashi B. Hiriart, David García-Segura, Guillermo Lee, William H. Carrasco-García, I. M. Park, Il H. Meintjes, Petrus J. van Heerden, Hendrik J. Martín-Carrillo, Antonio Hanlon, Lorraine Zhang, Bin-Bin Maury, Alain Hernández-García, L. Gritsevich, Maria Rossi, Andrea Maiorano, Elisabetta Cusano, Felice D'Avanzo, Paolo Ferro, Matteo Melandri, Andrea De Pasquale, Massimiliano Brivio, Riccardo Fang, Min Fan, Lu-Lu Hu, Wei-Da Wan, Zhen Hu, Lei Zuo, Ying-Xi Tang, Jin-Long Zhang, Xiao-Ling Zheng, Xian-Zhong Li, Bin Luo, Wen-Tao Liu, Wei Wang, Jian Zhang, Hong-Fei Liu, Hao Gao, Jie Liang, Ming Wang, Hai-Ren Yao, Da-Zhi Cheng, Jing-Quan Zhao, Wen Dai, Zi-Gao High Energy Astrophysical Phenomena Thanks to the rapidly increasing time-domain facilities, we are entering a golden era of research on gamma-ray bursts (GRBs). In this Letter, we report our observations of GRB 240529A with the Burst Optical Observer and Transient Exploring System, the 1.5-meter telescope at Observatorio Sierra Nevada, the 2.5-meter Wide Field Survey Telescope of China, the Large Binocular Telescope, and the Telescopio Nazionale Galileo. The prompt emission of GRB 240529A shows two comparable energetic episodes separated by a quiescence time of roughly 400 s. Combining all available data on the GRB Coordinates Network, we reveal the simultaneous apparent X-ray plateau and optical re-brightening around $10^3-10^4$ s after the burst. Rather than the energy injection from the magnetar as widely invoked for similar GRBs, the multi-wavelength emissions could be better explained as two shocks launched from the central engine separately. The optical peak time and our numerical modeling suggest that the initial bulk Lorentz factor of the later shock is roughly 50, which indicates that the later jet should be accretion-driven and have a higher mass loading than a typical one. The quiescence time between the two prompt emission episodes may be caused by the transition between different accretion states of a central magnetar or black hole, or the fall-back accretion process. A sample of similar bursts with multiple emission episodes in the prompt phase and sufficient follow-up could help to probe the underlying physics of GRB central engines. |
| title | GRB 240529A: A Tale of Two Shocks |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2409.17983 |