Self-organized critical characteristics of teraelectronvolt photons from GRB 221009A
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912206550990848 |
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| author | Zhang, Wen-Long Yi, Shuang-Xi Zou, Yuan-Chuan Wang, Fa-Yin Li, Cheng-Kui Xie, Sheng-Lun |
| author_facet | Zhang, Wen-Long Yi, Shuang-Xi Zou, Yuan-Chuan Wang, Fa-Yin Li, Cheng-Kui Xie, Sheng-Lun |
| contents | The very high-energy afterglow in GRB 221009A, known as the ``brightest of all time'' (BOAT), has been thoroughly analyzed in previous studies. In this paper, we conducted a statistical analysis of the waiting time behavior of 172 TeV photons from the BOAT observed by LHAASO-KM2A. The following results were obtained: (I) The waiting time distribution (WTD) of these photons deviates from the exponential distribution. (II) The behavior of these photons exhibits characteristics resembling those of a self-organized critical system, such as a power-law distribution and scale-invariance features in the WTD. The power-law distribution of waiting times is consistent with the prediction of a nonstationary process. (III) The relationship between the power-law slopes of the WTD and the scale-invariant characteristics of the Tsallis q-Gaussian distribution deviates from existing theory. We suggest that this deviation is due to the photons not being completely independent of each other. In summary, the power-law and scale-free characteristics observed in these photons imply a self-organized critical process in the generation of teraelectronvolt photons from GRB 221009A. Based on other relevant research, we propose that the involvement of a partially magnetically dominated component and the continuous energy injection from the central engine can lead to deviations in the generation of teraelectronvolt afterglow from the simple external shock-dominated process, thereby exhibiting the self-organized critical characteristics mentioned above. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_16052 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Self-organized critical characteristics of teraelectronvolt photons from GRB 221009A Zhang, Wen-Long Yi, Shuang-Xi Zou, Yuan-Chuan Wang, Fa-Yin Li, Cheng-Kui Xie, Sheng-Lun High Energy Astrophysical Phenomena The very high-energy afterglow in GRB 221009A, known as the ``brightest of all time'' (BOAT), has been thoroughly analyzed in previous studies. In this paper, we conducted a statistical analysis of the waiting time behavior of 172 TeV photons from the BOAT observed by LHAASO-KM2A. The following results were obtained: (I) The waiting time distribution (WTD) of these photons deviates from the exponential distribution. (II) The behavior of these photons exhibits characteristics resembling those of a self-organized critical system, such as a power-law distribution and scale-invariance features in the WTD. The power-law distribution of waiting times is consistent with the prediction of a nonstationary process. (III) The relationship between the power-law slopes of the WTD and the scale-invariant characteristics of the Tsallis q-Gaussian distribution deviates from existing theory. We suggest that this deviation is due to the photons not being completely independent of each other. In summary, the power-law and scale-free characteristics observed in these photons imply a self-organized critical process in the generation of teraelectronvolt photons from GRB 221009A. Based on other relevant research, we propose that the involvement of a partially magnetically dominated component and the continuous energy injection from the central engine can lead to deviations in the generation of teraelectronvolt afterglow from the simple external shock-dominated process, thereby exhibiting the self-organized critical characteristics mentioned above. |
| title | Self-organized critical characteristics of teraelectronvolt photons from GRB 221009A |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2412.16052 |