تقرير
GRB 210121A: A Typical Fireball Burst Detected by Two Small Missions
| العنوان: | GRB 210121A: A Typical Fireball Burst Detected by Two Small Missions |
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| المؤلفون: | Wang, Xiangyu Ivy, Zheng, Xutao, Xiao, Shuo, Yang, Jun, Liu, Zi-Ke, Yang, Yu-Han, Zou, Jin-Hang, Zhang, Bin-Bin, Zeng, Ming, Xiong, Shao-Lin, Feng, Hua, Song, Xin-Ying, Wen, Jiaxing, Xu, Dacheng, Chen, Guo-Yin, Ni, Yang, Wu, Yu-Xuan, Zhang, Zi-Jian, Cai, Ce, Cang, Jirong, Deng, Yun-Wei, Gao, Huaizhong, Kong, De-Feng, Huang, Yue, Li, Cheng-kui, Li, Hong, Li, Xiao-Bo, Liang, En-Wei, Lin, Lin, Liu, Yihui, Long, Xiangyun, Lu, Dian, Luo, Qi, Ma, Yong-Chang, Meng, Yan-Zhi, Peng, Wen-Xi, Qiao, Rui, Song, Li-Ming, Tian, Yang, Wang, Pei-Yuan, Wang, Ping, Wang, Xiang-Gao, Xu, Sheng, Yang, Dongxin, Yin, Yi-Han, Zeng, Weihe, Zeng, Zhi, Zhang, Ting-Jun, Zhang, Yuchong, Zhang, Zhao, Zhang, Zhen |
| المصدر: | 2021, ApJ, 922, 237 |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena |
| الوصف: | The Chinese CubeSat Mission, Gamma Ray Integrated Detectors (GRID), recently detected its first gamma-ray burst, GRB 210121A, which was jointly observed by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM). This burst is confirmed by several other missions, including \fermi and \textit{Insight}-HXMT. We combined multi-mission observational data and performed a comprehensive analysis of the burst's temporal and spectral properties. Our results show that the burst is relatively special in its high peak energy, thermal-like low energy indices, and large fluence. By putting it to the $E_{\rm p}$-$E_{\rm\gamma, iso}$ relation diagram with assumed distance, we found this burst can be constrained at the redshift range of [0.3,3.0]. The thermal spectral component is also confirmed by the direct fit of the physical models to the observed spectra. Interestingly, the physical photosphere model also constrained a redshift of $z\sim$ 0.3 for this burst, which help us to identify a host galaxy candidate at such a distance within the location error box. Assuming the host galaxy is real, we found the burst can be best explained by the photosphere emission of a typical fireball with an initial radius of $r_0\sim$ 3.2 $\times 10^7$ cm. Comment: ApJ accpeted; 12 pages, 11 figures, 3 tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-4357/ac29bd |
| الوصول الحر: | http://arxiv.org/abs/2107.10452Test |
| رقم الانضمام: | edsarx.2107.10452 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-4357/ac29bd |
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