GECAM Observations of the Galactic Magnetar SGR J1935+2154 during the 2021 and 2022 Burst Active Episodes. I. Burst Catalog
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2023
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866918255664300032 |
|---|---|
| author | Xie, Sheng-Lun Cai, Ce Yu, Yun-Wei Xiong, Shao-Lin Lin, Lin Zhao, Yi Zhang, Shuang-Nan Song, Li-Ming Wang, Ping Li, Xiao-Bo Xue, Wang-Chen Zhang, Peng Zheng, Chao Zhang, Yan-Qiu Liu, Jia-Cong Wang, Chen-Wei Tan, Wen-Jun Wang, Yue Yu, Zheng-Hang Feng, Pei-Yi Zhang, Jin-Peng Xiao, Shuo Zhao, Hai-Sheng Zhang, Wen-Long Zhang, Yan-Ting Huang, Yue Zhao, Xiao-Yun Ma, Xiang Zheng, Shi-Jie Li, Xin-Qiao Wen, Xiang-Yang Gong, Ke An, Zheng-Hua Zhang, Da-Li Yang, Sheng Liu, Xiao-Jing Zhang, Fan |
| author_facet | Xie, Sheng-Lun Cai, Ce Yu, Yun-Wei Xiong, Shao-Lin Lin, Lin Zhao, Yi Zhang, Shuang-Nan Song, Li-Ming Wang, Ping Li, Xiao-Bo Xue, Wang-Chen Zhang, Peng Zheng, Chao Zhang, Yan-Qiu Liu, Jia-Cong Wang, Chen-Wei Tan, Wen-Jun Wang, Yue Yu, Zheng-Hang Feng, Pei-Yi Zhang, Jin-Peng Xiao, Shuo Zhao, Hai-Sheng Zhang, Wen-Long Zhang, Yan-Ting Huang, Yue Zhao, Xiao-Yun Ma, Xiang Zheng, Shi-Jie Li, Xin-Qiao Wen, Xiang-Yang Gong, Ke An, Zheng-Hua Zhang, Da-Li Yang, Sheng Liu, Xiao-Jing Zhang, Fan |
| contents | Magnetar is a neutron star with an ultrahigh magnetic field ($\sim 10^{14}-10^{15}$ G). The magnetar SGR J1935+2154 is not only one of the most active magnetars detected so far, but also the unique confirmed source of fast radio bursts (FRBs). Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is dedicated to monitor gamma-ray transients all over the sky, including magnetar short bursts. Here we report the GECAM observations of the burst activity of SGR J1935+2154 from January 2021 to December 2022, which results in a unique and valuable data set for this important magnetar. With a targeted search of GECAM data, 159 bursts from SGR J1935+2154 are detected by GECAM-B while 97 bursts by GECAM-C, including the X-ray burst associated with a bright radio burst. We find that both the burst duration and the waiting time between two successive bursts follow lognormal distributions. The period of burst activity is $134\pm20$ days, thus the burst activity could be generally divided into four active episodes over these two years. Interestingly, the hardness ratio of X-ray bursts tends to be softer during these two years, especially during the active episode with radio bursts detected. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_01010 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | GECAM Observations of the Galactic Magnetar SGR J1935+2154 during the 2021 and 2022 Burst Active Episodes. I. Burst Catalog Xie, Sheng-Lun Cai, Ce Yu, Yun-Wei Xiong, Shao-Lin Lin, Lin Zhao, Yi Zhang, Shuang-Nan Song, Li-Ming Wang, Ping Li, Xiao-Bo Xue, Wang-Chen Zhang, Peng Zheng, Chao Zhang, Yan-Qiu Liu, Jia-Cong Wang, Chen-Wei Tan, Wen-Jun Wang, Yue Yu, Zheng-Hang Feng, Pei-Yi Zhang, Jin-Peng Xiao, Shuo Zhao, Hai-Sheng Zhang, Wen-Long Zhang, Yan-Ting Huang, Yue Zhao, Xiao-Yun Ma, Xiang Zheng, Shi-Jie Li, Xin-Qiao Wen, Xiang-Yang Gong, Ke An, Zheng-Hua Zhang, Da-Li Yang, Sheng Liu, Xiao-Jing Zhang, Fan High Energy Astrophysical Phenomena Magnetar is a neutron star with an ultrahigh magnetic field ($\sim 10^{14}-10^{15}$ G). The magnetar SGR J1935+2154 is not only one of the most active magnetars detected so far, but also the unique confirmed source of fast radio bursts (FRBs). Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is dedicated to monitor gamma-ray transients all over the sky, including magnetar short bursts. Here we report the GECAM observations of the burst activity of SGR J1935+2154 from January 2021 to December 2022, which results in a unique and valuable data set for this important magnetar. With a targeted search of GECAM data, 159 bursts from SGR J1935+2154 are detected by GECAM-B while 97 bursts by GECAM-C, including the X-ray burst associated with a bright radio burst. We find that both the burst duration and the waiting time between two successive bursts follow lognormal distributions. The period of burst activity is $134\pm20$ days, thus the burst activity could be generally divided into four active episodes over these two years. Interestingly, the hardness ratio of X-ray bursts tends to be softer during these two years, especially during the active episode with radio bursts detected. |
| title | GECAM Observations of the Galactic Magnetar SGR J1935+2154 during the 2021 and 2022 Burst Active Episodes. I. Burst Catalog |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2307.01010 |