{
  "bibcode": "2021GCN.31251....1L",
  "body": "C. Y. Li, W. C. Xue, S. Xiao, Y. Q. Zhang, S. L. Xiong, C. Cai, \nP. Zhang, S. L. Xie, X. Y. Zhao, Y. Huang, X. Y. Song,\nJ. C. Liu,  Y. Zhao, Z. W. Guo, C. Zheng, C. W. Wang, \nQ. B. Yi, B. X. Zhang,  W. X. Peng, R. Qiao, D. Y. Guo, X. B. Li, \nX. Ma, L. M. Song, P. Wang, J. Wang, Z. Zhang, S. J. Zheng, W. Chen, \nJ. J. He, G. Y. Zhao, Y. Q. Du, H. Wu, J. Liang, Q. Luo, X. L. Zhang, \nH. M. Zhang, Z. H. An, M. Gao, K. Gong, B. Li, C. Li, J. H. Li, \nX. Q. Li, Y. G. Li, X. H. Liang, X. J. Liu, Y. Q. Liu, X. L. Sun, \nY. L. Tuo, J. Z. Wang, X. Y. Wen, Y. B. Xu, Y. P. Xu, S. Yang, \nC. Y. Zhang, D. L. Zhang, Fan Zhang, Fei Zhang,\nX. Zhou, F. J. Lu, S. N. Zhang (IHEP)\nreport on behalf of GECAM team:\n\nDuring the commissioning phase, GECAM-B was triggered in-flight by a long burst, \nGRB 211217A, at 2021-12-17T07:04:30.550 UTC (denoted as T0).\n \nGECAM alert data was downlinked to the ground through the short message\nservice of BeiDou Navigation Satellite System (BDS) within ~60 s after T0.\n\nAccording to the BDS alert data, this burst mainly consists of a broad pulse\nwith a duration of about 10 s. \n\nThe GECAM light curve could be found here:\nhttp://twiki.ihep.ac.cn/pub/GECAM/GRBList/gecamb_lc_grd_all_combine_93423870.png\n\nUsing the automatic on-ground localization pipeline with the BDS alert data, \nGECAM-B localized this burst to the following position (J2000): \nRa: 356.78 deg \nDec: 24.1 deg\nErr: 8.23 deg (1-sigma, statistical only)\nThe current systematic error of location is estimated to be several degrees \nwhich could be minimized by the ongoing calibration.\n\nPlease note that all GECAM results here are preliminary. The final analysis\nwill be published in journal papers or GECAM online catalog.\n\nGravitational wave high-energy Electromagnetic Counterpart All-sky Monitor\n(GECAM) mission consists of two small satellites (GECAM-A and GECAM-B) in\nLow Earth Orbit (600 km, 29 deg), launched on Dec 10, 2020 (Beijing Time),\nwhich was funded by the Chinese Academy of Sciences (CAS).",
  "circularId": 31251,
  "createdOn": 1639728599000,
  "email": "xiaoshuo@ihep.ac.cn",
  "subject": "GRB 211217A: GECAM detection",
  "submitter": "Shuo Xiao at IHEP  <xiaoshuo@ihep.ac.cn>",
  "eventId": "GRB 211217A"
}