{
  "bibcode": "2021GCN.30400....1X",
  "body": "S. Xiao, Y. Huang, X. Y. Zhao, S. L. Xiong, W. C. Xue, X. Y. Song, C. Cai,\nS. L. Xie, J. C. Liu, C. Y. Li, Y. Q. Zhang,  Y. Zhao, Z. W. Guo, C. Zheng,\nZ. H. An, C. Chen, G. Chen, W. Chen, M. Gao, K. Gong, D. Y. Guo, J. J. He,\nB. Li, C. Li, J. H. Li, Q. X. Li, X. B. Li, X. Q. Li, Y. G. Li, X. H. Liang,\nJ. Y. Liao, J. C. Liu, X. J. Liu, Y. Q. Liu, F. J. Lu, Q. Luo, X. Ma,\nG. Ou, W. X. Peng, R. Qiao, D. L. Shi, J. Y. Shi, L. M. Song,\nG. X. Sun, X. L. Sun, Y. L. Tuo, C. W. Wang, J. Z. Wang,\nP. Wang, X. Y. Wen, Y. B. Xu, Y. P. Xu, S. Yang, M. Yao, Q. B. Yi,\nB. X. Zhang, C. Y. Zhang, D. L. Zhang, Fan Zhang, Fei Zhang, H. M. Zhang,\nK. Zhang, P. Zhang, S. N. Zhang, Z. Zhang, S. Y. Zhao, S. J. Zheng,\nX. Zhou (IHEP), report on behalf of GECAM team:\n\nDuring the commissioning phase, GECAM-B was triggered in-flight by\na bright short burst (trig# 79317211) at 2021-07-07T00:33:31.700 UTC (T0),\nwhich was also observed by Fermi/GBM (trig# bn210707023).\nIts alert data was promptly downlinked to the ground through the\nshort message service of BeiDou Navigation Satellite System (BDS).\nThe time latency of the first BeiDou message relative to the trigger time\nis about 1 minute.\n\nAccording to the BDS alert data, this burst mainly consists of\ntwo overlapping pulses with a duration of about 100 ms.\nUsing the light curves and spectrum in the BDS alert data, \nGECAM-B localized this burst to the following position (J2000): \nRa: 291.99 deg \nDec: 24.30 deg\nErr: 3.07 deg (1-sigma, statistical only)\nThe current systematic error of location is estimated to be several degrees.\n\nThis location is consistent with SGR J1935+2154 within the error.\n\nThe GECAM light curve could be found here:\nhttp://twiki.ihep.ac.cn/pub/GECAM/GRBList/79317211_lc.png\n\nThe GECAM preliminary location could be found here:\nhttp://twiki.ihep.ac.cn/pub/GECAM/GRBList/gecamb_skymap_bdm_79317211_V01.png\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": 30400,
  "createdOn": 1625629408000,
  "email": "xiaoshuo@ihep.ac.cn",
  "subject": "GECAM detection of a bright short burst from SGR 1935+2154",
  "submitter": "Shuo Xiao at IHEP  <xiaoshuo@ihep.ac.cn>",
  "eventId": "SGR 1935+2154"
}