{
  "bibcode": "2021GCN.30140....1C",
  "body": "C. Cai, S. L. Xiong, Y. Huang, S. L. Xie, S. Xiao, Y. Zhao, J. C. Liu,\nC. Y. Li, Y. Q. Zhang, W. C. Xue, C. Zheng, Z. W. Guo, X. Y. Zhao,\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,\nX. Y. Song, G. 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\n\nRegarding the new magnetar SGR J1555.2-5402 discovered by Swift/BAT \n(GCN #30120), there was no GECAM in-flight trigger or on-ground automated \nblind search trigger around the BAT trigger time (2021-06-03T09:45:46). \nThus, we implemented a targeted search for sub-threshold burst signals \nfrom +/-35 s around BAT trigger time, using an improved coherent search \nalgorithm (C. Cai, In preparation, L. Blackburn et al.). \n\n\nFrom the targeted search, we found a short soft burst at \n2021-06-03T09:45:46.670, with the most significant timescale of 10 ms. \nIts location is consistent with the Swift/BAT position (GCN #30120) and \nthe spectrum is soft (Band function with Epeak = 70 keV, alpha = -1.9, \nbeta = -3.7). We conclude this bursts is from SGR J1555.2-5402.\n\nThe GECAM light curve could be found here:\nhttp://twiki.ihep.ac.cn/pub/GECAM/GRBList/76412746.67energys.pdf\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": 30140,
  "createdOn": 1623054344000,
  "email": "caice@ihep.ac.cn",
  "subject": "GECAM Sub-Threshold Detection of new magnetar Swift SGR J1555.2-5402",
  "submitter": "Ce Cai at IHEP  <caice@ihep.ac.cn>"
}