{
  "createdOn": 1779952395789,
  "eventId": "EP260527a",
  "bibcode": "2026GCN.44720....1L",
  "submittedHow": "web",
  "submitter": "Huali Li at at NAOC, SVOM <lhl@nao.cas.cn>",
  "body": "H. L. Li, C. Wu, Y. L. Qiu, L. P. Xin, Y. N. Ma, Z. H. Yao, J. R. Xu, X. H. Han, J. Wang, Y. Xu, P. P. Zhang, W. J. Xie, Y. J. Xiao, H. B. Cai, L. Lan, J. S. Deng, J. Y. Wei (NAOC) and J. Palmerio (CEA/Irfu) report on behalf of the SVOM/VT team.\n\nSVOM/VT performed ToO observations to the field of EP260527a triggered by Einstein Probe (Yang et al., GCN 44718). The observation started at 2026-05-28T02:57:38 UTC, 20.63 hours post trigger in the VT_B (400-650 nm) and VT_R (650-1000 nm) channels simultaneously.\n\nThe optical counterpart (Aguilar-Ruiz et al., GCN 44719) was detected by VT in both channels.\nThe following measurements are in the AB magnitude without correction for Galactic extinction:\n\nMid time | Band | Exposure Time | Brightness\n21.76 h    VT_B     29*50 s     22.32 +/- 0.22 mag\n21.81 h    VT_R     23*50 s     21.77 +/- 0.19 mag\n\nThe Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. VT was jointly developed by Xi'an Institute of Optics and Precision Mechanics (XIOPM), CAS and National astronomical observatories (NAOC), CAS.",
  "format": "text/plain",
  "circularId": 44720,
  "subject": "EP260527a: SVOM/VT optical observation"
}