TITLE: GCN CIRCULAR NUMBER: 37109 SUBJECT: EP-WXT trigger 01709018832: SVOM/C-GFT observations of the star flare DATE: 24/08/09 02:07:10 GMT FROM: Chao Wu at NAOC <wuchao.lamost@gmail.com> Xuhui Han (NAOC), Zhe Kang (CHO), Liping Xin (NAOC),Chao Wu (NAOC), Xiaomeng Lu (NAOC), Pinpin Zhang (NAOC), Ruosong Zhang (NAOC)，You Lv (CHO)，Yujie Xiao(NAOC), Yulei Qiu (NAOC), Jing Wang(GXU/NAOC), Zhenwei Li (CHO)，and Jianyan Wei (NAOC) on behalf of SVOM GRB team We observed the field of the fast X-ray transient WXT trigger 01709018832 from the Einstein Probe (Jiang et al. GCNC 37090) starting at 14:46 UT, August 7, 2024, ~8.4 hr after the trigger with C-GFT (Chinese Ground Follow-up Telescope in SVOM mission) in System Test Mode (STM). C-GFT is located at Jilin (long.=126.33 deg, lat.= 43.8243778 deg), Changchun Observatory, National Astronomical Observatories, CAS. It has FOV of 1.28 deg x 1.28 deg with a 4k*4k CMOS detector mounted on the primary focus of 1.2-meter-aperure telescope. A series of g,r,and i band images were obtained during 18 min observation. The exposure time was 30*10 seconds for each band. Preliminary analysis shows that the brightness of the flare star (Gaia DR3 2445442335531658752) were g=17.6, r=17.1 and i=15.5, without any variation. Comparing with the magnitude (g=18.3, r=17.1, i=15.4 ) from Pan-STARRS(PS1), the r and i band magnitudes are consistent with PS1 catalog, but it was still brightening of 0.6 magnitude at g band. Combined with the results reported by Weikang et al. (GCN 37095), we confirm that the flare star was still at the flaring status after ~8.4 hr from the trigger with g band observations. We thank the observation assistants Wenbo Li and Chunlei Guo at Jilin observatory for their excellent support. View this GCN Circular online at https://gcn.nasa.gov/circulars/37109. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...