TITLE: GCN CIRCULAR NUMBER: 43025 SUBJECT: EP-WXT trigger 01709249380: KAIT confirmation of a stellar flare DATE: 25/12/07 22:39:57 GMT FROM: Weikang Zheng at UC Berkeley <weikang@berkeley.edu> WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and Alexei V. Filippenko (UCB) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, automatically responded to the EP-WXT trigger 01709249380 (Li et al. GCN 43021) starting at 09:30 UT, about 11 minutes after the trigger. A set of clear (roughly R) filter images were obtained and lasted for ~2 hours. We performed the photometry on the suggested flare star 2MASS J05100460-0428037 and see its brightness decreased from ~10.8 mag to ~11.2 mag in about 15 minutes, then remained ~11.2 mag afterward, thus confirming the EP X-ray trigger is related to the stellar flare. Our result also confirms the observations from Perez-Garcia et al. (GCN 43022) who reported similar decrease in mag from the flare star. View this GCN Circular online at https://gcn.nasa.gov/circulars/43025. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...