TITLE: GCN CIRCULAR NUMBER: 36825 SUBJECT: EP240703a: KAIT optical upper limit DATE: 24/07/05 01:45:56 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, responded to the fast X-ray transient EP240703a

from the Einstein Probe (Wang et al. GCNC 36807) starting at 1.28 days

after the trigger. A set of 30x60s images were obtained in the clear

(roughly R) filters. Preliminary analysis do not reveal any optical

counterpart candidate within the 3 arcmin radius EP-WXT error box

(Wang et al. GCN 36807) neither in single image, nor in the co-add

images, consistent with the reports from Aryan et al. (GCN 36819),

An et al. (GCN 36820), Bochenek & Perley (GCN 36821), Fernandez-Garcia

et al. (GCN 36822) and Volnova et al. (GCN 36824). The typical limiting

magnitude of our single clear image is about 19.0 mag.

View this GCN Circular online at https://gcn.nasa.gov/circulars/36825. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...