{
  "createdOn": 1726850423544,
  "circularId": 37578,
  "subject": "EP240919a / GRB 240919A: KAIT optical upper limit",
  "eventId": "EP240919a",
  "submitter": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
  "body": "WeiKang Zheng (UCB), Xuhui Han (NAOC), Pinpin Zhang (NAOC) and\n\nAlexei V. Filippenko (UCB) report on behalf of the KAIT GRB team:\n\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at\n\nLick Observatory, responded to EP240919a/GRB 240919A (Liang et al.,\n\nGCN 37561; Liang et al., GCN Circ. 37563; Rodi et al., GCN 37572;\n\nWang et al., GCN 37574) starting at 03:03 UT, Sep 20th, ~12.7\n\nhours after the trigger. A set of 30x60s images were obtained in\n\nthe clear (roughly R) filters. Preliminary analysis do not reveal\n\nany new optical counterpart candidate within the EP-FXT error\n\ncircle of the X-ray counterpart (Liang et al., GCN 37561) neither\n\nin single image, nor in the co-add images. The typical limiting\n\nmagnitude of our single clear image is about 19.5 mag, and about\n\n20.5 mag in the co-add image.\n",
  "submittedHow": "email-legacy",
  "bibcode": "2024GCN.37578....1Z"
}