{
  "subject": "EP241021a: Swift-UVOT detection",
  "submittedHow": "web",
  "circularId": 37990,
  "submitter": "noelklin@umbc.edu",
  "eventId": "EP241021a",
  "bibcode": "2024GCN.37990....1K",
  "createdOn": 1730329908420,
  "format": "text/plain",
  "body": "N. Klingler (UMBC & NASA-GSFC), S. R. Oates (Lancaster Univ.), and R. Eyles-Ferris (Univ. of Leicester) report on behalf of the Swift-UVOT team:\n\nSwift has performed a follow-up observation of EP 241021a, following the optical re-brightening reported by Quirola-Vasquez et al. (GCN 37930).\n\nSwift-UVOT observed the source in the U-band for 4.3 ks, between 2024-10-29 09:32:55 UTC and 2024-10-29 17:19:10 UTC, which corresponds to t0 + 8.18 days and t0 + 8.51 days, respectively.  A source is detected at the position of the optical transient (01:55:23.41 +05:56:18.01; Fu et al.; GCN 37840) with (AB) magnitude U = 21.83 +/- 0.23, and a detection significance of 5.2 sigma.  No correction has been made for the expected extinction corresponding to E(B-V) of 0.052.\n\nThis circular is an official product of the Swift-UVOT team."
}