{
  "bibcode": "2024GCN.38110....1S",
  "format": "text/plain",
  "subject": "GRB 241105A: Swift/UVOT Detection",
  "createdOn": 1730985533943,
  "body": "M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 241105A\n38.4 ks after the Fermi trigger (GCN Circ. 38085). A faint fading source\nis detected consistent with the XRT position (Kennea et al., GCN Circ. 38098)\nand the reported optical counterparts (Julakanti et al., GCN Circ. 38088, Izzo, \nGCN. Circ. 38097, Wei et al., GCN Circ. 38099, Hu et al., GCN Circ 38106).\n\nThe preliminary UVOT position is:\n    RA  (J2000) =  04:24:58.96 =  66.24568 (deg.)\n    Dec (J2000) = -49:45:09.8  = -49.75271 (deg.)\nwith an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).\n  \nPreliminary 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nwhite            38363        67383         4551      21.46+/-0.11\nwhite            90644       106641         4612            >22.76\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.011 in the direction of the burst\n(Schlegel et al. 1998).",
  "submittedHow": "web",
  "circularId": 38110,
  "eventId": "GRB 241105A",
  "submitter": "Mike Siegel at PSU/Swift MOC <mhs18@psu.edu>"
}