GCN Circular 37946
Subject
GRB 241029A: Swift-XRT observations
Date
2024-10-29T18:39:18Z (15 days ago)
From
Phil Evans at U of Leicester <pae9@star.le.ac.uk>
Via
email
M.G. Bernardini (INAF-OAB), E. Ambrosi (INAF-IASFPA) , D.N. Burrows
(PSU), M. A. Williams (PSU), S. Dichiara (PSU), J.P. Osborne (U.
Leicester), K.L. Page (U. Leicester), M. Capalbi (INAF-IASFPA) and P.A.
Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Swift-XRT has performed follow-up observations of the
SVOM/ECLAIRs-detected burst GRB 241029A, collecting 747 s of Photon
Counting (PC) mode data between T0+29.1 ks and T0+30.0 ks.
One uncatalogued X-ray source has been detected consistent with being
within 434 arcsec of the SVOM/ECLAIRs position, it is below the RASS
limit and shows no definitive signs of fading. The X-ray position is
consistent with the optical transient reported by Jiang et al. (GCN
37937), Lin et al., (GCN 37939), Jiang et al. (GCN 37940), Francile et
al. (GCN 37941), Ackley et al. (GCN 37943), Odeh et al. (GCN 37944).
Source 1:
RA (J2000.0): 325.3343 = 21:41:20.23
Dec (J2000.0): +5.0814 = +05:04:53.0
Error: 3.4 arcsec (radius, 90% conf. [Enhanced position])
Count-rate: 0.080 +/- 0.012 ct s^-1
Distance: 87 arcsec from SVOM/ECLAIRs position.
Flux: (2.60 +/- 0.39)e-12 erg cm^-2 s^-1 (observed, 0.3-10 keV)
The results of the XRT-team automatic analysis of the XRT observations,
including a position-specific upper limit calculator, are available at
https://www.swift.ac.uk/ToO_GRBs/00021726.
This circular is an official product of the Swift-XRT team.