GCN Circular 31687
Subject
IceCube-220303A: One X-ray counterpart from Swift/XRT follow up observations
Event
Date
2022-03-05T19:15:25Z (3 years ago)
From
Felicia Krauss at Penn State U <Felicia.Krauss@psu.edu>
Felicia McBride, Derek B. Fox, Doug Cowen, Hugo Ayala Solares, Timoth��e
Gregoire, Jamie Kennea (PSU), Alexis Coleiro (APC), and Phil Evans
(Leicester) report for AMON (https://amon.psu.edu/):
The Neil Gehrels Swift Observatory X-ray Telescope (XRT) observed the
uncertainty region of the IceCube neutrino event IceCube-220303A (GCN
Circ. 31679) on 2022-03-04, between 00:22 and 02:25 UTC.
A 10-point tiling observation centered on the neutrino position was
taken for a total of 4 ksec.
Of the 90% confidence 4.3 sq. degrees uncertainty region, the XRT
observations cover roughly 50% of the central area, but the 50%
uncertainty region almost completely.
��One X-ray candidate counterpart was detected at the coordinates of
R.A.: 267.715732, Dec.: 10.9488175 (J2000.0), which may be consistent
with the source WISEA J175051.31+105645.3 at a redshift of 0.066. The
0.5-10 keV flux of the source is ~5e-13 erg/s/cm^2, but cannot be
constrained well due to the short observation. We have requested
follow-up observations with NuSTAR.
Multiwavelength follow-up observations are encouraged.