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GCN Circular 28541

Swift-XRT observations of IceCube 200929A
2020-10-01T16:07:37Z (3 years ago)
Timothee Gregoire at Penn State <>
P.A. Evans (U. Leicester), J.A. Kennea (PSU), H. A. Ayala Solares (PSU),
D.F. Cowen (PSU), J. DeLaunay (PSU), D. B. Fox (PSU), A. Keivani (Columbia U.),
J.P. Osborne (U. Leicester), T. Gregoire (PSU) report:

Swift observed the field of IceCube 200929A (GCN Circ. 28532) between 22:37:07
2020 September 29 and 00:11:03 on 2020 September 30, collecting a total of 1.4 ks of
cleaned photon counting (PC) mode data. The observations used a 3-point tiling
pattern with a radius of ~0.2 degrees.

We found 1 X-ray source, as detailed below, which is a known X-ray source,
consistent with catalogued fluxes. We therefore do not claim it as the likely
counterpart to IceCube 200929A

The 3-sigma upper limit in the field was in the range 9-10 x 10^-3 ct/sec.

The detected source was:

Source no:   1
RA (J2000):  28.84047 [degrees] = 01h 55m 21.71s
Dec (J2000): +2.9565 [degrees] = +02d 57' 23.4"
Error:       +5.0 [arcsec, 90% conf. radius]
Count rate (0.3-10 keV): 0.014 (+0.008, -0.006) ct s-1
Flux (0.3-10 keV):       5.8 (+3.5, -2.5) x 10-13 erg cm-2 s-1
Note: This is 9.57" from the SIMBAD object 1RXS J015522.1+025731
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