[vsnet-grb-info 26949] GRB 201214B: Swift-XRT observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29052
SUBJECT: GRB 201214B: Swift-XRT observations
DATE:    20/12/15 15:48:15 GMT
FROM:    Boris Sbarufatti at PSU  <bxs60 at psu.edu>

A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester), K.L. Page (U.
Leicester), A.P. Beardmore (U. Leicester), P. D'Avanzo (INAF-OAB), M.G.
Bernardini (INAF-OAB), E. Ambrosi  (INAF-IASFPA) , B. Sbarufatti (PSU),
D.N. Burrows (PSU) and P.A. Evans (U. Leicester) report on behalf of
the Swift-XRT team:

Swift-XRT has performed follow-up observations of the
Swift/BAT-detected burst GRB 201214B, collecting 5.8 ks of Photon
Counting (PC) mode data between T0+27.2 ks and T0+51.1 ks. 

Eight uncatalogued X-ray sources have been detected, however none of
them is above the RASS limit or shows definitive signs of fading.
Therefore, at the present time we cannot identify which, if any, is the
afterglow. Details of these sources are given below:

Source 1:
  RA (J2000.0):  187.8292  =  12:31:19.02
  Dec (J2000.0): +9.0458  =  +09:02:44.8
  Error: 4.9 arcsec (radius, 90% conf.)
  Count-rate: (2.47 [+1.03, -0.83])e-3 ct s^-1	 
  Distance: 720 arcsec from Swift/BAT position.
  Flux: (4.9 [+2.1, -1.6])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)

Source 2:
  RA (J2000.0):  187.9923  =  12:31:58.15
  Dec (J2000.0): +9.0742  =  +09:04:26.9
  Error: 4.6 arcsec (radius, 90% conf.)
  Count-rate: (2.50 [+0.94, -0.77])e-3 ct s^-1	 
  Distance: 175 arcsec from Swift/BAT position.
  Flux: (8.2 [+3.1, -2.5])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)

Source 3:
  RA (J2000.0):  187.8467  =  12:31:23.21
  Dec (J2000.0): +9.1051  =  +09:06:18.5
  Error: 4.6 arcsec (radius, 90% conf.)
  Count-rate: (1.57 [+0.86, -0.65])e-3 ct s^-1	 
  Distance: 693 arcsec from Swift/BAT position.

Source 4:
  RA (J2000.0):  188.1338  =  12:32:32.10
  Dec (J2000.0): +9.1148  =  +09:06:53.1
  Error: 6.0 arcsec (radius, 90% conf.)
  Count-rate: (1.89 [+0.85, -0.67])e-3 ct s^-1	 
  Distance: 440 arcsec from Swift/BAT position.
  Flux: (5.9 [+2.6, -2.1])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)

Source 5:
  RA (J2000.0):  188.1013  =  12:32:24.32
  Dec (J2000.0): +9.1072  =  +09:06:26.1
  Error: 6.1 arcsec (radius, 90% conf.)
  Count-rate: (1.49 [+0.76, -0.59])e-3 ct s^-1	 
  Distance: 333 arcsec from Swift/BAT position.
  Flux: (5.4 [+2.7, -2.1])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)

Source 6:
  RA (J2000.0):  188.0148  =  12:32:3.54
  Dec (J2000.0): +8.9310  =  +08:55:51.5
  Error: 5.2 arcsec (radius, 90% conf.)
  Count-rate: (2.02 [+0.86, -0.69])e-3 ct s^-1	 
  Distance: 415 arcsec from Swift/BAT position.

Source 7:
  RA (J2000.0):  187.9055  =  12:31:37.31
  Dec (J2000.0): +8.9889  =  +08:59:19.9
  Error: 5.0 arcsec (radius, 90% conf.)
  Count-rate: (1.93 [+0.94, -0.73])e-3 ct s^-1	 
  Distance: 493 arcsec from Swift/BAT position.
  Flux: (3.7 [+1.8, -1.4])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)

Source 9:
  RA (J2000.0):  187.9206  =  12:31:40.95
  Dec (J2000.0): +9.0086  =  +09:00:31.1
  Error: 5.3 arcsec (radius, 90% conf.)
  Count-rate: (8.0 [+6.0, -4.2])e-4 ct s^-1   
  Distance: 417 arcsec from Swift/BAT position.

A catalogued source was also detected.

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/00021407.

This circular is an official product of the Swift-XRT team.