ANTARES 200108A: No detection by Swift-XRT
Abstract
Swift performed a series of 19 observations tiling the sky area of the Fermi-LAT / ANTARES coincident event ANTARES 200108A (Turley et al., GCN Circ. 26674). The observations were centred on RA=02h 49m 56.5s, Dec=-18d 05' 17", with a radius of ~50', and were carried out between 22:53:41 UT on Jan 8 until 00:37:14 UT on Jan 9; the detection of GRB 200109A subsequently interrupted the campaign. We gathered between 30 s and 150 s of exposure per tile, with the typical exposure being 110 s. No X-ray sources were found, with a typical upper limit of 0.06 ct/sec (0.3-10 keV). Assuming a standard AGN spectrum (NH=3e20, Gamma=1.7) this corresponds to a 0.3-10 keV observed flux of 2.6 x 10^-12 erg/cm^-2 s^-1.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- January 2020
- Bibcode:
- 2020GCN.26699....1E