GRB 190828A: MAXI/GSC detection
Abstract
The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 07:58:01 UT on 2019 August 28. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (58.011 deg, 46.448 deg) = (03 52 02, +46 26 52) (J2000) with a 90% C.L. statistical error of 0.25 deg and an additional systematic uncertainty of 0.1 deg (90% containment radius). Without assumptions on the source constancy, we obtain a rectangular error box for the transient source with the following corners: (56.303, 46.041) deg = (03 45 12, +46 02 27) (J2000) (56.644, 45.605) deg = (03 46 34, +45 36 17) (J2000) (60.044, 46.816) deg = (04 00 10, +46 48 57) (J2000) (59.724, 47.262) deg = (03 58 53, +47 15 43) (J2000) The X-ray flux averaged over the scan was 193 +- 27 mCrab (4.0-10.0keV, 1 sigma error).
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2019
- Bibcode:
- 2019GCN.25502....1S