GRB 210102B: MAXI/GSC detection
Abstract
The MAXI/GSC nova alert system triggered on a bright uncatalogued X-ray transient source at 2021-01-02T09:03:48 UT. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (353.323 deg, -21.086 deg) = (23 33 18, -21 05 10) (J2000) with a statistical 90% C.L. circular error region with a radius of 0.5 deg. There is an additional systematic uncertainty of 0.1 deg (90% containment radius). The X-ray flux averaged over the scan was 238 +- 31 mCrab (2.0-4.0keV, 1 sigma error). There was no significant excess flux in the next transit at 10:36 UT with an upper limit of 20 mCrab.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- January 2021
- Bibcode:
- 2021GCN.29223....1G