MAXI/GSC detection of a probable new soft X-ray transient MAXI J1857-086 or renewed activity of Swift J1858.6-0814
Abstract
The MAXI/GSC nova alert system triggered on enhanced soft X-ray emission at 00:52 UT on 2020 February 6. Assuming that the source flux was constant over nine scan transits from 18:40 on February 5 to 08:37 on February 6, we obtain the source position at (R.A., Dec) = (284.318 deg, -8.604 deg) = (18 57 16, -08 36 14) (J2000) with a statistical 90% C.L. elliptical error region with long and short radii of 0.33 deg and 0.21 deg, respectively.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- February 2020
- Bibcode:
- 2020ATel13455....1N
- Keywords:
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- Black Hole;
- Neutron Star;
- Transient