MAXI/GSC detection of a new soft X-ray transient MAXI J1647-227
Abstract
On 14 June 2012, the MAXI/GSC detects enhanced soft X-ray emission at a position:
(R.A., Dec) = (+251.96 deg, -22.75 deg) = (16 47 50, -22 44 59) (J2000) with a statistical uncertainty of 0.54 deg at the 90% confidence limit and an additional systematic uncertainty of 0.1 deg (90% containment radius). There is no bright known X-ray source within the error circle, and we tentatively name the source MAXI J1647-227. The enhanced emission has been recognized since 12 June 2012 from daily images, and the one-day averaged fluxes on 14 June are 23+-6 mCrab in the 2-4 keV band and 33+-7 mCrab in the 4-10 keV band. We note that there is a nearby star forming region Rho Oph dark cloud, separated by about 1 degree from the source.- Publication:
-
The Astronomer's Telegram
- Pub Date:
- June 2012
- Bibcode:
- 2012ATel.4175....1N
- Keywords:
-
- X-ray;
- Binary;
- Black Hole;
- Cataclysmic Variable;
- Neutron Star;
- Star;
- Transient;
- Variables