Swift-XRT detected a new outburst of Cir X-1
Abstract
Based on the MAXI transient alert on 2016-09-16 16:56:22 UT, we requested a Swift-XRT observation. Swift performed a pointed ~1ks observation on 2016-09-18T13:50:57 in the direction of the neutron star binary system Cir X-1, detecting X-ray activity at a source position RA=230.1695 deg, DEC=-57.16703 deg (Enhanced position with 2.2'' radius uncertainty at 90% confidence level) compatible within errors with Cir X-1.The unabsorbed X-ray flux in the range 0.3-10 keV of (3+/-1)E-11 erg/cm2/s revealed week activity of the source.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- September 2016
- Bibcode:
- 2016ATel.9547....1S
- Keywords:
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- Binary;
- Neutron Star;
- Transient