Swift/XRT detection of an X-ray flare and jet emission from Cir X-1
Abstract
Following the detection of a brightening and several X-ray bursts of Cir X-1 (ATel #2608,#2643,#2650,#2651,#2653; Linares et al. arXiv:1006.1379), the source has returned to low flux level since June based on observations taken with RXTE/ASM and MAXI/GSC. We examined the Swift/XRT imaging mode data taken on 2010 June 6 and June 10. On June 6 (at orbital phase 0.8; defined by Stewart et al. 1993), the 0.3-10 keV XRT count rate of Cir X-1 is about 0.07 c/s while it brightened to 0.8 c/s on June 10 (at phase 0.03).
- Publication:
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The Astronomer's Telegram
- Pub Date:
- June 2010
- Bibcode:
- 2010ATel.2671....1K
- Keywords:
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- X-ray;
- Binaries;
- Neutron Stars;
- Transients