Detection of coherent millisecond pulsations at ~518 Hz in the LMXB Swift J1749.4-2807 (GRB060602B)
Abstract
On April 10th, it was discovered (ATel #2548) using INTEGRAL that the neutron-star X-ray binary Swift J1749.4-2807 (Wijnands et al. 2009, MNRAS, 393, 126) was again in outburst. Using follow-up Swift and INTEGRAL observations the source activity was confirmed (ATel #2548 and #2561). On April 14th, 2010 (20:58:00 UT), RXTE performed a pointed observation of Swift J1749.4-2807. The observation lasted for about 1.6 ksec, at a background-corrected count rate of ~30 cts/sec/PCU (2 PCUs were active during this observation) in the 2-16 keV range.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- April 2010
- Bibcode:
- 2010ATel.2565....1A
- Keywords:
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- X-ray;
- Request for Observations;
- Binaries;
- Neutron Stars;
- Pulsars;
- Transients