Chandra Non-Detection of the Eclipsing Millisecond X-ray Pulsar SWIFT J1749.4-2807
Abstract
We report on a Chandra/ACIS-S observation of the eclipsing accretion-powered millisecond pulsar SWIFT J1749.4-2807, which has recently been reported in a fading outburst during 2010 April 11-21 (ATels #2548, #2561, #2565, #2569, #2576, #2579). Our 1080 s observation was made on April 25 (12:25 TT). Using the pulsar orbital parameters (ATel #2569), the observation midpoint was at an orbital mean longitude of 217 degrees, placing the entire observation well outside of the X-ray eclipse region.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- April 2010
- Bibcode:
- 2010ATel.2585....1C
- Keywords:
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- X-ray;
- Neutron Stars;
- Pulsars;
- Transients