Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2576....1m&link_type=abstract
The Astronomer's Telegram, #2576
Astronomy and Astrophysics
Astronomy
3
X-Ray, Request For Observations, Binaries, Neutron Stars, Pulsars, Transients
Scientific paper
RXTE continues to perform pointed observations of the accreting millisecond X-ray pulsar SWIFT J1749.4-2807 (ATEL #2548, #2565, #2567), known to be in a binary system with 8.82 hr orbital period (ATEL #2568, #2569). The RXTE PCA X-ray light curve shows a steady decline, at a rate of about 1 mCrab per day, with two clear dips in the X-ray light curve. When the X-ray light curve is folded on the X-ray orbital period (ATEL #2569), the dips occur near orbital longitude 90 degrees (as measured from the ascending node).
Markwardt Craig B.
Pereira David
Smith Edward
Strohmayer Tod E.
Swank Jean H.
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