Periodic Dips in XTE J1716-389

Details Periodic Dips in XTE J1716-389 Periodic Dips in XTE J1716-389

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.3912w&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #39.12; Bulletin of the American Astronomical Society, Vol. 31, p.1427

Astronomy and Astrophysics

Astronomy

3

Scientific paper

We have analyzed four years of RXTE/ASM 2-12 keV light curve and about 200 ks PCA data for XTE J1716-389. The ASM light curve shows the source to have generally persisted at an intensity of 25 mCrab for about four years. Despite its relatively low intensity, it exhibits variability, seen as prominent dips in the ASM light curve, which may have an associated period of 100 days. The intensity in the dips may decrease to less than 10% of the average count rate and the total duration of a dip may be as much as 40 days. We will present the ASM light curve and the PCA spectral and timing behavior of this source. Possible mechanisms for the observed periodic modulation will be discussed. Support for this work was provided in part by NASA Contract NAS5-30612.

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