Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341011s&link_type=abstract
American Astronomical Society, AAS Meeting #213, #410.11; Bulletin of the American Astronomical Society, Vol. 41, p.213
Astronomy and Astrophysics
Astronomy
Scientific paper
In recent years, the INTEGRAL and Swift observatories have offered unprecedented high-duty-cycle, hard-X-ray observations of the Galactic plane. This has led to coverage of a number of Be X-ray binary transient outbursts. These include the well known objects EXO 2030+375, 4U 0115+63, V0332+53. Studies of Be transients have generally focused on properties such as the energy and luminosity dependencies of pulse profiles and cyclotron resonances. Recently however, spectral-temporal behavior patterns have emerged in the 2-10-keV X-ray domain revealing color-color space trends analogous to the Z and atoll patterns in LMXBs. In this contribution, we use INTEGRAL and Swift observations to explore Be transients in the hard-X-ray domain on 10^3 second timescales in two energy bands. Several trends are identified. Color-intensity space patterns are found to be correlated with the X-ray color-color, properties, which in turn track m-dot and the power-density spectral characteristics.
Macomb D. J.
Shrader Chris R.
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