A disc-corona radiative feedback loop with a time delay produces QPOs at 1/(tau_A+tau_B), and its analytic power spectrum fits AstroSat data of two black hole binaries.
Large Area X-ray Proportional Counter (LAXPC) in Orbit Performance : Calibration, background, analysis software
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abstract
The Large Area X-ray Proportional Counter (LAXPC) instrument on-board AstroSat has three nominally identical detectors for timing and spectral studies in the energy range of 3--80 keV. The performance of these detectors during the five years after the launch of AstroSat is described. Currently, only one of the detector is working nominally. The variation in pressure, energy resolution, gain and background with time are discussed. The capabilities and limitations of the instrument are described. A brief account of available analysis software is also provided.
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Quasi-Periodic Oscillations due to radiative feedback mechanism between the disc and corona
A disc-corona radiative feedback loop with a time delay produces QPOs at 1/(tau_A+tau_B), and its analytic power spectrum fits AstroSat data of two black hole binaries.