We show preliminary results of a comparative spectral and timing analysis of the Galactic Black Hole XTE J1650-500, using data from BeppoSAX. A clear relation is present between the evolution of energy spectra and power spectra. The central frequency of a given QPO is increasing with the softening of the energy spectra. This is consistent with the following picture: the spectral evolution from Hard to Soft is occurring together with a decreasing of the dimension of the Comptonizing corona. This also implies that the effect of bulk inflow vs thermal Comptonization is increasing its importance during the softening of the source.

Evolution of Energy and Power Spectra in XTE J1650-500 with BeppoSAX

Montanari, Enrico
Primo
;
Titarchuk, Lev
Secondo
;
FRONTERA, Filippo
Ultimo
2007

Abstract

We show preliminary results of a comparative spectral and timing analysis of the Galactic Black Hole XTE J1650-500, using data from BeppoSAX. A clear relation is present between the evolution of energy spectra and power spectra. The central frequency of a given QPO is increasing with the softening of the energy spectra. This is consistent with the following picture: the spectral evolution from Hard to Soft is occurring together with a decreasing of the dimension of the Comptonizing corona. This also implies that the effect of bulk inflow vs thermal Comptonization is increasing its importance during the softening of the source.
0735404348
X-ray binary stars, black holes, stellar spectra, Compton effect
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/533061
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