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EnglishWe 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.
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| Data di pubblicazione: | 2007 | |
| Titolo: | Evolution of Energy and Power Spectra in XTE J1650-500 with BeppoSAX | |
| Autori: | Montanari, Enrico; Titarchuk, Lev; Frontera, Filippo | |
| Rivista: | AIP CONFERENCE PROCEEDINGS | |
| Parole Chiave: | X-ray binary stars; black holes; stellar spectra; Compton effect | |
| 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. | |
| Digital Object Identifier (DOI): | 10.1063/1.2774935 | |
| Handle: | http://hdl.handle.net/11392/533061 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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