... 1999-2004[*]
Appendices A and B are only available in electronic form at http://www.edpsciences.org
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...[*]
Tables 1 to 3 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/447/245
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... important[*]
This failure of the simple broken power law is most evident for observations P50110/53 (2002.05.06:00), P60090/05 (2002.05.06:02), P60090/07 (2002.05.31:23) and P60090/15 (2002.09.20:16). These data are characterized by $\Gamma_1\ga 3$, i.e., they are amongst the softest in our sample and there is a clear thermal component present. As our main interest in this section is on the behavior of the harder spectrum, we ignored the data below 5 keV for these two observations. Above that energy, the spectrum could again be well described by a broken power law. Additionally, there are two peculiar observations, P50110/07 (2000.06.02:05) and P50110/10 (2000.07.15:00). In these observations, $\Gamma_1\sim \Gamma_2$ (but not equal!) and when both power law indices and the Fe line parameters are left free, the uncertainties of both power law indices are very large, the break energy in these observations converges to $\sim$5.5 keV and the energy of the Gaussian is found close to 5.5 keV with a width in excess of 1 keV, effectively smoothing out the effect of the break. Rather than forcing the power law indices to some (arbitrary) value, we have decided to omit these two observations from the following analysis, although they are contained in Table 1.
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...diskpn[*]
The eqpair model has a toggle that allows one to calculate the flux of solely the seed photon component.
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... important[*]
PCA spectra were not deadtime corrected as the spectral shape is not influenced by the deadtime correction and as good indicators for the PCA deadtime are not available for the time since the failure of the Xe layer of PCU0, which also changed the deadtime behavior of that PCU.
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Copyright ESO 2006