All Figures

	Figure 1: Residuals, in units of , of the 1.4-11.0 keV EPIC-pn spectrum, with respect to the best fit continuum model (right column of Table 1) when the iron line is not included in the fit.
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In the text

Figure 2: 0.6-11.0 keV XMM-Newton combined RGS+EPIC-pn spectrum of SAX J1808.4-3658 ( top) and residuals, in units of , with respect to the best fit model given in the central column of Table 1. Blue refers to the EPIC-pn, red to RGS1 and green to RGS2 data and residuals. The model components are also plotted: the power law as a magenta solid line, diskbb as a light blue dashed line, bbodyrad as an orange dash-dotted line and the K diskline component as a dotted magenta line.

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In the text

Figure 3: ( Top panel) White-noise subtracted PSD of the 63 ks XMM-Newton observation of SAX J1808.4-3658. The time series was sampled at 125 s corresponding to a Nyquist frequency of 4000 Hz. The PSD was obtained averaging about 500 power spectra of  temporal bins (133 s) each. The white-noise (1.97423(25)) was estimated by fitting the spectrum between 2 and 3 kHz with a constant. The spectrum was logarithmically rebinned using a factor 1.01. Spurious frequencies related to the 167 Hz instrumental signal (see Juett & Chakrabarty 2003) were removed from the spectrum. The three components labelled as A, B and C are the Lorentzians used to fit the spectrum. ( Bottom panel) Residuals in units of .

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In the text