Figure 1: Blackbody model fits to EPIC-pn (upper pair), EPIC-MOS (middle pair) and RGS spectra of RBS1223. The four RGS spectra were combined in the plot for clarity. While the pure blackbody model fit (left) is unacceptable, including a broad Gaussian absorption line at 300 eV (right) can reproduce the data. The residuals (bottom panels) show consistent behavior for all instruments. | |
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Figure 2: Blackbody model fits with (bottom) and without absorption line to the ACIS-S spectrum of RBS1223. | |
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Figure 3: Pulse profile of RBS1223 in the 0.12-0.5 keV (soft) and 0.5-1.0 keV (hard) energy bands, together with the ratio hard/soft, obtained from the EPIC-pn data of the Jan. 2003 observation. | |
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