Spectra from the RGS instruments showing flux (counts s⁻¹keV⁻¹) plotted against wavelength (Å), with associated error bars. RGS1 is represented by a green line and RGS2 by a purple line. Vivid colors indicate the original observation 2, while fainter colors represent observation 1. Key spectral lines, including NeIX, FeXVII, FeXVIII, OVIII, and the OVII triplet, are marked with arrows and annotations.