M31 a040_048: MWhalo + MWhotHalo joint fit
Joint fit of all receipt-published MOS spectra (MOS1=25, MOS2=26); the model explicitly does not include SrcApec.
LocalBubble + O VII + O VIII + Fe-L + MWabs*(CXB + MWhalo + MWhotHalo) + per-spectrum SoftProton; no SrcApec. The QPB of each spectrum is subtracted before grouping; grouping follows the XARTATOMS resolution-plus-net-S/N rule (net S/N ≥ 6, RMF FWHM oversampling ≤ 6).The upper panel shows, in sb_flux (count s^-1 keV^-1 cm^-2 arcmin^-2), all data with errors, the final total model of each spectrum, the global sky components, and the per-spectrum detector-space soft-proton pseudo-SB. The shaded band marks the MOS non-fitted interval 1.4–2.0 keV; the actual fitted ranges are 0.4–1.4 keV and 2.0–7.2 keV.
The lower panel shows Δχ; the error bars are 1σ. The global sky components are shown folded through one representative MOS response; the total model of each of the 51 responses is retained in the plot.
This page publishes only derived figures and a cleaned fit summary; it contains no PHA, QPB, ARF, RMF, event files, absolute data paths, or Sherpa session.