Fig. 6

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Results of imaging and spectral analysis for cluster eFEDS J092121.2+031726 at redshift 0.333 (spectroscopic) as an example. This cluster is detected with ℒext = 478.6 and ℒdet = 1729.8 and has one of the highest S/Ns in our sample. The temperature and soft-band luminosity within 500 kpc are keV and
erg s-1. Upper left: soft-band (0.5–2 keV) eROSITA image. The white circle marks the region of r = 500 kpc. The image is smoothed with a Gaussian with FWHM = 12”. Upper right: Subaru HSC image of the central region in the (ɀ, i, r) bands. Superimposed in white are the X-ray contours. Lower left: spectrum within the 500 kpc region. The spectra and the corresponding responses of the seven TMs are merged for clarity. The total model, ICM model, non X-ray background, and cosmic X-ray background are plotted separately. Lower right: electron density profile obtained from the spectral and imaging analysis. The dashed vertical line shows the R500 of this cluster, 1.1 Mpc, estimated from the L - M scaling relation. The inset images show the result of 2D image fitting. The original soft-band image is on the left, and the residual image is on the right.
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