Fig. 2.
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Fermi-LAT smoothed residual map with a bicubic interpolation of our ROI centred on SN 2023ixf for 1 month of observations after T0. Left: standard significance map as implemented in fermipy (Wood et al. 2017). White crosses represent 4FGL sources included in the background model, while the yellow diamond is the nominal position of SN 2023ixf. Right: data–model deviation estimate employing a PS map of the same ROI saturated at PS = 6.24 (equivalent to a 5σ threshold; Bruel 2021).
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