Extended Data Fig. 2: Distribution of the squared angular distance between the nominal source position and the reconstructed arrival direction of events and the estimated background.
From: Proton acceleration in thermonuclear nova explosions revealed by gamma rays
Distribution of the squared angular distance between the nominal source position and the reconstructed arrival direction of events (black crosses) and the estimated background (gray shaded area). Vertical dashed line represents the angular cut below which the number of background and excess events as well as the statistical significance of the detection are given (inset panel). Error bars represent 1-sigma statistical uncertainties in the data points.
