Image Details
Caption: Figure 3.
The predicted neutrino spectrum for the Circinus Galaxy from the disk–corona model (solid black) is compared to the 68% uncertainty regions of the best-fit spectra assuming the disk–corona scenario (hatched) and a power law (shaded). The energy range corresponds to the central 68% of events contributing to the total TS values. The 90% confidence level upper limits of power-law analysis for E−2 (dashed blue) and E−3 (dashed–dotted purple) fluxes, as well as the model analysis (solid gray), are shown. The post-trial statistical significance for the Circinus Galaxy is 1.8σ.
© 2026. The Author(s). Published by the American Astronomical Society.