Image Details
Caption: Figure 3.
Top to bottom: unfolded EFE (energy flux) spectra of Stokes I, Q, and U, comparing the spectral shape between HS 2022 (blue) and HS 2023 (green). Spectra are unfolded against a power law with photon index 1.7 for plotting purposes only.
© 2026. The Author(s). Published by the American Astronomical Society.