Image Details
Caption: Figure 5.
Characteristic radii of a dirty fireball as a function of the dimensionless entropy η, assuming Lγ,iso = 1048 erg s−1, as relevant to EP240414a. The line styles have the same meanings as in Figure 1, and the same fiducial parameters are adopted except for the luminosity.
© 2026. The Author(s). Published by the American Astronomical Society.