Shock Breakout · First Light of a Supernova
unseel.com · radiation-mediated shock · τ ≈ c/v · UV & X-ray flash
Shock v 0.03 c
τ above shock 10⁵
Phase
Blast shock
Trapped photons
Opaque envelope
UV / X-ray breakout
Unseel.com · Supernova Shock Breakout