What happens inside a star when a hidden symmetry suddenly appears?

When a conformal Killing vector — a geometric symmetry that rescales spacetime — suddenly switches on inside a self-gravitating fluid sphere, it leaves measurable traces in physical variables like pressure, density, and heat flow. The authors track these signatures for both ordinary and dissipating fluids, identifying characteristic patterns that could serve as fingerprints of such symmetry emergence during stellar collapse or compact-object formation.