scintillate

To send forth light in flashes; sparkle. synonym: flash.

To be scintillating.

To emit sparks; hence, to sparkle or twinkle, as the fixed stars.

Synonyms Sparkle, Glister, etc. (see glare, intransitive verb) coruscate.

To emit sparks, or fine igneous particles.

To sparkle, as the fixed stars.

To give off sparks; to shine as if emanating sparks; to twinkle or glow.

To throw off like sparks.

physics: fluoresce momentarily when struck by a charged particle or high-energy photon

reflect brightly