A fast X-ray transient with chromatic flares: signatures of violent collisions induced by late-time central engine reactivation

Shao-Yu Fu, Cui-Yuan Dai, Ai-Ling Wang +57

Extragalactic Fast X-ray Transients (EFXTs) represent an emerging class of high-energy phenomena characterized by X-ray outbursts lasting from tens to hundreds of seconds. However,…