Let us say that there is a famous painting being displayed at an auction. There is a crowd of people just staring at it, and a particular person who has the ability to use Sound Burst as a Spell-Like Ability and used it to blow up the work of art.
Without someone having Arcane Sight/Detect Magic up before the ability has been cast, can anyone find out who had done the deed? Since it is a SLA, it does not have a Somatic, Verbal, and Material component, it would not impede the action, unless it is a concentration check, correct?