A representation-learning search of the Chandra archive found XRT 200515, a fast X-ray transient with a hard <10 s spike and a soft ~800 s tail, plus 3559 total flare and dip candidates.
(C3) We choose the hyperparameter combination that produces the highest value of ρDBSCAN
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Representation Learning for Time-Domain High-Energy Astrophysics: Discovery of Extragalactic Fast X-ray Transient XRT 200515
A representation-learning search of the Chandra archive found XRT 200515, a fast X-ray transient with a hard <10 s spike and a soft ~800 s tail, plus 3559 total flare and dip candidates.