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ESO 253-G003/ASASSN-14KO IS A HIGHLY UNIQUE AGN THAT UNDERGOES PERIODIC FLARES EVERY ~114 DAYS WITH A NEGATIVE NON-ZERO PERIOD DERIVATIVE. THERE WERE 17 OUTBURSTS DETECTED IN V-/G-BAND ASAS-SN SURVEY DATA DURING THE LAST SIX YEARS WITH MISSING OUTBURSTS DUE ONLY TO SEASONAL GAPS. NUMEROUS FLARING EVENTS ARE HIGHLY UNUSUAL FOR AN AGN WHICH NORMALLY VARY AT A LOW-LEVEL FOLLOWING A DAMPED RANDOM WALK MODEL. THE PRECISE ORIGIN OF THESE FLARES REMAINS UNKNOWN BUT THIS COULD BE THE FIRST EXAMPLE OF A REPEATING PARTIAL TIDAL DISRUPTION EVENT (TDE). THIS PROPOSAL WILL TO OBTAIN NICER OBSERVATIONS OF THREE UPCOMING OUTBURSTS WHICH WILL BE COMPLEMENTED BY UV/ OPTICAL MONITORING IN ORDER TO FULLY CHARACTERIZE THE X-RAY EVOLUTION DURING THE FLARES AND COMPARE THE EMISSION BETWEEN FLARES OVER TIME.

$37,500FY2021National Aeronautics and Space AdministrationNASA

University Of Hawaii, Honolulu

Investigators

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