A concordance scenario for the observation of a neutrino from the Tidal Disruption Event AT2019dsg
作者： Cecilia Lunardini , Walter Winter
DOI: 10.1038/S41550-021-01305-3
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摘要: We introduce a phenomenological concordance scenario with relativistic jet for the Tidal Disruption Event (TDE) AT2019dsg, which has been proposed as source of astrophysical neutrino event IceCube-191001A. Noting that AT2019dsg is one brightest (and few) TDEs observed in X-rays, we connect production X-rays: an expanding cocoon causes progressive obscuration X-rays emitted by accretion disk, while at same time it provides sufficiently intense external target back-scattered photo-pion off protons. also describe late-term emission (about 150 days after peak), scaling radius black body radius. Our energetics and assumptions are compatible expectations from numerical simulations TDEs. predict 0.26 events right energy range IceCube.
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