A concordance scenario for the observation of a neutrino from the Tidal Disruption Event AT2019dsg. (arXiv:2005.06097v2 [astro-ph.HE] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Winter_W/0/1/0/all/0/1">Walter Winter</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lunardini_C/0/1/0/all/0/1">Cecilia Lunardini</a>

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

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

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