Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino

Reusch, Simeon; Stein, Robert; Kowalski, Marek; van Velzen, Sjoert; Franckowiak, Anna; Lunardini, Cecilia; Murase, Kohta; Winter, Walter; Miller-Jones, James C.A.; Kasliwal, Mansi M.

doi:10.1103/PhysRevLett.128.221101

Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino

Simeon Reusch
(
- DESY, Zeuthen and
- Humboldt U., Berlin
)
,
Robert Stein
(
- DESY, Zeuthen and
- Humboldt U., Berlin and
- Caltech, Pasadena (main)
)
,
Marek Kowalski
(
- DESY, Zeuthen and
- Humboldt U., Berlin
)
,
Sjoert van Velzen
(
- Leiden Observ.
)
,
Anna Franckowiak
(
- DESY, Zeuthen and
- Ruhr U., Astron. Inst.
)

Nov 17, 2021

20 pages

Published in:

Phys.Rev.Lett. 128 (2022) 22, 221101

Published: Jun 3, 2022

e-Print:

2111.09390 [astro-ph.HE]

DOI:

10.1103/PhysRevLett.128.221101 (publication)

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Abstract: (APS)

The origins of the high-energy cosmic neutrino flux remain largely unknown. Recently, one high-energy neutrino was associated with a tidal disruption event (TDE). Here we present AT2019fdr, an exceptionally luminous TDE candidate, coincident with another high-energy neutrino. Our observations, including a bright dust echo and soft late-time x-ray emission, further support a TDE origin of this flare. The probability of finding two such bright events by chance is just 0.034%. We evaluate several models for neutrino production and show that AT2019fdr is capable of producing the observed high-energy neutrino, reinforcing the case for TDEs as neutrino sources.

Note:

20 pages, 6 figures, 6 tables

neutrino: flux
neutrino: particle source
neutrino: VHE
X-ray: emission
neutrino: production
exceptional

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