Journal Article

PUBDB-2021-03170

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Publisher Correction: A concordance scenario for the observed neutrino from a tidal disruption event

Winter, W. (Corresponding author)DESY* ; Lunardini, C.Extern*

2021
Nature Publishing Group London

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Please use a persistent id in citations: doi:10.1038/s41550-021-01343-x

Report No.: DESY-20-088; arXiv:2005.06097

Abstract: During a tidal disruption event, a star is torn apart by the tidal forces of a supermassive black hole, with about 50% of the star’s mass eventually accreted by the black hole. The resulting flare can, in extreme cases of super-Eddington mass accretion, result in a relativistic jet1,2,3,4. While tidal disruption events have been theoretically proposed as sources of high-energy cosmic rays5,6 and neutrinos7,8,9,10,11,12,13,14, stacking searches indicate that their contribution to the diffuse extragalactic neutrino flux is very low15. However, a recent association of a track-like astrophysical neutrino (IceCube-191001A16) with a tidal disruption event (AT2019dsg17) indicates that some tidal disruption events can accelerate cosmic rays to petaelectronvolt energies. Here we introduce a phenomenological concordance scenario with a relativistic jet to explain this association: an expanding cocoon progressively obscures the X-rays emitted by the accretion disk, while at the same time providing a sufficiently intense external target of backscattered X-rays for the production of neutrinos via proton–photon interactions. We also reproduce the delay (relative to the peak) of the neutrino emission 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 tidal disruption events.

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Contributing Institute(s):

1. Theoretische Astroteilchenphysik (Z_THAT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)
2. NEUCOS - Neutrinos and the origin of the cosmic rays (646623) (646623)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Winter, W. (Corresponding author)DESY* ; Lunardini, C.Extern*
A concordance scenario for the observed neutrino from a tidal disruption event
Nature astronomy 5, 472 - 477 (2021) [10.1038/s41550-021-01305-3]2021     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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