Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-messenger interpretation of the neutrinos from TXS 0506+056   We discuss possible interpretations of the neutrinos observed from the AGN
blazar TXS 0506+056 in the multi-messenger and multi-wavelength context,
including both the 2014-15 and 2017 neutrino flares. While the neutrino
observed in September 2017 has to describe contemporary data in e.g. the X-ray
and VHE gamma-ray ranges, data at the 2014-15 excess are much sparser. We
demonstrate that in both cases the simplest possible one-zone AGN blazar models
face challenges. While the 2017 flare can be well interpreted by considering
more sophisticated source geometries, the 2014-15 flare is much harder to
describe with conventional models. One challenge is the energy injected into
the electromagnetic cascade coming together with the neutrino production, which
cannot be reconciled with the 13 observed neutrino events. We also speculate if
a common interpretation of both flares is feasible.

30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph