Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solving the missing GRB neutrino and GRB-SN puzzles   Every GRB model where the progenitor is assumed to be a highly relativistic
hadronic jet whose pions, muons and electron pair secondaries are feeding the
gamma jets engine, necessarily (except for very fine-tuned cases) leads to a
high average neutrino over photon radiant exposure (radiance), a ratio well
above unity, though the present observed average IceCube neutrino radiance is
at most comparable to the gamma in the GRB one. Therefore no hadronic GRB,
fireball or hadronic thin precessing jet, escaping exploding star in tunneled
or penetrarting beam, can fit the actual observations. A new model is shown
here, based on a purely electronic progenitor jet, fed by neutrons (and relics)
stripped from a neutron star (NS) by tidal forces of a black hole or NS
companion, showering into a gamma jet. Such thin precessing spinning jets
explain unsolved puzzles such as the existence of the X-ray precursor in many
GRBs. The present pure electron jet model, disentangling gamma and (absent)
neutrinos, explains naturally why there is no gamma GRB correlates with any
simultaneous TeV IceCube astrophysical neutrinos. Rare unstable NS companion
stages while feeding the jet may lead to an explosion simulating a SN event.
Recent IceCube-160731A highest energy muon neutrino event with absent X-gamma
traces confirms the present model expectations.

11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics