Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Arrays is Space to detect Upward Tau and Highest Altitude Showers   Ultra High Energy, UHE, upward Tau neutrinos Tau, anti-neutrino Tau, above
hundred TeVs and up to tens PeV energies, of relevant astrophysical nature, may
lead to UHE Taus and consequent Up-ward Tau air-Showers {UPTAUS} after
interaction on Earth crust surface. The UPTAUS discover may open a new UHE Tau
Neutrino Astrophysics. A new generation of Gamma, X, optical and Radio Arrays
in Space may discover, in the same Auger spirit, such up-coming Air-showers as
well as an additional Tau signal: the nearly Horizontal Tau AIR-Shower
{HORTAUS} originated by UHE neutrinos tau at 10^{19} eV energies arising from a
thin Earth crust corona at few tens of degree below the horizons; a degree
above the horizons, there should be over common diffused cosmic ray albedo, an
additional High Altitudes (nearly Horizontal) Showers {HIAS}, by more common
Cosmic Rays primaries at PeVs up to EeV and ZeV energies, both of hadronic or
of electro-magnetic $\gamma$ nature. Mini-arrays detectors in high Altitude
Balloons tails facing the horizons and the Earth below may also reveal both
UPTAUS, and HIAS, and more rarely HORTAUS. Gamma Burst, Cherenkov flashes and
rarer muons observed by high mountains peak arrays or high quota balloon array
may better probe UPTAUS and HORTAUS. Present and future X-Gamma satellites as
Beppo-Sax may be also able to discover HORTAUS and HIAS discovering transient
events by UHE source (as the Crab) while in occultation by Earth. Because of
the large shower distances and the Earth magnetic field, HIAS and HORTAUS
showers will be split in a {Twin-Beams} fan-shaped wide arc, orthogonal to the
terrestrial magnetic field, with a strong azimuths modulation. Gamma bursts
with rare single muons or neutrons at the horizon, associated with HIAS,
HORTAUS may be discovered by Glast and AMS satellite.

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The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
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The categories of this paper are: econ
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th