Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of horizontal air showers with the Auger Engineering Radio
  Array   The Auger Engineering Radio Array (AERA), at the Pierre Auger Observatory in
Argentina, measures the radio emission of extensive air showers in the 30-80
MHz frequency range. AERA consists of more than 150 antenna stations
distributed over 17 km$^2$. Together with the Auger surface detector, the
fluorescence detector and the under-ground muon detector (AMIGA), AERA is able
to measure cosmic rays with energies above 10$^{17}$ eV in a hybrid detection
mode. AERA is optimized for the detection of air showers up to 60$^{\circ}$
zenith angle, however, using the reconstruction of horizontal air showers with
the Auger surface array, very inclined showers can also be measured. In this
contribution an analysis of the AERA data in the zenith angle range from
62$^{\circ}$ to 80$^{\circ}$ will be presented. CoREAS simulations predict
radio emission footprints of several km$^2$ for horizontal air showers, which
are now confirmed by AERA measurements. This can lead to radio-based
composition measurements and energy determination of horizontal showers in the
future and the radio detection of neutrino induced showers is possible.

27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math