Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Early attempts at atmospheric simulations for the Cherenkov Telescope
  Array   The Cherenkov Telescope Array (CTA) will be the world's first observatory for
detecting gamma-rays from astrophysical phenomena and is now in its prototyping
phase with construction expected to begin in 2015/16. In this work we present
the results from early attempts at detailed simulation studies performed to
assess the need for atmospheric monitoring. This will include discussion of
some lidar analysis methods with a view to determining a range resolved
atmospheric transmission profile. We find that under increased aerosol density
levels, simulated gamma-ray astronomy data is systematically shifted leading to
softer spectra. With lidar data we show that it is possible to fit atmospheric
transmission models needed for generating lookup tables, which are used to
infer the energy of a gamma-ray event, thus making it possible to correct
affected data that would otherwise be considered unusable.

8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs