Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for point sources and diffuse emission from the Galactic plane
  with the HEGRA-IACT-system   The HEGRA-IACT-system with a FoV of ~1.5 deg radius has been used for
surveying one quater of the Galactic disc in respect to point sources,
moderately extended sources and for diffuse emission in the energy range above
1 TeV. In total 140 h of good observation time were accumulated.
  No new source has been discoverd. Limits on the level of 20% or lower of the
Crab flux on about 87 potential sources like SNR, Pulsars and EGRET sources are
derived. A limit on the diffuse emission is given on the level of dPhi/dE(E=1
TeV) = 6.1 10^-15 ph cm-2 s-1 sr-1 Mev-1 resulting in a lower limit of 2.5 on
the spectral index for the extrapolation of the meassured EGRET flux for the
diffuse emission.

12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex