Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Integral View of Fast Shocks around Supernova 1006   Supernova remnants are among the most spectacular examples of astrophysical
pistons in our cosmic neighborhood. The gas expelled by the supernova explosion
is launched with velocities ~ 1000 km/s into the ambient, tenuous interstellar
medium, producing shocks that excite hydrogen lines. We have used an optical
integral-field spectrograph to obtain high-resolution spatial-spectral maps
that allow us to study in detail the shocks in the northwestern rim of
supernova 1006. The two-component H\alpha\ line is detected at 133 sky
locations. Variations in the broad line widths and the broad-to-narrow line
intensity ratios across tens of atomic mean free paths suggest the presence of
suprathermal protons, the potential seed particles for generating high-energy
cosmic-rays.

21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys