Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New VLA observations of the SNR Puppis A: the radio properties and the
  correlatoin withe the X-ray emission   In this paper we report on a new study of the SNR Puppis A based on VLA
observations at 1425 MHz; the improvement represents a factor of two in angular
resolution and almost ten times in sensitivity compared to the best previous
image of Puppis A. This new image is used to compare with re-processed 327 MHz
data and ROSAT and Chandra images to investigate morphological and spectral
characteristics.

22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int