Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A search for radio supernovae and supernova remnants in the region of
  NGC1569's super star clusters   We have used MERLIN, at 1.4 and 5 GHz, to search for radio supernovae (RSNe)
and supernova remnants (SNRs) in the unobscured irregular dwarf galaxy NGC1569,
and in particular in the region of its super star clusters (SSCs) A and B.
Throughout NGC1569 we find some 5 RSNe and SNRs but the SSCs and their
immediate surroundings are largely devoid of non-thermal radio sources. Even
though many massive stars in the SSCs are expected to have exploded already,
when compared with M82 and its many SSCs the absence of RSNe and SNRs in and
near A and B may seem plausible on statistical arguments. The absence of RSNe
and SNRs in and near A and B may, however, also be due to a violent and
turbulent outflow of stellar winds and supernova ejected material, which does
not provide a quiescent environment for the development of SNRs within and near
the SSCs.

22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th