Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The circumstellar environment of rotating Wolf-Rayet Stars and the
  implications for GRB afterglows   If Wolf-Rayet stars are the progenitors of Gamma-ray bursts (GRBs), they must
rotate rapidly to produce the GRB. This rotation may effect their stellar-wind
bubbles and possibly explain why so many GRB afterglows occur in a constant
density medium.

36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex