Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: GRBS: Standard Model & Beyond   There have been great and rapid progresses in the field of $\gamma$-ray
bursts since BeppoSAX and other telescopes discovered their afterglows in 1997.
In this talk, the main observational facts of $\gamma$-ray bursts and their
afterglows, and the standard fireball shock model are reviewed briefly. And
then, various post-standard effects, deviations from the standard model, are
presented.

28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex