Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theoretical Models of Gamma-Ray Bursts   Models of gamma ray bursts are reviewed in the light of recent observations
of afterglows which point towards a cosmological origin. The physics of
fireball shock models is discussed, with attention to the type of light
histories and spectra during the gamma-ray phase. The evolution of the remnants
and their afterglows is considered, as well as their implications for our
current understanding of the mechanisms giving rise to the bursts.

16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con