Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical Tests of Leading Gamma Ray Burst Theories II   It has been observationally established that supernovae (SNe) of Type Ic
produce long duration gamma ray bursts (GRBs) and that neutron star mergers
generate short hard GRBs. SN-Less GRBs presumably originate in a phase
transition of a neutron star in a high mass X-ray binary. How these phenomena
actually generate GRBs is debated. The fireball and cannonball models of GRBs
and their afterglows have been widely confronted with the huge observational
data, with their defenders claiming success. The claims, however, may reflect
multiple choices and the use of many adjustable parameters, rather than the
validity of the models. Only a confrontation of key falsifiable predictions of
the models with solid observational data can test their validity. Such critical
tests are reviewed in this report.

1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol