Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A structure and energy dissipation efficiency of relativistic
  reconfinement shocks   We present a semi-analytical hydrodynamical model for the structure of
reconfinement shocks formed in astrophysical relativistic jets interacting with
external medium. We take into account exact conservation laws, both across the
shock front and in the zone of the shocked matter, and exact angular relations.
Our results confirm a good accuracy of the approximate formulae derived by
Komissarov & Falle (1997). However, including the transverse pressure gradient
in the shocked jet, we predict an absolute size of the shock to be about about
twice larger. We calculate the efficiency of the kinetic energy dissipation in
the shock and show a strong dependence on both the bulk Lorentz factor and
opening angle of the jet.

32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph