Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Theory of Relativistic Jet Formation in Galactic Sources: Towards a
  Unified MOdel   I review recent progress in the theory of relativistic jet production. The
presently favored mechanism is an electrodynamic one, in which charged plasma
is accelerated by electric fields that are generated by a rotating magnetic
field. The most pressing issues of current interest are understanding what
factors control the jet power, its speed, and its degree of collimation, and
how these properties determine the type of jet observed and its effect on its
environment. Recent observations of microquasars, pulsars, gamma-ray bursts
(GRBs) and core-collapse supernovae indicate that jets play an important, and
in some cases possibly dominant, role in each of these. The presence of a jet
in all cases may provide an important clue to how these sources may be related.
Based on these observations, and on recent theoretical investigations, I
propose an evolutionary scheme that attempts to unify all of these relativistic
galactic jet sources. I also discuss several important issues that must be
resolved before this (or another scheme) can be adopted.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
18
The categories of this paper are: econ
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys