Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Magnetic Field of the Milky Way Galaxy   Cosmic magnetic fields are an integral component of the interstellar medium
(ISM), having influence on scales ranging from star formation to galactic
dynamics. While observations of external galaxies offer a `birds-eye-view' of
magnetic fields within galaxies, it is equally important to explore the
magnetic field of our own Milky Way Galaxy, which offers a more detailed,
albeit more complicated view. Over the past decade there has been a significant
increase in interest in the Galactic magnetic field, fueled largely by
innovations developed through the Canadian Galactic Plane Survey. In this
paper, I review the current state of understanding of the Galactic magnetic
field, and discuss briefly new and future observations that will provide
exciting new insights about the field.

29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga