Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Submillimetre observations of the two-component magnetic field in M82   We observed the starburst galaxy M82 in 850$\mu$m polarised light with the
POL-2 polarimeter on the James Clerk Maxwell Telescope (JCMT). We interpret our
observed polarisation geometry as tracing a two-component magnetic field: a
poloidal component aligned with the galactic 'superwind', extending to a height
$\sim 350$ pc above and below the central bar; and a spiral-arm-aligned, or
possibly toroidal, component in the plane of the galaxy, which dominates the
850$\mu$m polarised light distribution at galactocentric radii $\gtrsim 2$ kpc.
Comparison of our results with recent HAWC+ measurements of the field in the
dust entrained by the M82 superwind suggests that the superwind breaks out from
the central starburst at $\sim 350$ pc above the plane of the galaxy.

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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn