Pattle, K;
Gear, W;
Redman, M;
Smith, MWL;
Greaves, J;
(2021)
Submillimetre observations of the two-component magnetic field in M82.
Monthly Notices of the Royal Astronomical Society
, 505
(1)
pp. 684-688.
10.1093/mnras/stab1300.
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Abstract
We observed the starburst galaxy M82 in 850 µm polarized light with the POL-2 polarimeter on the James Clerk Maxwell Telescope (JCMT). We interpret our observed polarization geometry as tracing a two-component magnetic field: a poloidal component aligned with the galactic ‘superwind’, extending to a height ∼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 µm polarized light distribution at galactocentric radii ≳2 kpc. Comparison of our results with recent High-resolution Airborne Wideband Camera Plus (HAWC+) measurements of the field in the dust entrained by the M82 superwind suggests that the superwind breaks out from the central starburst at ∼350 pc above the plane of the galaxy.
| Type: | Article |
|---|---|
| Title: | Submillimetre observations of the two-component magnetic field in M82 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab1300 |
| Publisher version: | https://doi.org/10.1093/mnras/stab1300 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | galaxies: individual: M82, galaxies: magnetic fields, submillimetre: galaxies |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10137339 |
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