SOFIA Far-infrared Imaging Polarimetry of M82 and NGC 253: Exploring the 
Supergalactic Wind

Jones, Terry Jay; Dowell, C. Darren; Lopez Rodriguez, Enrique; Zweibel, Ellen G.; Berthoud, Marc; Chuss, David T.; Goldsmith, Paul F.; Hamilton, Ryan T.; Hanany, Shaul; Harper, Doyal A.; Lazarian, Alex; Looney, Leslie W.; Michail, Joseph M.; Morris, Mark R.; Novak, Giles; Santos, Fabio P.; Sheth, Kartik; Stacey, Gordon J.; Staguhn, Johannes; Stephens, Ian W.; Tassis, Konstantinos; Trinh, Christopher Q.; Volpert, C. G.; Werner, Michael; Wollack, Edward J.; Team, HAWC+ Science

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Journal Article

SOFIA Far-infrared Imaging Polarimetry of M82 and NGC 253: Exploring the Supergalactic Wind

MPS-Authors

Jones, Terry Jay
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dowell, C. Darren
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lopez Rodriguez, Enrique
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zweibel, Ellen G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Berthoud, Marc
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chuss, David T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Goldsmith, Paul F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hamilton, Ryan T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hanany, Shaul
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Harper, Doyal A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lazarian, Alex
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Looney, Leslie W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Michail, Joseph M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Morris, Mark R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Novak, Giles
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Santos, Fabio P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sheth, Kartik
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stacey, Gordon J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Staguhn, Johannes
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stephens, Ian W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Tassis, Konstantinos
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Trinh, Christopher Q.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Volpert, C. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Werner, Michael
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wollack, Edward J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Team, HAWC+ Science
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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https://ui.adsabs.harvard.edu/abs/2019ApJ...870L...9J
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Citation

Jones, T. J., Dowell, C. D., Lopez Rodriguez, E., Zweibel, E. G., Berthoud, M., Chuss, D. T., et al. (2019). SOFIA Far-infrared Imaging Polarimetry of M82 and NGC 253: Exploring the Supergalactic Wind. The Astrophysical Journal, 870.

Cite as: https://hdl.handle.net/21.11116/0000-0005-D0C8-E

Abstract

We present far-infrared polarimetry observations of M82 at 53 and 154 Œºm and NGC 253 at 89 Œºm, which were taken with High-resolution Airborne Wideband Camera-plus (HAWC+) in polarimetry mode on the Stratospheric Observatory for Infrared Astronomy. The polarization of M82 at 53 Œºm clearly shows a magnetic field geometry perpendicular to the disk in the hot dust emission. For M82 the polarization at 154 Œºm shows a combination of field geometry perpendicular to the disk in the nuclear region, but closer to parallel to the disk away from the nucleus. The fractional polarization at 53 Œºm (154 Œºm) ranges from 7% (3%) off nucleus to 0.5% (0.3%) near the nucleus. A simple interpretation of the observations of M82 invokes a massive polar outflow, dragging the field along, from a region ~700 pc in diameter that has entrained some of the gas and dust, creating a vertical field geometry seen mostly in the hotter (53 Œºm) dust emission. This outflow sits within a larger disk with a more typical planar geometry that more strongly contributes to the cooler (154 Œºm) dust emission. For NGC 253, the polarization at 89 Œºm is dominated by a planar geometry in the tilted disk, with weak indication of a vertical geometry above and below the plane from the nucleus. The polarization observations of NGC 253 at 53 Œºm were of a insufficient signal-to-noise ratio for a detailed analysis.