A magnetic torsional wave near the Galactic Centre traced by a ‘double helix’ nebula

Mark Morris (), Keven Uchida and Tuan Do
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Mark Morris: University of California
Keven Uchida: Cornell University
Tuan Do: University of California

Nature, 2006, vol. 440, issue 7082, 308-310

Abstract: Looks Familiar... Infrared images obtained by the Spitzer Space Telescope reveal a motif near the centre of our Galaxy that's more familiar to biologists than to astronomers: a double helix. The double helix nebula is perpendicular to the Galactic plane and about 100 parsecs from the Galactic Centre. An initial interpretation of the structure is that it represents a torsional Alfvn wave propagating away from the Galactic disk, driven by a rotating cloud of magnetized gas.

Date: 2006
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DOI: 10.1038/nature04554

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