Magnetic fields in galaxies and beyond
Article Abstract:
The dynamo and primordial theories attempt to explain the origin and maintenance of galactic magnetic fields. The dynamo theory deals with the mean interstellar magnetic field B(u) under the action of both large-scale and small scale flows, while the primordial theory states that galactic disks already possess large-scale magnetic fields upon their formation. Both theories claim opposite magnetic parities of the vertical field relative to the galactic plane.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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The answer is blowing in the wind
Article Abstract:
A study report from High Energy stereoscopic System (HESS) suggests that the [gamma]-rays, of very high energy, that have been spotted, are coming from the powerful young stellar association Westerlund 2 located in the southern sky. The HESS findings suggest that cosmic rays are very energetic particles, with heavier nuclei and electrons that continually rain down on Earth's atmosphere from space.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
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