galactic magnetic field

A very weak and complex system of magnetic fields, known to exist in the interstellar regions of the Galaxy from observations of the Faraday rotation of radiation from pulsars and other radio sources, of the Zeeman splitting of the 21-cm hydrogen line arising in interstellar clouds, and of interstellar polarization. The magnetic flux density lies in the range 10^–10 to 10^–9 tesla, with 3–6 × 10^–10 tesla being the best estimate. The direction of the field seems to be in the plane of the Galaxy, along the spiral arms. See also cosmic rays.

单词	galactic magnetic field
释义	galactic magnetic field galactic magnetic field A very weak and complex system of magnetic fields, known to exist in the interstellar regions of the Galaxy from observations of the Faraday rotation of radiation from pulsars and other radio sources, of the Zeeman splitting of the 21-cm hydrogen line arising in interstellar clouds, and of interstellar polarization. The magnetic flux density lies in the range 10^–10 to 10^–9 tesla, with 3–6 × 10^–10 tesla being the best estimate. The direction of the field seems to be in the plane of the Galaxy, along the spiral arms. See also cosmic rays.
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