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Solar magnetogram

Summary

In solar observation, a magnetogram is a pictorial representation of the spatial variations in strength of the solar magnetic field.

A magnetogram produced by the Helioseismic and Magnetic Imager aboard the Solar Dynamics Observatory

Solar magnetograms are produced by solar magnetographs. Some magnetographs only measure the absolute value of the magnetic field strength while others are capable of measuring the 3-dimensional magnetic field. The latter are referred to as vector magnetographs. These measurements are made by exploiting the Zeeman effect or, less frequently, the Hanle effect.[1]

The first magnetograph was constructed by George Ellery Hale in 1908.[2][3]

References edit

  1. ^ "Magnetogram Chromosphere Observed from Mt. Wilson Solar Observatory". www.ncei.noaa.gov. National Centers for Environmental Information. Retrieved 4 May 2023.
  2. ^ Odenwald, Sten (8 June 2012). "Solar Magnetism: Magnetograms". Digital Universe Foundation. Archived from the original on 8 June 2012.
  3. ^ Deborah, Scherrer. "Solar Magnetograms". solar-center.stanford.edu. Stanford Solar Center. Retrieved 5 December 2022.