Abstract
For many years solar magnetic fields have been measured by a variety of techniques, all of which exploit the Zeeman splitting of lines in the solar spectrum. One of these techniques (Leighton, 1959) involves a photographic subtraction of two monochromatic images to produce a picture of the Sun in which the line-of-sight component of the solar magnetic field appears as various shades of gray. In a magnetogram made by this method, zero field strength appears as neutral gray, while magnetic fields of one polarity or the other appear as lighter or darker areas, respectively. Figure 1 shows such a magnetogram.
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References
Leighton, R. B.: 1957, Astrophys. J. 130, 366.
Roberts, P. H.: 1970, Ph.D. Thesis, California Institute of Technology (unpublished).
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© 1971 International Astronomical Union
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Smithson, R.C., Leighton, R.B. (1971). Analog Video Magnetograms in Real Time. In: Howard, R. (eds) Solar Magnetic Fields. International Astronomical Union / Union Astronomique Internationale, vol 43. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3117-2_10
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DOI: https://doi.org/10.1007/978-94-010-3117-2_10
Publisher Name: Springer, Dordrecht
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