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The photospheric vector magnetic field of a sunspot and its vertical gradientThe results of direct comparisons of photospheric and transition region line-of-sight field observations of sunspots using the SMM UV spectrometer and polarimeter are reported. The analysis accompanying the data is concentrated on demonstrating that the sunspot concentrated magnetic field extends into the transition region. An observation of a sunspot on Oct. 23, 1980 at the S 18 E 03 location is used as an example. Maximum field strengths ranged from 2030-2240 gauss for large and small umbrae viewed and inclination of the field to the line-of-sight was determined for the photosphere and transition region. The distribution of the magnetic field over the sunspot and variation of the line-of-sight gradient are discussed, as are the magnitudes and gradients of the photospheric field across the penumbral-photospheric boundaries.
Document ID
19830036899
Document Type
Conference Proceedings
Authors
Hagyard, M. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
West, E. A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Tandberg-Hanssen, E. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Smith, J. E. (NASA Marshall Space Flight Center Space Sciences Laboratory, Huntsville, AL, United States)
Henze, W., Jr. (Teledyne Brown Engineering Huntsville, AL, United States)
Beckers, J. M. (Arizona, University Tucson, AZ, United States)
Bruner, E. C. (Lockheed Research Laboratories Palo Alto, CA, United States)
Hyder, C. L. (Alabama, University Huntsville, AL, United States)
Gurman, J. B. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Shine, R. A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
SOLAR PHYSICS
Meeting Information
The physics of sunspots; Conference(Sunspot, NM)
Distribution Limits
Public
Copyright
Other