Large-scale magnetic field and density distribution in the solar minimum corona

Details Large-scale magnetic field and density distribution in the solar minimum corona Large-scale magnetic field and density distribution in the solar minimum corona

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10019865g&link_type=abstract

Journal of Geophysical Research, Volume 100, Issue A10, p. 19865-19880

Astronomy and Astrophysics

Astrophysics

19

Solar Physics, Astrophysics, And Astronomy: Corona, And Astronomy: Magnetic Fields, Interplanetary Physics: Sources Of The Solar Wind, And Astronomy: Photosphere

Scientific paper

We seek a quantitative description of the large-scale structure of magnetic field and density in the solar minimum corona that is consistent with observations of both white light intensity and the magnetic field at the photosphere. We use white light images from NASA's Solar Maximum Mission (SMM) Coronagraph/Polarimeter and the High-Altitude Observatory Mark III (MkIII) K-coronameter, along with photospheric field measurements from Stanford's Wilcox Solar Observatory (WSO), as constraints on the magnetostatic model of Bogdan and Low [1986] (B&L).
We find a family of solutions to the B&L model that reproduce observations of white light quite well, each with a different magnetic field structure. We show that the observed photospheric field cannot be used as an exact boundary condition on the B&L model, but we can limit the white light solutions by matching the total observed photospheric magnetic flux. We find a set of model parameters that reproduces white light and photospheric field to within quantifiable model and observational limits and calculate the physical plasma properties corresponding to these parameters. We conclude that this fit represents a self-consistent description of the solar minimum coronal magnetic field and density.

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