On determining the electron density distribution of the solar corona from K-coronameter data
Solar Physics, 1972The electron density distribution of the inner solar corona (r ⩽ 2 R ⊙) as a function of latitude, longitude, and radial distance is determined from K-coronameter polarization-brightness (pB) data. A Legendre polynomial is assumed for the electron density distribution, and the coefficients of the polynomial are determined by a least-mean-square ...
Martin D. Altschuler, R. Michael Perry
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Electro-optical polarimeters for ground-based and space-based observations of the solar K-corona
SPIE Proceedings, 2012Polarimeters based on electro-optically tunable liquid crystals (LC) represent a new technology in the field of observational astrophysics. LC-based polarimeters are good candidates for replacing mechanically rotating polarimeters in most ground-based and space-based applications.
G. Capobianco +9 more
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Distribution of the K-corona Over the Polar Regions of the Solar Disk : 1965-1983
1984The goal of this technical note is to present a set of synoptic observations from the Mauna Loa series of K-coronameters in polar projection format. The initial motivation for the production of these plots was the desire to present data that would be useful in the study of the evolution of high-latitude coronal streamers over the solar cycles 20 and 21.
Fisher, R, Seagraves, P
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LASCO Observations Of The K-Corona From Solar Minimum To Solar Maximum And Beyond
AIP Conference Proceedings, 2003The LASCO C2 and C3 coronagraphs on SOHO have been recording a regular series of images of the corona since May 1996. This sequence of data covers the period of solar minimum, the increase to solar maximum, and the beginning of the decline toward the next solar minimum.
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Search for Optimal Three-dimensional Mapping of the Solar Corona From K-coronameter Data
1981To obtain improved maps of the coronal electron density distribution we have devised an iterative technique in which an approximation of the unknown distribution is successively modified to reduce discrepancies with the original data. With this technique we can now map the corona to a much finer resolution than shown in our previous papers, without ...
Perry, R, Altschuler, Martin
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The White Light Solar Corona an Atlas of K-coronameter Synoptic Charts August 1980 - September 1981
1982The synoptic observing project of the High Altitude Observatory's Coronal Dynamics Program started on 5 August 1980. The data obtained during the first year of operation, roughly August 1980 through September 1981, are presented in the following text. This period of time covers 15 solar rotations (as calculated by the synodic period obtained from the ...
Fisher, R +4 more
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The White Light Solar Corona: An Atlas of 1988 K-coronameter Synoptic Charts Dec.1987 - Jan.1989
1990The material presented in this report is in a format designed to provide convenient access to investigators intending to make correlative studies or an intercomparison of standard synoptic data sets, specifically, specification of the time-dependent structure of the solar corona.
Sime, D +3 more
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Parker Solar Probe Enters the Magnetically Dominated Solar Corona
Physical Review Letters, 2021Davin Larson +2 more
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Plasma Heating Induced by Tadpole-Like Downflows in the Flaring Solar Corona
Innovation(China), 2021Hui Tian, Katharine Reeves
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