Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpspr..12...73e&link_type=abstract
In its USSR Rept.: Space (JPRS-USP-84-003) p 73 (SEE N84-28823 19-12) Transl. into ENGLISH from Pisma Astron. Zh. (USSR), v.
Astronomy and Astrophysics
Astronomy
Chromosphere, Position (Location), Solar X-Rays, X Ray Astronomy, Astronomical Photography, Data Correlation, Fine Structure, Ionization, Skylab Program, Solar Magnetic Field, Tables (Data)
Scientific paper
Some X ray pictures from the "Atlas of X ray Pictures of the Solar Corona'' (Zombeck et al, 1978) and from among those obtained aboard Skylab were compared with simultaneous filtered pictures of the K Ca+ and H alpha (0.5 Angstrom) lines. Pairs of pictures taken within the same time range of + or - 1.5 hours were selected. The positions of X ray bright spots were superimposed on transparencies of the contours of active fields and then enlarged to D(sun) = 200 mm and carefully correlated on the basis of as many details as possible. The location of X ray bright spots was determined relative to the chromospheric grid. Results are shown in tabular form. A total of 199 X ray bright spots was studied. The findings show that in the overwhelming majority of cases the X ray bright spots are located at the boundaries between grid cells, with ionization increasing with altitude through the solar atmosphere, indicating an association with fields of high vertical magnetic activity in the cell field. The fine structure of the X ray bright spots is discussed.
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