Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...44...83p&link_type=abstract
Solar Physics, vol. 44, Sept. 1975, p. 83-99. Research supported by the Consiglio Nazionale delle Ricerche;
Astronomy and Astrophysics
Astronomy
56
Photosphere, Solar Activity Effects, Solar Corona, Solar Magnetic Field, Emission Spectra, Magnetic Signatures, Solar X-Rays, Topology, X Ray Astronomy
Scientific paper
The appearances of several X-ray active regions observed on March 7, 1970 and June 15, 1973 are compared with the corresponding coronal magnetic-field topology. Coronal fields have been computed from measurements of the longitudinal component of the underlying magnetic fields, based on the current-free hypothesis. An overall correspondence between X-ray structures and calculated field lines is established, and the magnetic counterparts of different X-ray features are also examined. A correspondence between enhanced X-ray emission and the location of compact closed field lines is suggested. Representative magnetic-field values calculated under the assumption of current-free fields are given for heights up to 200 sec.
Krieger Allen S.
Poletto Giannina
Timothy A. F.
Vaiana Giuseppe S.
Zombeck Martin V.
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