Comparison between H-alpha and YOHKOH soft X-ray images of emerging flux regions

Details Comparison between H-alpha and YOHKOH soft X-ray images of emerging flux regions Comparison between H-alpha and YOHKOH soft X-ray images of emerging flux regions

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44l.193k&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 5, p. L193-L198.

Astronomy and Astrophysics

Astronomy

10

H Alpha Line, Solar Corona, Solar Flux, Spaceborne Astronomy, X Ray Telescopes, Chromosphere, Japanese Spacecraft, Solar X-Rays

Scientific paper

Results are presented of a detailed comparison between H-alpha and Yohkoh soft X-ray (SXR) images of three emerging flux regions. It is shown that in general the soft X-ray bright features coincide well in space with H-alpha arch filament systems (AFSs) in the emerging flux regions (EFRs). Some young and active parts of EFRs are especially bright in SXR. The SXR structures related to EFRs showed fairly rapid changes in both brightness and shape. The observation that SXR was bright above H-alpha AFSs is consistent with the concept that H-alpha loops of AFSs evolve into coronal loops. The other results suggest that H-alpha loops of AFSs are strongly heated by a fast reconnection in some young and rapidly growing EFRs.

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