Temperature Structure of the Solar Corona: Comparison of the NIXT and YOHKOH X-Ray Images

Details Temperature Structure of the Solar Corona: Comparison of the NIXT and YOHKOH X-Ray Images Temperature Structure of the Solar Corona: Comparison of the NIXT and YOHKOH X-Ray Images

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasj...47l..15y&link_type=abstract

Publications of the Astronomical Society of Japan, v.47, p.L15-L19.

Astronomy and Astrophysics

Astronomy

25

Sun: Corona, Sun: Magnetic Fields, Sun: X-Rays, Sun: Yohkoh

Scientific paper

Solar soft X-ray images taken simultaneously by the Yohkoh and the Normal Incidence X-ray Telescope (NIXT) reveal significantly different coronal structures. Coronal loops are more clearly seen in the Yohkoh images, and the isolated island-like structures seen in the NIXT image have been found to correspond to the footpoints of the Yohkoh loops. The difference is due to the difference in the temperature response of the telescopes: NIXT is sensitive to temperatures ranging from 0.9 to 3 MK, while Yohkoh is more sensitive to temperatures above 2.5 MK. The morphological differences reflect the multi-temperature (1--5 MK) nature of the solar coronal plasmas.

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