Temperature Structure of Solar Active Regions

Details Temperature Structure of Solar Active Regions Temperature Structure of Solar Active Regions

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...459..342y&link_type=abstract

Astrophysical Journal v.459, p.342

Astronomy and Astrophysics

Astronomy

79

Magnetohydrodynamics: Mhd, Sun: Activity, Sun: Corona, Sun: Fundamental Parameters, Sun: X-Rays, Gamma Rays

Scientific paper

We obtain high-quality temperature maps of solar active regions observed by the Yohkoh Soft X-ray Telescope. The temperatures of active region structures range from 3 MK to 10 MK. The bright X-ray loops do not necessarily have high temperatures, and faint structures sometimes have temperatures as high as 6 MK. The loop structures with shorter lifetimes (less than a few hours) generally have higher temperatures (5-8 MK) than the loops with longer lifetimes (3-4 MK). The plasma with temperature reaching 6-7 MK has cusp structures like solar flares (mini-cusp) or has multiple loop structures in the temperature maps in most cases. The 6-7 MK plasma is transiently heated either by magnetic reconnection at the neutral sheet above the cusp structures, or by magnetic reconnection of multiple loops. The 3-5 MK plasma is more steadily and uniformly heated. Two different mechanisms are apparently involved in the coronal heating.

Affiliated with

Also associated with

No associations

Rating

Temperature Structure of Solar Active Regions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Temperature Structure of Solar Active Regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature Structure of Solar Active Regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1644244