Two-dimensional multi-parameter fields of a limb flare loop system

Details Two-dimensional multi-parameter fields of a limb flare loop system Two-dimensional multi-parameter fields of a limb flare loop system

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...380..704g&link_type=abstract

Astronomy and Astrophysics, v.380, p.704-713 (2001)

Astronomy and Astrophysics

Astrophysics

6

Sun: Flares, Sun: Fundamental Parameters

Scientific paper

The 2D Hbeta spectral data of the post-flare loop system (PFLs) of August 17, 1989 are obtained and analyzed quantitatively. Four physical parameters (the line-of-sight velocity V//, column number density of the hydrogen atoms at the second level along the line-of-sight direction N2, the excitation temperature Tex and the micro-turblence velocity Vt) and their 2D distributions are derived. The 2D fields of V//, N2, Tex and Vt exhibit inhomogeneous and asymmetric properties in two loop legs. Red-shift velocities in the south leg are smaller than those of blue shift in the north leg where the velocity reaches 60 km s-1. The values of N2 and Tex in the south leg are all much higher than those in the north leg, N2 ranges between 0.5 to 4.5x 1013 cm-2, while Tex ranges from 0.8 to 2.2 x 104 K, lower at the top part than in the two legs. A high temperature region is located in the middle of the south leg. Vt at the top part is greater than that in the two legs, with the average being 30 ~ 40 km s-1. Electron density ne and electron pressure Pe are estimated at 0.2 ~ 0.6x 1011 cm-3 and at 0.04 ~ 0.12 dyn cm-2, respectively. These results are compared with those obtained from the PFLs of 1984 February 18.

Affiliated with

Also associated with

No associations

Rating

Two-dimensional multi-parameter fields of a limb flare loop system 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 Two-dimensional multi-parameter fields of a limb flare loop system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-dimensional multi-parameter fields of a limb flare loop system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1227919