Flux emergence and umbra formation after the X-9 flare of 1991 March 22

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

30

Magnetic Field Configurations, Magnetic Field Reconnection, Solar Flares, Solar Magnetic Field, Umbras, Magnetic Flux, Magnetic Signatures

Scientific paper

Vector magnetograms, H-alpha, D3, and white-light filtergrams were obtained at the Big Bear Solar Observatory immediately after the X-9 flare on March 22, 1991. These observations show that the umbral area increased by 2 x 10 exp 7 sq km, together with a magnetic flux increase of 2 x 10 exp 20 Mx. The magnetic shear increased by 40 deg along the neutral line. It is indicated, by the study of the evolution of spot and magnetic structure of the March 22, 1991 region, that a pair of new umbrae emerged suddenly on either side of the neutral line coinciding with the shear increase immediately after the flare.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Flux emergence and umbra formation after the X-9 flare of 1991 March 22 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 Flux emergence and umbra formation after the X-9 flare of 1991 March 22, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flux emergence and umbra formation after the X-9 flare of 1991 March 22 will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1369932

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.