H alpha off-band pre-flare activities

Details H alpha off-band pre-flare activities H alpha off-band pre-flare activities

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....59..255m&link_type=abstract

Astronomy and Astrophysics, vol. 59, no. 2, July 1977, p. 255-259. Research supported by the Observatoire de Paris.

Astronomy and Astrophysics

Astrophysics

6

H Alpha Line, Solar Flares, Solar Spectra, Chromosphere, Filtergrams, Solar Activity

Scientific paper

On the basis of analysis of on- and off-bands H alpha filtergrams it is shown that (1) at least 82% of flares are preceded by spatially correlated H alpha off-band pre-flare activities, (2) these activities can be divided into two groups: one starts less than a few min and the other starts more than 30 min before the flare, (3) in the case of material ejection, the ejection always starts in the off-band prior to the H alpha on-band ejection and prior to the flare with the above mentioned time scales, and (4) the difference in time scale can be attributed to the difference in the local magnetic field conditions as shorter pre-flare activities are always associated with the vortex structure.

Affiliated with

Also associated with

No associations

Rating

H alpha off-band pre-flare activities 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 H alpha off-band pre-flare activities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and H alpha off-band pre-flare activities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1559325