Solar flares and avalanches in driven dissipative systems

Details Solar flares and avalanches in driven dissipative systems Solar flares and avalanches in driven dissipative systems

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412..841l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 412, no. 2, p. 841-852.

Astronomy and Astrophysics

Astrophysics

163

Energy Dissipation, Magnetic Field Reconnection, Plasma Radiation, Solar Flares, Solar Magnetic Field, Dynamic Models, Frequency Distribution, Hertzsprung-Russell Diagram

Scientific paper

The contention of Lu and Hamilton (1991) that the energy release process in solar flares can be understood as avalanches of many small reconnection events is further developed. The dynamics of the complex magnetized plasma of solar active regions is modeled with a simple driven dissipative system, consisting of a vector field with local instabilities that cause rapid diffusion of the field. It is argued that the avalanches in this model are analogous to solar flares. The distributions of avalanches in this model are compared with the solar flare frequency distributions obtained from ISEE 3/ICE satellite observations. Quantitative agreement is found with the energy, peak luminosity, and duration distributions over four orders of magnitude in flare energy, from the largest flares down to the completeness limit of the observations. It is predicted that the power-law solar flare frequency distributions will be found to continue downward with the same logarithmic slopes to an energy of about 3 x 10 exp 25 ergs and duration of about 0.3 s, with deviations from power-law behavior below these values.

Affiliated with

Also associated with

No associations

Rating

Solar flares and avalanches in driven dissipative systems 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 Solar flares and avalanches in driven dissipative systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar flares and avalanches in driven dissipative systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1491052