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Frequency-energy distributions of flares and active region transient brightenings View all abstracts by submitter

Mike Wheatland   Submitted: 1999-11-17 04:04

Some time ago Uchida and Shibata proposed a model for compact loop flares as due to the collision of two large amplitude torsional Alfvén wave packets coming up along a coronal magnetic loop, leaking out from the subphotospheric convective layers of the solar atmosphere. We investigate the possibility that active region transient brightenings occur when a single torsional Alfvén wave packet transits a coronal loop. Assuming this related origin for flares and transient brightenings, the statistics of the two phenomena must also be closely related. It is shown that the observed power-law frequency-energy distributions of flares and transient brightenings may be accounted for in a natural way if the energy distribution of the underlying torsional Alfvén wave packets is itself a power law.

Authors: Wheatland, M.S. and Uchida, Y.
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Publication Status: Solar Physics (in press)
Last Modified: 1999-11-17 04:04
Go to main E-Print page  Plasma Turbulence and Stochastic Acceleration in Solar Flares
  Are electric currents in solar active regions neutralized?
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