Frequency-energy distributions of flares and active region transient brightenings

Details Frequency-energy distributions of flares and active region transient brightenings Frequency-energy distributions of flares and active region transient brightenings

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999soph..189..163w&link_type=abstract

Solar Physics, v. 189, Issue 1, p. 163-172 (1999).

Physics

7

Scientific paper

In 1988, 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.

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