On solar coronal heating

Details On solar coronal heating On solar coronal heating

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001basi...29..231p&link_type=abstract

Bulletin of the Astronomical Society of India, Vol. 29, p. 231-238

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We review heating of solar corona by magnetic fields/currents. Our emphasis is on micro- and nano-flares. In case of a microflare the energy release is ~1026 ergs whereas in a nanoflare ~1023 - 1025 ergs of energy is released. Flares have a distribution law over total radiated energy with exponent ? = 1.8. Extending the same power law to micro-and nano-flares and assuming that they constitute a dominant heating mechanism for solar corona ??must be greater than 2. Many investigations lead to ??< 2 whereas a few yield ??> 2. The verdict remains inconclusive. More observational analyses and numerical simulations are needed to discriminate between the two cases.

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