Nanoflares and heating of the solar corona |
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Authors: | U Narain K Pandey |
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Institution: | (1) Astrophysics Research Group, Meerut College, 250 001 Meerut, India |
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Abstract: | Coronal heating by nanoflares is presented by using observational, analytical, numerical simulation and statistical results.
Numerical simulations show the formation of numerous current sheets if the magnetic field is sheared and bipoles have unequal
pole strengths. This fact supports the generation of nanoflares and heating by them. The occurrence frequency of transients
such as flares, nano/microflares, on the Sun exhibits a power-law distribution with exponent α varying between 1.4 and 3.3.
For nanoflares heating α must be greater than 2. It is likely that the nanoflare heating can be reproduced by dissipating
Alfven waves. Only observations from future space missions such as Solar-B, to be launched in 2006, can shed further light
on whether Alfven waves or nanoflares, heat the solar corona. |
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Keywords: | Sun: stars magnetic reconnection: coronal heating nanoflares |
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