Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.446..179b&link_type=abstract
8th SOHO Workshop: Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona. Proceedings of the Conference hel
Astronomy and Astrophysics
Astrophysics
4
Scientific paper
We model the dynamics of the plasma in the corona and transition region between the chromosphere and the corona using the Palermo-Harvard 1-D hydrodynamic code and the ASAP spectral synthesis code. Assuming that the coronal heating of the loop is entirely due to microflares, a random energy function with a gaussian spatial distribution is applied at the top of the coronal loop. We investigate the hydrodynamic plasma response to such a stocastic heating for a set of loop models; we explore the solution parameter space, varying the loop length, its initial coronal pressure, the typical repetition time of the energy event distribution, while maintaining the same energy rate averaged in time. With the ASAP code we synthesize the emission in some optically thin lines formed in the transition region for all the loop models of the set considered, in order to allow a direct comparison of the model results with line intensities and velocities observed by SUMER.
Betta Rita
Peres Giovanni
Reale Fabio
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