Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..269j&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 1, Jan. 1992, p. 269-276. Research supported by Polish Academy of Sci
Astronomy and Astrophysics
Astronomy
80
Coronal Loops, Hydrodynamics, Solar Flares, Solar Temperature, X Ray Astronomy, Density Distribution, Stellar Models, Thermodynamic Properties
Scientific paper
The evolution of basic thermodynamic parameters of a single flaring solar loop has been investigated in terms of density-temperature (N-T) diagram. A grid of hydrodynamic models has been calculated for this purpose, using the Palermo-Harvard code. The calculated models differ in their initial conditions and the form of the energy imput (i.e., the heating rate value, the heating duration, the assumed time profile). The consequences of variation of these model parameters on the evolutionary paths in the density-temperature diagrams is considered; over a substantial duration, the decay occurs along a T varies as N-squared trajectory when the impulsive flare heating function is switched-off abruptly. The results obtained can be very useful as diagnostics of the flare heating process, based on soft X-ray observations.
Jakimiec Jerzy
Peres Giovanni
Reale Fabio
Serio Salvatore
Sylwester Barbara
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