Other
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1009p&link_type=abstract
American Astronomical Society, SPD meeting #34, #10.09; Bulletin of the American Astronomical Society, Vol. 35, p.826
Other
Scientific paper
Recent EIT/TRACE observations of cool (≈ 1-1.5 MK) EUV coronal loops in active regions showed that these loops are very often characterized by greatly enhanced pressure scale-heights and densities compared to the predictions of static equilibrium theory. It has been suggested that mass flows may explain these over-dense and over-pressure loops. We investigate this conjecture by the means of 1D hydrodynamic simulations of steady-state mass flows in coronal loops. The mass flows in our calculations are driven by asymmetric heating that decreases exponentially along the loop from one footpoint all way to the other. By considering several representative cases for the magnitude and the length scale of the applied asymmetric heating, we determine how steady-state mass flows affect the thermodynamic structure of coronal loops and assess whether they can lead to enhanced pressure scale-heights and densities. Research supported in part by NASA and ONR.
Klimchuk James A.
Patsourakos Spiros
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