Quiet Sun coronal heating: statistical model

摘要: Recent observations of Krucker & Benz (1998) give strong support to Parker's hypothesis (Parker 1988) that small scale dissipative events make the main contribution quiet Sun coronal heating. They also showed these are associated not only with magnetic network, but cell interiors (Benz Krucker, 1998). Taking into account in addition results analysis performed by Priest co-authors (Priest et al. 2000) who demonstrated heating is quasi-homogeneous along arcs we come conclusion sources driving sources. Typically they order or smaller than linear observed, 2000 km. To describe statistical properties corona microflares, nanoflares, and even events, consider a cellular automata model subject uniform dissipation. The consists two elements, field source supposed be hydrodynamic turbulence convected from photosphere local dissipation currents. assumed provided either anomalous resistivity, when current density exceeds certain threshold value, reconnection. problem considered how characteristics dissipated energy flow depend upon on physical mechanism responsible for As value increased, observe transition Gaussian statistics power-law type. In addition, find reconnection stronger deviations distribution.