Plasma flow around coronal loops

✍ Scribed by Satoshi Hinata

• Publisher: Springer
• Year: 1982
• Tongue: English
• Weight: 562 KB
• Volume: 80
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00153431

✦ Synopsis

Current dissipation models of coronal loop heating are studied. Turbulent current dissipation is shown to lead to a time dependent process because of an enormous mass motion induced in the current layer. A stationary heating process involves only ohmic heating, which requires a large current layer. To insure MHD stability, the loop must be composed of many elements with the oppositely directed currents. A stationary current dissipation process induces the plasma motion across the magnetic field into the loop and down the loop with the speeds v• ~ 104 cm s -1 and vii ~ 2 • 104 cm s -l, respectively. The pressure of the loop is also estimated to be proportional to the current density: p/J = 6.3 • 10 -8 dyn/statamp.