scholarly journals A Dynamic Scaling Law for Solar and Stellar Flare Loops

1989 ◽  
Vol 104 (2) ◽  
pp. 353-355
Author(s):  
George H. Fisher ◽  
Suzanne L. Hawley
Keyword(s):  
Differential Equation ◽  
Ordinary Differential Equation ◽  
Heating Rate ◽  
Coronal Loop ◽  
Scaling Law ◽  
Dynamic Scaling ◽  
Time Varying ◽  
Stellar Flare ◽  
Flare Loops

AbstractWe discuss an ordinary differential equation which describes how the pressure in a coronal loop may evolve in time under the influence of a uniform, but time varying heating rate.

scholarly journals Stellar flare diagnostics from multi–wavelength observations

2009 ◽  
Vol 5 (S264) ◽  
pp. 288-291 ◽  
Author(s):  
Alexander V. Stepanov ◽  
Yuri T. Tsap ◽  
Yulia G. Kopylova
Keyword(s):  
Scaling Law ◽  
Electric Circuit ◽  
Plasma Parameters ◽  
Stellar Flare ◽  
Flare Loop ◽  
X Ray ◽  
Stellar Flares ◽  
Flare Loops ◽  
Red Dwarfs ◽  
Multi Wavelength

AbstractQuasi–periodic pulsations in various wavebands are natural manifestations of emission of stellar flares. We suggest a diagnostic tool of stellar flares based on the coronal seismology and the solar–stellar analogy. Two approaches are used: (I) flare loop as a resonator for MHD oscillations and (II) flare loop as an equivalent electric circuit. Using optical, X–ray, and radio data we obtained flare plasma parameters for the red dwarfs EQ Peg, AT Mic, and AD Leo. The characteristic length of stellar flare loops l ~ R* and their electric currents turned out to be one–two orders of magnitude lager than the solar ones. Advantages of proposed diagnostics in comparison to the scaling law methods are given.

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