The non-ideal finite Larmor radius effect in the solar atmosphere

نویسندگان

چکیده

The dynamics of the partially ionized solar atmosphere is controlled by frequent collision and charge exchange between predominant neutral Hydrogen atoms charged ions. At signal frequencies below or order either magnetic stress {\it felt} both particles simultaneously. resulting neutral-mass loading ions leads to rescaling effective ion-cyclotron frequency-it becomes Hall frequency, resultant Larmor radius few kms. Thus finite (FLR) effect which manifests as ion pressure tensors operates over macroscopic scales. Whereas parallel perpendicular (with respect field) viscous momentum transport competes with Ohm diffusion field in photosphere-chromosphre, gyroviscous important only transition region chromosphere corona, where it ambipolar diffusion. wave propagation dominated medium depends on plasma $\beta$ (a ratio thermal energies). abundance free energy makes gyro waves unstable onset condition exactly opposite instability. However, maximum growth rate identical For a flow gradient $\sim 0.1 \,\mbox{s}^{-1}$ instability time one minute. Thus, may become subject this fast growing,

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ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2022

ISSN: ['0035-8711', '1365-8711', '1365-2966']

DOI: https://doi.org/10.1093/mnras/stac1028