Viscous dissipation of magnetosonic waves in solar corona
Küçük Resim Yok
Tarih
2001
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Wave propagation and dissipation of magnetosonic waves are considered in an inhomogenous viscous coronal plasma permeated by a spatially varying magnetic field. In the linear magnetohydrodynamic approximation the dispersion relation yields two wave modes, fast and slow respectively. Depending on the physical parameters of the medium the damping length scales of the modes show varying behaviours. Damping length scales of the modes show sudden decrease at relevant heights. These drops may be due to phase mixing and resonance absorption. Wave flux density of the magnetosonic waves turns out to be of the order of 106 erg cm-2 s-1. This is high enough to replace the lost energy through optically thin emission and the thermal conduction down to the transition region.
Açıklama
Anahtar Kelimeler
Damping length scale, Dispersion relation, Magnetosonic waves, Solar corona
Kaynak
Turkish Journal of Physics
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
25
Sayı
3
