Oscillations of coronal loops using Rayleigh–Ritz technique
نویسندگان
چکیده
منابع مشابه
Sausage oscillations of coronal loops
Aims. Analytical theory predicts the existence of trapped global (or fundamental) sausage fast magnetoacoustic modes in thick and dense coronal loops only, with the periods estimated as the ratio of double the loop length and the Alfvén speed outside the loop. We extend this study to the leaking regime, considering global sausage modes of long loops with small density contrasts. Methods. Anti-s...
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A recent study by Nakariakov et al. pointed out that the dispersion relation of MHD sausage mode oscillations has been incorrectly applied to coronal loops, neglecting the highly dispersive nature of the phase speed and the long-wavelength cutoff of the wave number. In the light of these new insights we revisit previous observations that have been interpreted in terms of MHD sausage mode oscill...
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ژورنال
عنوان ژورنال: New Astronomy
سال: 2010
ISSN: 1384-1076
DOI: 10.1016/j.newast.2009.11.008