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Title: Alfven waves in a gravitational field with flows
Authors: Satya Narayanan, A
Kathiravan, C
Ramesh, R
Keywords: Sun: Oscillations
Issue Date: Mar-2009
Publisher: Cambridge University Press
Citation: Gopalswamy, Natchimuthukonar and Webb, David F. eds., Universal heliophysical processes., Proceedings of the 257th symposium of the International Astronomical Union held in Ioannina, Greece, Septmeber, 15 - 19, 2008, pp. 563 – 568
Series/Report no.: International Astronomical Union Symposium;No. 257
Abstract: The gravitational stratification effect on magnetohydrodynamic waves at a single interface in the solar atmosphere has been studied in the penumbral region of the sunspot recently. The existence of slow and fast magneto acoustic gravity waves and their characteristics has been discussed. The effect of flows on magneto acoustic gravity surface waves leads to modes called flow modes or v-modes. The present geometry is that of a plasma slab moving with uniform velocity surrounded by a plasma of different density. As is applicable to the corona, we assume that the plasma β to be small. The dispersion characteristics change significantly with a change in the value of G (gravity) and uniform flow.
Description: Restricted Access
ISBN: 9780521889889
???metadata.dc.rights???: © International Astronomical Union
Appears in Collections:IIAP Publications

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