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Kayoomars Karami

Kayoomars Karami

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 22979495000
HIndex:
Faculty: Faculty of Science
Address: Department of Physics, University of Kurdistan Pasdaran St., P.O.Box: 66177-15175 Sanandaj - Iran
Phone:

Research

Title
The effect of density stratification on the resonant absorption of MHD waves in coronal loops
Type
JournalPaper
Keywords
Sun: corona – Sun: magnetic fields – Sun: oscillations
Year
2009
Journal MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
DOI
Researchers Kayoomars Karami ، Sadollah Nasiri ، Sirwan amiri

Abstract

The standing quasi-modes of the ideal magnetohydrodynamics (MHD) in a zero-β cylindrical magnetic flux tube that undergoes a longitudinal density stratification and radial density structuring are considered. The radial structuring is assumed to be a linearly varying density profile. Using the relevant connection formulae of the resonant absorption, the dispersion relation for the fast MHD body waves is derived and solved numerically to obtain both the frequencies and damping rates of the fundamental and first-overtone, k = 1, 2, modes of both the kink (m = 1) and fluting (m = 2) waves, where k and m are the longitudinal and azimuthal mode numbers, respectively.