Browsing by Author "Erdélyi, R."

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Browsing by Author "Erdélyi, R."

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  • Global Acoustic Resonance in a Stratified Solar Atmosphere 
    Taroyan, Y.; Erdélyi, R. (2008-09-01)
    The upward propagation of linear acoustic waves in a gravitationally stratified solar atmosphere is studied. The wave motion is governed by the Klein Gordon equation, which contains a cutoff frequency introduced by ...
  • Global oscillations in a magnetic solar model : II Oblique propagation 
    Pintér, Balázs; Erdélyi, R.; Goossens, M. (2007-04)
    The coupling of solar global acoustic oscillations to a magnetised solar atmosphere is studied here. The solar interior - atmosphere interface is modelled by a non-magnetic polytrope interior overlayed by a planar atmosphere ...
  • Heating Diagnostics with MHD Waves 
    Taroyan, Y.; Erdélyi, R. (2009-12-01)
    The heating of the solar atmosphere is a fundamental problem of modern solar and astrophysics. A review of the seismological aspects of magnetohydrodynamic (MHD) waves with an emphasis on standing longitudinal waves in the ...
  • Hinode EUV spectroscopic observations of coronal oscillations 
    Erdélyi, R.; Taroyan, Y. (2008-10-01)
    Context: Waves offer a unique opportunity to understand and diagnose the properties of the solar coronal plasma. Aims: Hinode/EIS observations are analysed to detect wave and oscillatory motions in the solar corona. Methods: ...
  • MHD Wave Heating Diagnostics 
    Taroyan, Y.; Erdélyi, R. (2010)
    Analyzing the structure of solar coronal loops is crucial to our understanding of the processes that heat and maintain the coronal plasma at multimillion degree temperatures. The determination of the physical parameters ...
  • Observational Signatures of Impulsively Heated Coronal Loops: Power-Law Distribution of Energies 
    Taroyan, Y.; Erdélyi, R.; Bradshaw, S. J. (2011-04)
    It has been established that small scale heating events, known as nanoflares, are important for solar coronal heating if the power-law distribution of their energies has a slope α steeper than −2 (α<−2). Forward modeling ...
  • Rotational splitting of helioseismic modes influenced by a magnetic atmosphere 
    New, R.; Pintér, Balázs; Erdélyi, R. (2001)
    In the present paper the splitting of sectoral () helioseismic eigenmodes (f- and p-modes) is studied in the presence of a magnetic atmosphere. The solar interior is in a steady state, with sub-photospheric plasma flow ...
  • Rotational splitting of helioseismic modes influenced by a magnetic atmosphere 
    Pintér, Balázs; New, R.; Erdélyi, R. (EDP Sciences, 2001-10)
    In the present paper the splitting of sectoral (m=+/- l) helioseismic eigenmodes (f- and p-modes) is studied in the presence of a magnetic atmosphere. The solar interior is in a steady state, with sub-photospheric plasma ...