Excitation and damping of slow magnetosonic standing waves in a solar coronal loop

Details Excitation and damping of slow magnetosonic standing waves in a solar coronal loop Excitation and damping of slow magnetosonic standing waves in a solar coronal loop

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...436..701s&link_type=abstract

Astronomy and Astrophysics, Volume 436, Issue 2, June III 2005, pp.701-709

Astronomy and Astrophysics

Astrophysics

28

Sun: Corona, Sun: Magnetohydrodynamics (Mhd), Sun: Oscillations

Scientific paper

We consider slow magnetosonic standing waves that are impulsively excited in a solar coronal loop. The one-dimensional numerical model we implement includes the effects of nonlinearity, optionally thermal conduction, heating, and cooling of the solar plasma. We numerically evaluate excitation and damping times of a standing wave in hot coronal loops on the basis of a parametric study. Results of the numerical simulations reveal that initially launched impulses mainly trigger the fundamental mode and its first harmonic, depending on the location of these pulses in space. Parametric study shows that these standing waves are excited in a dozen or so wave periods corresponding roughly to 13 min and that they are strongly damped over a similar time-scale.

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