Gravity waves in the lower solor corona

Details Gravity waves in the lower solor corona Gravity waves in the lower solor corona

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...442..401l&link_type=abstract

The Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 442, no. 1, p. 401-404

Astronomy and Astrophysics

Astrophysics

8

Gravity Waves, Magnetohydrodynamics, Solar Corona, Solar Granulation, Solar Magnetic Field, Solar Transition Region, Trapping, Amplitudes, Magnetic Effects, Perturbation Theory, Scale Height, Velocity Distribution

Scientific paper

Above the solar transition region (STR), trapped coronal gravity waves with timescales longer than 1 hr could exist within the field-free or weak-fields spatial region above a supergranule. In the hydrodynamic case, the trapping efficiency from above is higher for high-degree and low-frequency coronal gravity waves. We describe several signatures of the gravity waves trapped in the lower coronal and discuss the influence of magnetic fields concentrated along supergranule boundaries. We also indicate the possible appearance of coherent coronal gravity waves within large surface patches containing many supergranules.

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