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On the propagation of p-modes into the solar chromosphere

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arxiv 0908.1383 v1 pith:JZU6HBJK submitted 2009-08-10 astro-ph.SR

On the propagation of p-modes into the solar chromosphere

classification astro-ph.SR
keywords chromospherepropagationwavesexpectedfieldonlyperiodsphotosphere
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We employ tomographic observations of a small region of plage to study the propagation of waves from the solar photosphere to the chromosphere using a Fourier phase-difference analysis. Our results show the expected vertical propagation for waves with periods of 3 minutes. Waves with 5-minute periods, i.e., above the acoustic cut-off period, are found to propagate only at the periphery of the plage, and only in the direction in which the field can be reasonably expected to expand. We conclude that field inclination is critically important in the leakage of p-mode oscillations from the photosphere into the chromosphere.

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