On the propagation of p-modes into the solar chromosphere

Details On the propagation of p-modes into the solar chromosphere On the propagation of p-modes into the solar chromosphere

2009-08-10

arxiv.org/abs/0908.1383v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 4 figures, accepted for publication in ApJL

Scientific paper

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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