On the propagation of p-modes into the solar chromosphere
De Wijn, A. G., McIntosh, S. W., & De Pontieu, B. (2009). On the propagation of p-modes into the solar chromosphere. The Astrophysical Journal, 702, 4 pp. doi:10.1088/0004-637X/702/2/L168
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 per... Show moreWe 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 cutoff 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. Show less