Vertical Phase Variation and Mechanical Flux in the Solar 5-MINUTE Oscillation
Abstract
We have made observations of the solar five-minute oscillation that allow measurement of the difference of phase between absorption lines formed over a range of almost 1000 km in the photosphere and chromosphere. We derive phase velocities, group velocities, and mechanical fluxes. The amount of mechanical flux lost by the five-minute oscillation matches the estimated chromospheric radiative loss in quantity but has a different height distribution. This difference implies that a change in the mode of energy propagation may take place below 500 km. Subject headings:chromosphere, solar - solar atmospheric motions
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1973
- DOI:
- 10.1086/181306
- Bibcode:
- 1973ApJ...184L.131C