Travel Time and Phase Analysis of Waves in the Lower Solar Chromosphere

Details Travel Time and Phase Analysis of Waves in the Lower Solar Chromosphere Travel Time and Phase Analysis of Waves in the Lower Solar Chromosphere

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsh13c..04f&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SH13C-04

Astronomy and Astrophysics

Astrophysics

7500 Solar Physics, Astrophysics, And Astronomy, 7507 Chromosphere, 7522 Helioseismology, 7529 Photosphere

Scientific paper

In an effort to better understand how the chromospheric plasma and magnetic fields are guiding, converting and dissipating acoustic waves, we analyze high-cadence time series taken in Na I D2 589.0 nm and K I 769.9 nm that were obtained with the Magneto Optical Filters at Two Heights (MOTH) experiment at the South Pole in January 2003. These data are complemented by a very high spatial resolution time series taken in Na D with the Swedish Vacuum Solar Telescope in June 1992. The travel time maps, power maps, and phase diagrams show some unexpected behaviour, in particular in and around active regions.

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