Solar Oscillations And Acoustic Power Measured In H-alpha

Details Solar Oscillations And Acoustic Power Measured In H-alpha Solar Oscillations And Acoustic Power Measured In H-alpha

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.1731j&link_type=abstract

American Astronomical Society, SPD meeting #42, #17.31; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We present initial studies of the evidence of acoustic power in H alpha data observed with the ISOON telescope. Uninterrupted times series were obtained at 1-minute cadence of the H alpha intensity and Doppler velocity signals of both quiet and active regions on the Sun. Spatial and temporal power maps show enhanced contributions from a flaring active region that is a strong function of frequency. Cross-correlations and wave travel times are computed and give indications of the presence of running waves below the acoustic cut-off frequency.

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