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Alfven Waves in the Lower Solar Atmosphere
2009
Science
We report the detection of oscillatory phenomena associated with a large bright-point group that is 430,000 square kilometers in area and located near the solar disk center. Wavelet analysis reveals full-width half-maximum oscillations with periodicities ranging from 126 to 700 seconds originating above the bright point and significance levels exceeding 99%. These oscillations, 2.6 kilometers per second in amplitude, are coupled with chromospheric line-of-sight Doppler velocities with an
doi:10.1126/science.1168680
pmid:19299614
fatcat:no72luf3qvb73i6wih2u2kl7fm