A High Resolution Study of Umbral Flashes and Running Penumbral Waves using Hinode Observations

Details A High Resolution Study of Umbral Flashes and Running Penumbral Waves using Hinode Observations A High Resolution Study of Umbral Flashes and Running Penumbral Waves using Hinode Observations

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12.2.27j&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We present a study of intensity oscillations in sunspots using high resolution ( temporal and spatial) CaII H data and Gband data from Hinode. The intensity variations show increased power at 5.5mHz in umbra and frequency decreases as we move towards penumbra and outwards. An attempt was also made to find any relationship between the dark umbra and oscillation power and umbral fine structure and oscillation power but no obious relation could be established.

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