Plumes and oscillations in the sunspot transition region

Details Plumes and oscillations in the sunspot transition region Plumes and oscillations in the sunspot transition region

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...373l...1m&link_type=abstract

Astronomy and Astrophysics, v.373, p.L1-L4 (2001)

Astronomy and Astrophysics

Astrophysics

19

Sun: Oscillations, Sun: Transition Region, Euv Radiation, Sunspots

Scientific paper

The suggestion that sunspot transition region oscillations are a typical feature of the sunspot plumes is examined. The present observations show 3 min oscillations in the umbra that end at the umbral rim. We find that sunspot plumes located above the umbra show these oscillations, in contrast to plumes above the penumbra. These two findings suggest that the oscillations may be a property of the umbral transition region.

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