The internal motion of quiescent prominences |
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| Authors: | Oddbjörn Engvold |
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| Institution: | (1) Institute of Theoretical Astrophysics, University of Oslo, Norway |
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| Abstract: | A study has been made of fine structure wavelength shift in the K line spectra from quiescent prominences. A persistent small scale motion is found in the prominence main body. In places where we see the characteristic thread like fine structure in the accompanying H filtergrams the average line-of-sight velocity amplitude is about 1 km s–1. A higher velocity ( 4 km s–1) is associated with a slightly coarser, mottled prominence fine structure. In the low lying regions, connecting the prominence body and the chromosphere, we do not detect any fine structure line shift (v  1/2 km s–1). |
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