Observations of Doppler velocity oscillations of mass motion in a quiescent prominence during three consecutive days

Details Observations of Doppler velocity oscillations of mass motion in a quiescent prominence during three consecutive days Observations of Doppler velocity oscillations of mass motion in a quiescent prominence during three consecutive days

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235..428m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 235, no. 1-2, Aug. 1990, p. 428-430.

Astronomy and Astrophysics

Astrophysics

11

Doppler Effect, Solar Oscillations, Solar Prominences, Velocity Distribution, H Alpha Line, Helioseismology, Periodic Variations, Solar Spectra

Scientific paper

Using a spatially-differential method Doppler velocity oscillations of mass motion in the H-beta line were measured in a quiescent prominence during three days in July 1986. The length of time sequences ranged from 2 to 5 h. Previous result has been confirmed, namely that long-period oscillations are a typical property of quiescent prominences. Oscillation spectra of the prominence have a complicated structure in the region below 1.0 mHz; short-period variations of Doppler velocity are absent. During all the observing days, the quasi-hourly period was dominant.

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