Large-Scale Flows in Prominence Cavities

Details Large-Scale Flows in Prominence Cavities Large-Scale Flows in Prominence Cavities

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009apj...700l..96s&link_type=abstract

The Astrophysical Journal Letters, Volume 700, Issue 2, pp. L96-L98 (2009).

Astronomy and Astrophysics

Astronomy

8

Sun: Atmospheric Motions, Sun: Corona, Sun: Prominences, Sun: Uv Radiation

Scientific paper

Regions of rarefied density often form cavities above quiescent prominences. We observed two different cavities with the Coronal Multichannel Polarimeter on 2005 April 21 and with Hinode/EIS on 2008 November 8. Inside both of these cavities, we find coherent velocity structures based on spectral Doppler shifts. These flows have speeds of 5-10 km s-1, occur over length scales of tens of megameters, and persist for at least 1 hr. Flows in cavities are an example of the nonstatic nature of quiescent structures in the solar atmosphere.

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