Do mesogranules exist?

Details Do mesogranules exist? Do mesogranules exist?

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989soph..123...21w&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 123, no. 1, 1989, p. 21-32.

Physics

15

Doppler Effect, P Waves, Solar Granulation, Solar Oscillations, Benard Cells, Spatial Resolution, Temporal Resolution

Scientific paper

The application of spatial and temporal averaging techniques to several long sequences of Dopplergrams obtained at the solar disk center and near the limb confirmed the persistent supergranule velocity pattern. After excluding the 5-min oscillation and supergranule velocity fields from the disk center Doppler data, it is found that the velocity structure shows a typical scale of 7 Mm, consistent with the scale of mesogranules found by November, Toomre, and Gebbie (1981) and November et al. (1982). However, this velocity pattern does not show properties of the cellular convection. It is proposed that the mesogranule velocity structure found by November et al. might be the uncorrected part of the 5-min oscillations and granule velocity.

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