The detection of mesogranulation on the sun

Time averages of velocity measurements at disk center on the quiet Sun reveal the presence of a fairly stationary pattern of cellular flow with a spatial scale of 5--10 Mm. Such mesogranulation has a spatial rms vertical velocity amplitude of about 60 ms/sup -1/ superposed on the larger scale superg...

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Veröffentlicht in:	Astrophys. J., Lett. Ed.; (United States) Lett. Ed.; (United States), 1981-05, Vol.245, p.L123
Hauptverfasser:	November, L. J., Toomre, J., Gebbie, K. B., Simon, G. W.
Format:	Artikel
Sprache:	eng
Schlagworte:	640104 - Astrophysics & Cosmology- Solar Phenomena CALCIUM IONS CHARGED PARTICLES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CONVECTION DATA ANALYSIS DETECTION ENERGY SPECTRA IONS MAIN SEQUENCE STARS OSCILLATIONS RADIATION DETECTION SOLAR ACTIVITY SOLAR GRANULATION SPECTRA STARS SUN
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Beschreibung
Zusammenfassung:	Time averages of velocity measurements at disk center on the quiet Sun reveal the presence of a fairly stationary pattern of cellular flow with a spatial scale of 5--10 Mm. Such mesogranulation has a spatial rms vertical velocity amplitude of about 60 ms/sup -1/ superposed on the larger scale supergranular flows. The lifetimes of mesogranules appear to be at least 2 hr.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/183539