Relationship between horizontal flow velocity and cell lifetime for supergranulation from SOHO Dopplergrams

dc.contributor.author	Paniveni, U
dc.contributor.author	Krishan, V
dc.contributor.author	Singh, J
dc.contributor.author	Srikanth, R
dc.date.accessioned	2008-09-15T10:31:10Z
dc.date.available	2008-09-15T10:31:10Z
dc.date.issued	2004-02-01
dc.identifier.citation	Monthly Notices of the Royal Astronomical Society, Vol. 347, No. 4, pp. 1279 - 1281	en
dc.identifier.issn	0035-8711
dc.identifier.uri	http://hdl.handle.net/2248/3604
dc.description.abstract	A study of 50 supergranular cells obtained from Solar and Heliospheric Observatory (SOHO) Dopplergrams was undertaken in order to investigate the relationship between the lifetime (T) and the horizontal flow velocity (vh) of the cells. For this sample, we find that the two parameters are correlated with a relation vh~T1/2 and T is identified by the eddy turnover time. This is in agreement with the turbulent convective model of the solar atmosphere, where the velocity spectrum of the supergranular field, given by the relation vh~L1/3, can be identified with the Kolmogorov spectrum for the eddy size L.	en
dc.language.iso	en	en
dc.publisher	Royal Astronomical Society	en
dc.relation.uri	http://www3.interscience.wiley.com/journal/118762075/abstract	en
dc.subject	Turbulence	en
dc.subject	Sun: granulation	en
dc.title	Relationship between horizontal flow velocity and cell lifetime for supergranulation from SOHO Dopplergrams	en
dc.type	Article	en
dc.type	Book	en