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

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2076

Title:	Relationship between horizontal flow velocity and cell lifetime for supergranulation from SOHO Dopplergrams
Authors:	Paniveni, U. Krishan, Vinod Singh, J.S. Srikanth, R.
Keywords:	turbulence Sun: granulation
Issue Date:	Feb-2004
Publisher:	Blackwell Publishing for the Royal Astronomical Society
Citation:	Monthly Notices of the Royal Astronomical Society, 2004, Vol.347, Issue 4, p1279-1281
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.
Description:	Restricted access.
URI:	http://hdl.handle.net/2289/2076
ISSN:	0035-8711
Alternative Location:	http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004MNRAS.347.1279P&link_type=PREPRINT&db_key=AST http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004MNRAS.347.1279P&link_type=ARTICLE&db_key=AST
Copyright:	(2004) Blackwell Publishing for the Royal Astronomical Society
Appears in Collections:	Research Papers (LAMP)

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