Dopplershifts in the solar transition region

Details Dopplershifts in the solar transition region Dopplershifts in the solar transition region

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...378..257g&link_type=abstract

Astronomy and Astrophysics, v.378, p.257-265 (2001)

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We study the dynamics of the quiet sun transition region, using observations obtained with the SOHO CDS/NIS and SUMER spectrographs. We examine the morphology of the network as a function of temperature and we compare the intensity features with those of the dopplergrams. The velocity distributions have a different behaviour for the bright features which outline the network and the dark ones, located in the internetwork. A redshift and a smaller standard deviation are observed for the bright feature distributions relative to the dark ones. It should be mentioned that the internetwork is also statistically redshifted, with the exception of the He I line. Velocity distributions from different lines are compared.

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