Toward the He to H full intensity ratios in quiescent prominences with filamentary structure

Title:

Toward the He to H full intensity ratios in quiescent prominences with filamentary structure

Creator:

Zharkova, V. V. and Morozhenko, N. N.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:ade4333b-1528-460f-bf33-fa65497fe159
uuid:ade4333b-1528-460f-bf33-fa65497fe159

Subject:

heliophysics and quiescent prominences

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In quiescent prominences of a different brightness the full intensity ratios of He to H are varied in the different parts of the features. In the outside, more thin, parts of bright prominences or in the faint prominences a helium emission is stronger than hydrogen one. With a brightness increase the full intensity ratio of He to H is decreased. A modern interpretation of this ratio behaviour is connected with a fine filamentary structure of quiescent prominences. In this paper we consider a model filamentary feaaure, with different values fo structure coefficients, which consists of He and H atoms in excited and ionized states. We solve the non-LTE problem for the main transitions, coupled with the statistical equilibrium equations for a set of physical parameters typical for a quiescent prominence. As the result we compute He(3888) to Hα ratios and compare them with observations. We find this ratio to be sensitive to structural parameters, as some other ones.

Language:

Czech

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

246-246

Source:

Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic | 1998 Volume:87-88 | Number:88

Harvested from:

CDK

Metadata only:

false