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2. Toward the He to H full intensity ratios in quiescent prominences with filamentary structure
- Creator:
- Zharkova, V. V. and Morozhenko, N. N.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- heliophysics and quiescent prominences
- Language:
- Czech
- 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.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public