Abstract
From the intensity of 19 EUV lines whose formation temperature anti T ranges from 3 x 10/sup 4/ to 1.4 x 10/sup 6/, two different models of the transition region and corona for the cell-centre and the network are derived. It is shown that both these models give radio brightness temperatures systematically higher than the observed ones. An agreement with radio data can be found only with lines formed at low temperature (anti T < 8.5 x 10/sup 5/) by decreasing the coronal temperature and the emission measure. The possibility of resolving the discrepancy by using different ion abundances has also been investigated with negative results.
Chiuderi Drago, F
[1]
- Osservatorio Astrofisico di Arcetri, Florence (Italy)
Citation Formats
Chiuderi Drago, F.
EUV and radio spectrum of coronal holes.
Netherlands: N. p.,
1980.
Web.
Chiuderi Drago, F.
EUV and radio spectrum of coronal holes.
Netherlands.
Chiuderi Drago, F.
1980.
"EUV and radio spectrum of coronal holes."
Netherlands.
@misc{etde_6114520,
title = {EUV and radio spectrum of coronal holes}
author = {Chiuderi Drago, F}
abstractNote = {From the intensity of 19 EUV lines whose formation temperature anti T ranges from 3 x 10/sup 4/ to 1.4 x 10/sup 6/, two different models of the transition region and corona for the cell-centre and the network are derived. It is shown that both these models give radio brightness temperatures systematically higher than the observed ones. An agreement with radio data can be found only with lines formed at low temperature (anti T < 8.5 x 10/sup 5/) by decreasing the coronal temperature and the emission measure. The possibility of resolving the discrepancy by using different ion abundances has also been investigated with negative results.}
journal = []
volume = {65:2}
journal type = {AC}
place = {Netherlands}
year = {1980}
month = {Mar}
}
title = {EUV and radio spectrum of coronal holes}
author = {Chiuderi Drago, F}
abstractNote = {From the intensity of 19 EUV lines whose formation temperature anti T ranges from 3 x 10/sup 4/ to 1.4 x 10/sup 6/, two different models of the transition region and corona for the cell-centre and the network are derived. It is shown that both these models give radio brightness temperatures systematically higher than the observed ones. An agreement with radio data can be found only with lines formed at low temperature (anti T < 8.5 x 10/sup 5/) by decreasing the coronal temperature and the emission measure. The possibility of resolving the discrepancy by using different ion abundances has also been investigated with negative results.}
journal = []
volume = {65:2}
journal type = {AC}
place = {Netherlands}
year = {1980}
month = {Mar}
}