You need JavaScript to view this

EUV and radio spectrum of coronal holes

Journal Article:

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.
Authors:
Chiuderi Drago, F [1] 
  1. Osservatorio Astrofisico di Arcetri, Florence (Italy)
Publication Date:
Mar 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-579754; EDB-82-005736
Resource Relation:
Journal Name: Sol. Phys.; (Netherlands); Journal Volume: 65:2
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SOLAR CORONA; BRIGHTNESS; EMISSION SPECTRA; FAR ULTRAVIOLET RADIATION; RADIOWAVE RADIATION; STAR MODELS; ULTRAVIOLET SPECTRA; ELECTROMAGNETIC RADIATION; MATHEMATICAL MODELS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS; SPECTRA; ULTRAVIOLET RADIATION; 640104* - Astrophysics & Cosmology- Solar Phenomena
OSTI ID:
6114520
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: SLPHA
Submitting Site:
INIS
Size:
Pages: 237-250
Announcement Date:

Journal Article:

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 = {Sol. Phys.; (Netherlands)}
volume = {65:2}
journal type = {AC}
place = {Netherlands}
year = {1980}
month = {Mar}
}