EUV and radio observations of an equatorial coronal hole

Authors
Chiuderi-Drago, E Kerdraon, A Landi, E Fludra, A
Citation
E. Chiuderi-drago et al., EUV and radio observations of an equatorial coronal hole, SPACE SCI R, 87(1-2), 1999, pp. 141-144
Citations number
8
Categorie Soggetti
Space Sciences
Journal title
SPACE SCIENCE REVIEWS
ISSN journal
00386308 → ACNP
Volume
87
Issue
1-2
Year of publication
1999
Pages
141 - 144
Database
ISI
SICI code
0038-6308(1999)87:1-2<141:EAROOA>2.0.ZU;2-#
Abstract
An equatorial coronal hole has been observed on 18 and 19 October 1996 with SOHO-CDS and with the Nancay Radioheliograph (RH). The CDS EUV line intens ities are used to determine the coronal hole Differential Emission Measure (DEM); in turn this is used to compute the radio brightness temperature Tb at the observed frequencies, leaving the coronal electron temperature and d ensity as free parameters. EUV line intensities, calculated from the derive d models, show a good agreement with EUV observations.