Probable detection of a bright infrared coronal emission line of Si ix near 3.93 microns

Citation
Jr. Kuhn et al., Probable detection of a bright infrared coronal emission line of Si ix near 3.93 microns, ASTROPHYS J, 521(1), 1999, pp. 478-482
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004-637X → ACNP
Volume
521
Issue
1
Year of publication
1999
Part
1
Pages
478 - 482
Database
ISI
SICI code
0004-637X(19990810)521:1<478:PDOABI>2.0.ZU;2-O
Abstract
We report here the probable detection of an emission line of Si nr that was observed from ant open C130 aircraft over the Pacific Ocean during the 199 8 total solar eclipse. Although the IR data themselves are inconclusive bec ause of the uncertainty in the precise central wavelengths of the narrowban d filters during the eclipse, the consistency of the measured IR limb exces s with simultaneous EUV emission measured by S0N0/Coronal Diagnostic Spectr ometer and the EUV Imager Telescope support our detection claim. This line appears to be the brightest IR coronal line yet observed, and its existence may significantly improve future prospects for obtaining optical coronal m agnetic held measurements.