𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Observed and theoretical profiles of the Siiilines at λ1814

✍ Scribed by G. D. Finn; H. C. McAllister

Publisher
Springer
Year
1978
Tongue
English
Weight
546 KB
Volume
56
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.

✦ Synopsis

Emission line spectra observed at the limb of the solar disc are presented for transitions of singly ionized silicon at ,~&1816.93, 1817.45 and 1808.01. The profiles show self-reversals in the line cores. A non-LTE analysis for a simplified model of the silicon ion is presented and calculated line profiles are compared with the observations. The study indicates that some modification of the Vernazza et al, (1973) model of the solar chromosphere in the transition region is needed to reconcile the calculated and observed profiles.

📜 SIMILAR VOLUMES

Some comparisons between observed wind p
Some comparisons between observed wind profiles at Risø and theoretical predictions for flow over inhomogeneous terrain
✍ E. L. Petersen; P. A. Taylor 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 English ⚖ 368 KB

## Abstract Velocity profiles observed in near neutral conditions at the Risø 125 m tower are presented. The upwind terrain contains, depending on wind direction, either one or two distinct changes in surface roughness. Comparisons are made between the observed profiles and those predicted using m