𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The height distribution of the kinetic temperature and turbulent velocity of solar Hα spicules

✍ Scribed by Koh Matsuno; Tadashi Hirayama

Publisher
Springer
Year
1988
Tongue
English
Weight
931 KB
Volume
117
Category
Article
ISSN
0038-0938

No coin nor oath required. For personal study only.

✦ Synopsis

The height distribution of the kinetic temperature of solar Hc~ spicules is determined using the widths of optically thin hydrogen and metallic lines obtained at the total solar eclipse of 1966: the temperature was found to be 8600 K at the height of 2200 km measured from the radial optical depth of unity at 5000 ~, and to decrease to a minimum of 5000 K _+ 180 K at 3200 km, and to increase again to 8200 K at 6000 km.

The height distribution of the non-thermal turbulent velocity is also determined and is shown to be consistent with the neutral helium line widths emitted at the kinetic temperature of 5000-8000 K.

📜 SIMILAR VOLUMES

Dynamics of Hα spicules according to spe
Dynamics of Hα spicules according to spectral observations at various heights of the solar chromosphere
✍ V. I. Kulidzanishvili 📂 Article 📅 1980 🏛 Springer 🌐 English ⚖ 537 KB

Almost simultaneous height sequences of 69 spicules in the Ha line have been studied. The spectra are obtained at six heights during 6 s on the east side of the solar disk with the 53-cm Lyot coronagraph of Abastumani Astrophysical Observatory. Radial velocities V,, total intensities or equivalent