✦ LIBER ✦

Radiation loss and mechanical heating in the low solar chromosphere

✍ Scribed by F. Praderie; R. N. Thomas

Publisher: Springer
Year: 1976
Tongue: English
Weight: 579 KB
Volume: 50
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00155296

No coin nor oath required. For personal study only.

✦ Synopsis

We discuss Ulmschneider's claim to have established that the short-period acoustic wave energy input is the only one able to balance the chromospheric radiation loss. We first review the range of uncertainty in empirical and radiative equilibrium models, on which estimates of the excess radiation coming from mechanical heating rest. We then show that Ulmschneider's estimate of this excess radiation from such models uses an over-simplified computational method. The resultant of uncertainty in models and in computational methods suggests that Ulmschneider's results on excess radiation from heating in the low chromosphere is subject to overestimation by an order of magnitude.

📜 SIMILAR VOLUMES

Radiation loss and mechanical heating in

Radiation loss and mechanical heating in the solar chromosphere

✍ Peter Ulmschneider 📂 Article 📅 1974 🏛 Springer 🌐 English ⚖ 489 KB

Is the solar 5 min oscillation an import

Is the solar 5 min oscillation an important heating mechanism for the chromosphere and the corona?

✍ Peter Ulmschneider 📂 Article 📅 1976 🏛 Springer 🌐 English ⚖ 233 KB

Missing power in the spectrum of intensity fluctuations of both XUV and radio emission in the transition layer and inner corona as well as the 90 ~ phase shift between intensity and velocity fluctuations in the chromosphere indicate that the 5 rain oscillation transports little energy and is not a s

On the ratio between the mechanical flux

On the ratio between the mechanical fluxes in- and outside the solar chromospheric mottles

✍ C. Jager; C. Loore 📂 Article 📅 1970 🏛 Springer 🌐 English ⚖ 231 KB

Chromospheric heating by electron and pr

Chromospheric heating by electron and proton bombardment in the solar flare of June 7, 1980

✍ A. Gordon Emslie 📂 Article 📅 1983 🏛 Springer 🌐 English ⚖ 370 KB

Using observations of both hard X-rays and y-rays in the large solar flare on June 7, 1980, we infer the amount of chromospheric heating due to bombardment both by non-thermal electrons and by protons, respectively. If a thick-target model for the X-ray bremsstrahlung is adopted, then proton heating

Low frequency turbulence in the solar co

Low frequency turbulence in the solar corona and fundamental radiation of type III solar radio burst

✍ T. Takakura 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 364 KB

On the solar oblateness: The combined ef

On the solar oblateness: The combined effect of a pole-equator difference in effective temperature and mechanical heating

✍ B. R. Durney; N. E. Werner 📂 Article 📅 1971 🏛 Springer 🌐 English ⚖ 277 KB

With the help of a model atmosphere of the Sun we evaluate the pole-equator difference in flux (as measured by Dicke and Goldenberg) assuming the following type of pole-equator temperature difference (A T = Te --T~) : (a) A T ~ 2 K for r > r0 (r0 ~ 0.05); (b) A T ~ 10 K for r < r 0. The small ATat