✦ LIBER ✦

Coronal density structures in regions of type III activity

✍ Scribed by Y. Leblanc; T. B. H. Kuiper; S. F. Hansen

Publisher: Springer
Year: 1974
Tongue: English
Weight: 401 KB
Volume: 37
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00157858

No coin nor oath required. For personal study only.

✦ Synopsis

The Mauna Loa K-corona data were examined to determine the density in regions of type III activity which were observed during March and April, 1971, at Clark Lake Radio Observatory. It is found that these regions avoided the centres of dense structures in the corona. Both the K-corona data and the radio data indicated densities characteristic of the 'quiet' corona. The density gradients determined fi'om the K-corona and the radio data agreed to within their formal errors.

📜 SIMILAR VOLUMES

Solar radio type III bursts and coronal

Solar radio type III bursts and coronal density structures

✍ Yolande Leblanc; Jérôme Noë 📂 Article 📅 1977 🏛 Springer 🌐 English ⚖ 345 KB

Skylab observations of the coronal struc

Skylab observations of the coronal structure overlying a type III producing active region

✍ M. Pick; G. Trottet; R. M. MacQueen 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 591 KB

The coronal structure overlying, and presumably associated with, an isolated active region, McMath 12686, is identified during its west limb passage 15-17 January 1974. The region had a 'flaring site' on its border close to a plage filament and exhibited various forms of activity, including type III

Measuring electron density in coronal ac

Measuring electron density in coronal active regions

✍ J. C. Noëns; J. Pageault; G. Ratier 📂 Article 📅 1984 🏛 Springer 🌐 English ⚖ 1015 KB

In order to study the electron density at the scale of the most encountered structures in coronal active regions a new multichannel coronagraph associated with a photoelectric spectrograph is now used at the Pic-du-Midi Observatory. In its quasi-routine mode this instrument, which is described in th

Measuring electron density in coronal ac

Measuring electron density in coronal active regions

✍ J. -C. Noens; J. -L. Leroy 📂 Article 📅 1981 🏛 Springer 🌐 English ⚖ 923 KB

The coronal structure of active regions

✍ M. Landini; B. C. Monsignori Fossi; A. Krieger; G. S. Vaiana 📂 Article 📅 1975 🏛 Springer 🌐 English ⚖ 913 KB

A four-parameter model which assumes a Gaussian dependence of both temperature and pressure on distance from center is used to fit the compact part of coronal active regions as observed in X-ray photographs from a rocket experiment. The four parameters are the maximum temperature TM, the maximum pre

An investigation of the structure of cor

An investigation of the structure of coronal active regions

✍ J. H. Parkinson 📂 Article 📅 1973 🏛 Springer 🌐 English ⚖ 333 KB

The temperature and density structure of a 'typical' coronal active region is deduced from X-ray observations of several active regions. Observations of the limb transits of three regions from OSO-5 indicate that the X-ray emission originates between 2 x 104 km and 1.5 • 105 km. An emission measure-