✦ LIBER ✦

Study of the post-flare loops on 29 July 1973

✍ Scribed by Z. Švestka; H. W. Dodson-Prince; S. F. Martin; O. C. Mohler; R. L. Moore; J. T. Nolte; R. D. Petrasso

Publisher: Springer
Year: 1982
Tongue: English
Weight: 753 KB
Volume: 78
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00151609

No coin nor oath required. For personal study only.

✦ Synopsis

We present revised values of temperature and density for the flare loops of 29 July 1973 and compare the revised parameters with those obtained aboard the SMM for the two-ribbon flare of 21 May 1980. The 21 May flare occurred in a developed sunspot group; the 29 July event was a spotless two-ribbon flare. We find that the loops in the spotless flare extended higher (by a factor of 1.4-2.2), were less dense (by a factor of 5 or more in the first hour of development), were generally hotter, and the whole loop system decayed much slower than in the spotted flare (i.e. staying at higher temperature for a longer time). We also align the hot X-ray loops of the 29 July flare with the bright H~ ribbons and show that the Hc~ emission is brightest at the places where the spatial density of the hot elementary loops is enhanced.

📜 SIMILAR VOLUMES

Study of the post-flare loops on 29 July

Study of the post-flare loops on 29 July 1973

✍ J. T. Nolte; M. Gerassimenko; A. S. Krieger; R. D. Petrasso; Z. Švestka 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 680 KB

Study of the post-flare loops on 29 July

Study of the post-flare loops on 29 July 1973

✍ R. D. Petrasso; J. T. Nolte; M. Gerassimenko; A. S. Krieger; R. Krogstad; F. H. 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 931 KB

We use the filter ratio method of analysis to determine spatially resolved values of plasma parameters in the X-ray emitting post-flare loop system which developed on 29 and 30 July 1973. We find that the loops were hotter and had higher plasma pressure at their tops than near their footpoints. The

Observational study of the ‘post’-flare

Observational study of the ‘post’-flare loops on June 4, 1991

✍ Z. B. Korobova; M. A. Sajdalieva 📂 Article 📅 1993 🏛 Springer 🌐 English ⚖ 525 KB

Studies on post-flare loop prominence of

Studies on post-flare loop prominence of 1981 April 27

✍ Zhang He-Qi; E. L. Chupp 📂 Article 📅 1989 🏛 Springer Netherlands 🌐 English ⚖ 635 KB

The effects of Alfvén waves on heating p

The effects of Alfvén waves on heating plasma in post-flare loops

✍ Jun Lin; Zhenda Zhang 📂 Article 📅 1992 🏛 Springer Netherlands 🌐 English ⚖ 642 KB

Spectrograph, filtergraph and magnetogra

Spectrograph, filtergraph and magnetograph observations of the two-ribbon flare of 29 July, 1973

✍ A. G. Michalitsanos; P. Kupferman 📂 Article 📅 1974 🏛 Springer 🌐 English ⚖ 875 KB

We present high resolution detailed observations of the class 3N two-ribbon flare of 1973, July 29 (McMath 12461), which was associated with the disappearance of a large filament ('disparition brusque'). This flare occurred in a diffuse bipolar magnetic region completely devoid of sunspots, and was