Production of a short-lived filament by a surge
- Creators
- Zirin, H.
Abstract
A large surge was observed on September 17, 1971, part of which, after travelling 200 000 km through the corona, returned to the surface to form a filament. The filament lasted about 30 min, then rose up and returned to the source of the surge. We interpret this as the filling of a semi-stable magnetic trap. The energetics of radio, X-ray, and surge expulsion are estimated. The radio spectrum and flux correspond to a thermal source of area 4 (arcmin)², T ∼ 190 000 K, N²_e V ∼ 7 × 10⁴⁸, which is optically deep at 8800 MHz. The soft X-ray source has T ∼ 12 × 10⁶ K, N²_e V ∼ 3 × 10⁴⁸; and if an equal mass is expelled in the surge, the kinetic energy of the surge is similar to the thermal energy of the X-ray source.
Additional Information
© 1976 Kluwer Academic Publishers. Provided by the NASA Astrophysics Data System. Received 26 March; in final form 5 August, 1976. I would like to thank Drs John Castelli and Max Bleiweiss for providing the radio data. This work was supported by NASA grant NGR 05 002 034, NSF grant ATM74-13489 and Air Force Contract F19628-76-C-0055.Attached Files
Published - 1976SoPh___50__399Z.pdf
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Additional details
- Eprint ID
- 103939
- Resolver ID
- CaltechAUTHORS:20200616-073936474
- NGR 05 002 034
- NASA
- F19628-76-C-0055
- Air Force Office of Scientific Research (AFOSR)
- Created
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2020-06-22Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field