Hostname: page-component-6bf8c574d5-m789k Total loading time: 0 Render date: 2025-03-07T03:16:05.492Z Has data issue: false hasContentIssue false
  • English
  • Français

Coronascope II observation of the white light corona from a stratospheric balloon

Published online by Cambridge University Press:  14 August 2015

Gordon Newkirk Jr.  and
J. David Bohlin
Gordon Newkirk Jr.
Affiliation:
High Altitude Observatory, Boulder, Colorado, U.S.A.
J. David Bohlin
Affiliation:
High Altitude Observatory, Boulder, Colorado, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

By use of an apodized occulting dish before the objective lens of a coronagraph the instrumentally scattered light can be reduced to about 10-9 B⊙. Observation of the streamers of the solar corona from 1.8 to 5.25 R⊙ outside of eclipse from a balloon at 30 km altitude are described. A solar streamer complex present at the west limb on 5 March 1964 was apparently the origin of the particles causing the recurrent geomagnetic storms of late 1963 and early 1964.

On a pu réduire la lumière diffusée dans un coronographe à 10—9 B⊙ en utilisant un disque occultan apodisé placé en avant de l'objectif. Des jets coronaux s'étendant jusqu'a 1,8 R⊙ et 5,25 R⊙ ont pu être ainsi observés à bord d'un ballon à 30 km d'altitude. Un ensemble de jets coronaux présent sur le limbe ouest, le 5 mars 1964, semble avoir constitué la source des particules qui ont causé les tempêtes géomagnétiques récurrentes de la fin 1963 et du début 1964.

Резюме

Резюме

Удалось привести диффузированный в коронографе свет до 10- во, используя блуждающий затемняющий, диск расположенный впереди объектива. Корональные струи, простирающиеся до 1,8 R⊙ и 5,26 R⊙, смогли таким образом быть наблюдены с борта воздушного шара на высоте 30 км. Совокупность корональных струй, имевшаяся на западном лимбе б марта 1964 г, по видимому была источником частиц произведших повторные геомагнитные бури в конце 1963 и начале 1964 г.

Type
Session VI. Visible and Infrared Radiation : Sun, Stars and Planets
Information
Symposium - International Astronomical Union , Volume 23: Astronomical Observations from Space Vehicles , 1965 , pp. 287 - 291
Copyright
Copyright © CNRS 1965 

References

1. Allen, C. W., 1955, Astrophysical Quantities, Athlone Press, p. 143.Google Scholar
2. Wlerick, G. and Axtell, J., 1957, Ap. J., 126, 253.Google Scholar
3. Dollfus, A., 1958, C. R., 246, 2345.Google Scholar
4. Newkirk, G., Curtis, G. W. and Watson, K., 1958, IGY Solar Activity Report Series No. 4.Google Scholar
5. Evans, J. W., 1948, JOSA, 38, 1038.CrossRefGoogle Scholar
6. Newkirk, G. and Eddy, J. A., 1962, Nature, 194, 638.Google Scholar
7. Newkirk, G. and Eddy, J. A., 1962, Sky and Telescope, 24, 77.Google Scholar
8. Newkirk, G. and Eddy, J. A., 1964, J. Attn. Sci., 21, 35.Google Scholar
9. Roizen-Dossier, B., 1956, Astronomical Optics and Related Subjects, Kopal, Z. ed., North Holland, Amsterdam, p. 16.Google Scholar
10. Barakat, R., 1962, JOSA, 52, 264.CrossRefGoogle Scholar
11. Purcell, J. D. and Koomen, M. J., paper presented at Spring Meeting, Optical Society of America, 14–17 March 1962.Google Scholar
12. Newkirk, G. and Bohlin, J. D., 1963, App. Opt., 2, 131.Google Scholar
13. Newkirk, G. and Bohlin, J. D., 1964, App. Opt., 3, 543.Google Scholar
14. Rogerson, J., 1958, Sky and Telescope, 17, 112.Google Scholar
15. Schwarzschild, M. and Schwarzschild, B., 1959, Sci. Amer., 200, 52.Google Scholar
16. Danielson, R. E., 1961, Ap. J., 134, 275.CrossRefGoogle Scholar
17. Newkirk, G. and Bohlin, J. D., 1964, Sky and Telescope, 28, 16.Google Scholar
18. Tousey, R., IAU Symposium No 23, p. 293.Google Scholar