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Title:
Interplanetary gas. XXII - Interaction of comet Kohoutek's ion tail with the compression region of a solar-wind corotating stream
Authors:
Niedner, M. B., Jr.; Rothe, E. D.; Brandt, J. C.
Affiliation:
AA(NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md.), AB(NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md.), AC(NASA, Goddard Space Flight Center, Laboratory for Astronomy and Solar Physics, Greenbelt, Md.)
Publication:
Astrophysical Journal, Part 1, vol. 221, May 1, 1978, p. 1014-1025. (ApJ Homepage)
Publication Date:
05/1978
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL PHOTOMETRY, COMET TAILS, KOHOUTEK COMET, SATELLITE OBSERVATION, SOLAR WIND, IMP, INTERPLANETARY GAS, SOLAR CORONA, TIME LAG
Comment:
A&AA ID. AAA021.103.402
DOI:
10.1086/156107
Bibliographic Code:
1978ApJ...221.1014N

Abstract

An apparently successful identification of a comet-tail feature with a solar-wind event is presented. Photographs of comet Kohoutek 1973f show a large-scale disturbance in the middle and outer regions of the ion tail early on January 20 of 1974. On the previous and succeeding days the comet had, however, a 'normal' and less active appearance. The peculiar tail structure is linked to an encounter with rapidly changing solar-wind conditions on the forward edge of the high-velocity solar-wind stream which encountered the earth late on January 24. The stream produced a geomagnetic storm of the recurrent type. The high-speed stream appears to have been associated with a large near-equatorial coronal hole which underwent central meridian passage on January 22. It is proposed that the comet was in the compression region on the stream forward edge at the time of formation of the tail disturbance. The accuracy of the time delays is actually tested by an application of the wind shock theory of ionic tail orientations.

Associated Articles

Part 1     Part  2     Part  3     Part  4     Part  5     Part  6     Part  7     Part  8     Part  9     Part 10     Part 12     Part 11     Part 13     Part 14     Part 15     Part 16     Part 17     Part 19     Part 18     Part 20     Part 21     Part 22     Part 23     Part 24    

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