CAOSP abstracts, Volume: 25, year: 1995
- Author(s): KUBACEK, D.; PITTICH, E.M.; ZVOLANKOVA, J.; TICHA, J.; TICHY, M.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 25, p. 83-89.
- Date: 09/1995
- Title: Aberration angles of comet Bradfield 1987 XXIX plasma tail
- Keyword(s): COMET BRADFIELD XXIX, PLASMA TAIL, SOLAR WIND
- Pages: 83 -- 89
A set of thirteen large-scale exposures of comet Bradfield 1987 XXIX
taken between 1987 November 8 and December 25 is evaluated. The observations
were obtained with the 63/85/187 cm Maksutov telescope of the Klet'
Observatory. The studied plasma tail with visible plasma rays, kinks, and
disconnection events on some exposures extends out of the field of the plates.
Therefore, the tail must have been longer than 1.75 degree. The dust antitail
on the best exposures is as long as 0.5 degree. For this period the solar wind
velocity is determined from the aberration angle of the plasma tail in the
comet's environment. The determined value of the solar wind velocity is
compared with the satellite data recorded near the Earth.
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