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Астронет: Астрономическая картинка дня Переменный ионный хвост кометы Хейла-Боппа http://variable-stars.ru/db/msg/1163339/eng |
Credit & Copyright: A. Dimai, D. Ghirardo and R. Volcan
(Col Druscie
Obs.,
ACC)
Explanation:
What's happening to Comet Hale-Bopp's blue ion tail?
The comet's
ion tail is fluctuating more rapidly
as it passes a region of changing
solar wind.
As the comet passes from north to south, it crosses the plane of the
Sun's equator,
where the solar
magnetic field changes direction. Ions from the
solar wind,
which cause
Comet Hale-Bopp's
ion tail, act unpredictably here. Therefore,
Comet Hale-Bopp's ion tale may show unusual structure or even a
disconnection
- where the tail appears to break off and then reestablish itself later. The
above
picture, taken April 30th, indeed shows unusual structure in the blue ion tail.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.