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First observation of energetic neutral atoms in the Venus environment.
PLANET SPACE SCI
807 - 811.
The ASPERA-4 instrument on board the Venus Express spacecraft offers for the first time the possibility to directly measure the emission of energetic neutral atoms (ENAs) in the vicinity of Venus. When the spacecraft is inside the Venus shadow a distinct signal of hydrogen ENAs usually is detected. It is observed as a narrow tailward stream, coming from the dayside exosphere around the Sun direction. The intensity of the signal reaches several 10(5) cm(-1) sr(-1) s(-1), which is consistent with present theories of the plasma and neutral particle distributions around Venus. (c) 2007 Elsevier Ltd. All rights reserved.
|Title:||First observation of energetic neutral atoms in the Venus environment|
|Keywords:||Venus exosphere, ENAs, solar wind-planetary atmosphere interaction, SOLAR-WIND INTERACTION, HYDROGEN, EXPRESS, OXYGEN, IONS, MARS|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Space and Climate Physics|
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