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Conference Papers Year : 2021

Impact induced electric field signals observed by the Solar Orbiter/RPW

Stuart Bale
Thomas Chust
Jan Souček

Abstract

A large-amplitude impact-induced like electric field signal is often observed by the Radio and Plasma Wave (RPW) Instrument onboard Solar Orbiter. The signal has a sharp increase followed by an exponential decay, typically observed when spacecraft experiences a dust impact. The amplitude can reach several V/m. The impact dust size can be estimated from the electric field amplitude and is similar to the characteristic dust size near the sun expected from the zodiacal-light observations. On the other hand, the signal's decay time is the order of second, unusually long compared to the dust impact signals previously reported by the other spacecraft. We will show the characteristics of these signals and discuss the origin.
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Origin Publication funded by an institution

Dates and versions

hal-03215400 , version 1 (03-05-2021)

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Michiko Morooka, Yuri Khotyaintsev, Anders Eriksson, Niklas Edberg, Erik Johansson, et al.. Impact induced electric field signals observed by the Solar Orbiter/RPW. EGU General Assembly 2021, Apr 2021, online, France. ⟨10.5194/egusphere-egu21-13801⟩. ⟨hal-03215400⟩
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