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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/angeo-2019-94
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2019-94
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: review paper 15 Jul 2019

Submitted as: review paper | 15 Jul 2019

Review status
This discussion paper is a preprint. A revision of this manuscript was accepted for the journal Annales Geophysicae (ANGEO) and is expected to appear here in due course.

Dust observations with antenna measurements and its prospects for observations with Parker Solar Probe and Solar Orbiter

Ingrid Mann1, Libor Nouzák2, Jakub Vaverka2, Tarjei Antonsen1, Åshild Fredriksen1, Karine Issautier3, David Malaspina4, Nicole Meyer-Vernet3, Jiří Pavlů2, Zoltan Sternovsky4, Joan Stude5, Shengyi Ye6, and Arnaud Zaslavsky3 Ingrid Mann et al.
  • 1Department of Physics and Technology, UiT The Arctic University of Norway, 9037, Tromsø, Norway
  • 2Department of Surface and Plasma Science, Charles University, Prague, 180 00, Czech Republic
  • 3LESIA - Observatoire de Paris, Université PSL, CNRS, Sorbonne Université, Université de Paris, 5 place Jules Janssen, 92195 Meudon, France
  • 4Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA
  • 5Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
  • 6Department of Physics and Astronomy, University of Iowa, Iowa city, 52242-1479, Iowa, USA

Abstract. The electric and magnetic field instrument suite FIELDS on board the NASA Parker Solar Probe and the radio and plasma waves instrument RPWS on the ESA Solar Orbiter mission that explore the inner heliosphere are sensitive to signals generated by dust impacts. Dust impacts were observed using electric field antennas on spacecraft since the 1980s and the method was recently used with a number of space missions to derive dust fluxes. Here, we consider the details of dust impacts, subsequent development of the impact generated plasma and how it produces the measured signals. We describe empirical approaches to characterise the signals and compare to a qualitative discussion of laboratory simulations to predict signal shapes for spacecraft measurements in the inner solar system. While the amount of charge production from a dust impact will be higher near the sun than observed in the interplanetary medium before, the amplitude of pulses will be lower because of the different recovery behaviour that varies with the plasma environment. The photocurrent, that is expected to be higher near the Sun, is found to have moderate influence on the spacecraft potential.

Ingrid Mann et al.
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Ingrid Mann et al.
Ingrid Mann et al.
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