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

AuthorMann, Ingrid; ak, Libor; Vaverka, Jakub; Antonsen, Tarjei; Fredriksen, \r; Issautier, Karine; Malaspina, David; Meyer-Vernet, Nicole; u, Ji\v; Sternovsky, Zoltan; Stude, Joan; Ye, Shengyi; Zaslavsky, Arnaud;
KeywordsParker Data Used; parker solar probe; Solar Probe Plus

The electric and magnetic field instrument suite FIELDS on board the NASA Parker Solar Probe and the radio and plasma waves instrument RPW on the ESA Solar Orbiter mission that explore the inner heliosphere are sensitive to signals generated by dust impacts. Dust impacts have been 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 these in 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 is determined by the recovery behaviour that is different near the Sun since it varies with the plasma environment.

Year of Publication2019
JournalAnnales Geophysicae
Number of Pages1121-1140
Date Published12/2019