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A Revised Understanding of the Structure of the Venusian Magnetotail From a High-Altitude Intercept With a Tail Ray by Parker Solar Probe
One of the major discoveries of NASA s 1979-1991 Pioneer Venus Orbiter is that the nightside ionosphere becomes filamentary at high altitude, forming comet-like tail rays. Pioneer Venus Orbiter could not establish how much farther into the wake of Venus tail rays extend, nor understand how they form. Here we present plasma and fields data from the fourth flyby of Venus by NASA s Parker Solar Probe consistent with an intercept with an ionospheric tail ray. The observations unambiguously demonstrate that Venusian Ionotail Rays ...
Collinson, Glyn; Ramstad, Robin; Frahm, Rudy; Wilson, Lynn; Xu, Shaosui; Whittlesey, Phyllis; Brecht, Stephen; Ledvina, Stephen;
Published by: \grl Published on: jan
YEAR: 2022   DOI: 10.1029/2021GL096485
Parker Data Used; Venus; Tail Rays; ionosphere; upper hybrid emission; parker solar probe; Atmospheric escape
Depleted Plasma Densities in the Ionosphere of Venus Near Solar Minimum From Parker Solar Probe Observations of Upper Hybrid Resonance Emission
On July 11, 2020, NASA s Parker Solar Probe made its third flyby of Venus. The upper hybrid resonance emission was observed below 1,100 km (a first at Venus), revealing electron densities an order of magnitude lower than at solar maximum. These observations are consistent with a substantial variation in the density and structure of the Venusian ionosphere over the Solar Cycle.
Collinson, Glyn; Ramstad, Robin; Glocer, Alex; Wilson, Lynn; Brosius, Alexandra;
Published by: Geophysical Research Letters Published on: 05/2021
YEAR: 2021   DOI: 10.1029/2020GL092243
ionosphere; parker solar probe; solar cycle; upper hybrid emission; Venus; waves; Parker Data Used