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Galactic Cosmic Rays at Mars and Venus: Temporal Variations from Hours to Decades Measured as the Background Signal of Onboard Microchannel Plates
DOI: 10.3847/1538-4357/ac9a49 Bibcode: 2022ApJ...940..178F

Barabash, Stas; Nilsson, Hans; Holmström, Mats +8 more

A microchannel plate (MCP) is a component widely used for counting particles in space. Using the background counts from MCPs on the Mars Express and Venus Express orbiters-operating over 17 yr and 8 yr, respectively-we investigated the galactic cosmic ray (GCR) characteristics of the inner solar system. The MCP background counts at Mars and Venus,…

2022 The Astrophysical Journal
MEx VenusExpress 5
Detecting the Oscillation and Propagation of the Nascent Dynamic Solar Wind Structure at 2.6 Solar Radii Using Very Long Baseline Interferometry Radio Telescopes
DOI: 10.3847/2041-8213/ac96e7 Bibcode: 2022ApJ...940L..32M

He, Jiansen; Venturi, Tiziana; Zhang, Peijin +30 more

Probing the solar corona is crucial to study the coronal heating and solar wind acceleration. However, the transient and inhomogeneous solar wind flows carry large-amplitude inherent Alfvén waves and turbulence, which make detection more difficult. We report the oscillation and propagation of the solar wind at 2.6 solar radii (Rs) by observation o…

2022 The Astrophysical Journal
MEx SOHO 3