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The dust-to-gas ratio, size distribution, and dust fall-back fraction of comet 67P/Churyumov-Gerasimenko: Inferences from linking the optical and dynamical properties of the inner comae.
DOI: 10.3389/fphy.2020.00227 Bibcode: 2020FrP.....8..227M

Thomas, Nicolas; Marschall, Raphael; Wu, Jong-Shinn +3 more

In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of dust re-deposition, and total mass production rates for comet 67P/Churyumov-Gerasimenko. We use a 3D Direct Simulation Monte Carlo (DSMC) gas dynamics code to simulate the inner gas coma of the comet for the duration of the Ros…

2020 Frontiers in Physics
Rosetta 41
AME: A Cross-scale Constellation of CubeSats to Explore Magnetic Reconnection in the Solar-Terrestrial Relation
DOI: 10.3389/fphy.2020.00089 Bibcode: 2020FrP.....8...89D

Dunlop, Malcolm; Khotyaintsev, Yuri; Phan, Tai +25 more

A major subset of solar-terrestrial relations, responsible in particular for the driver of space weather phenomena, is the interaction between the Earth's magnetosphere and the solar wind. As one of the most important modes of the solar-wind-magnetosphere interaction, magnetic reconnection regulates the energy transport and energy release in the s…

2020 Frontiers in Physics
Cluster 24
The Capon method for Mercury's magnetic field analysis
DOI: 10.3389/fphy.2020.00249 Bibcode: 2020FrP.....8..249T

Motschmann, Uwe; Toepfer, Simon; Narita, Yasuhito +1 more

Characterization of Mercury's internal and external magnetic field is one of the primary goals of the magnetometer experiment on board the BepiColombo MPO (Mercury Planetary Orbiter) spacecraft. A novel data analysis tool is developed to determine the Gauss coefficients in the multipole expansion using Capon's minimum variance projection method. T…

2020 Frontiers in Physics
BepiColombo 8