4 papers
Overview of Hayabusa2 extended mission's flyby of Near-Earth Asteroid (98943) Torifune
Masatoshi Hirabayashi, Masahiko Hayakawa, Yuya Mimasu +18
The Hayabusa2 extended mission, nicknamed Hayabusa2# (# is pronounced SHARP, which stands for the Small Hazardous Asteroid Reconnaissance Probe), is JAXA's small body explorer to c…
Coupled Space Weathering: Nanophase Iron Formation by Micrometeoroid Impact and Solar Wind Sputtering
Ziyu Huang, Masatoshi Hirabayashi
Understanding the interplay between micrometeoroid impacts and solar wind irradiation is crucial for interpreting lunar surface evolution. Using reactive molecular dynamics simulat…
Revealing Exotic Nanophase Iron in Lunar Samples Through Impact-Driven Spatial Fingerprints
Ziyu Huang, Masatoshi Hirabayashi
Nanophase iron (npFe) plays a crucial role in controlling the optical, chemical, and physical evolution of lunar regolith grains. While in-situ formation of npFe via reduction of n…
Micrometeoroid Impacts: Dual Pathways for Iron Reduction and Oxidation on Lunar and Asteroidal Surfaces
Ziyu Huang, Masatoshi Hirabayashi, Thomas M. Orlando
Nanophase metallic iron ( ) is a key indicator of space weathering on the lunar surface, primarily attributed to solar wind irradiation and micrometeoroid impacts…