31 citations · 335 across the 31 of their papers we have counts for
8 papers · 1 filter
Survivability of Amorphous Ice in Comets Depends on the Latent Heat of Crystallization of Impure Water Ice
Sota Arakawa, Shigeru Wakita
Comets would have amorphous ice rather than crystalline one at the epoch of their accretion. Cometary ice contains some impurities that govern the latent heat of ice crystallizatio…
Root mean squares of distance and geodesic between two constituent particles within fractal aggregates prepared by BCCA, DLA, and GSAW procedures
Sota Arakawa
Understanding the geodesic properties of fractal aggregates is essential, as their thermal and mechanical properties are characterized by their geodesics. In this study, we investi…
Oxygen Isotope Exchange Between Molten Silicate Spherules and Ambient Water Vapor with Nonzero Relative Velocity: Implication for Chondrule Formation Environment
Sota Arakawa, Daiki Yamamoto, Takayuki Ushikubo +4
Oxygen isotope compositions of chondrules reflect the environment of chondrule formation and its spatial and temporal variations. Here, we present a theoretical model of oxygen iso…
Size Dependence of the Bouncing Barrier in Protoplanetary Dust Growth
Sota Arakawa, Satoshi Okuzumi, Misako Tatsuuma +5
Understanding the collisional behavior of dust aggregates is essential in the context of planet formation. It is known that low-velocity collisions of dust aggregates result in bou…
Insights on the Sun birth environment in the context of star-cluster formation in hub-filament systems
Doris Arzoumanian, Sota Arakawa, Masato I. N. Kobayashi +7
Cylindrical molecular filaments are observed to be the main sites of Sun-like star formation, while massive stars form in dense hubs, at the junction of multiple filaments. The rol…
Interpebble contact radius in a comet nucleus
Sota Arakawa, Daisuke Nishiura, Mikito Furuichi
In recent years, the gravitational collapse of pebble clumps in the early Solar System has been regarded as a plausible scenario for the origin of comets. In this context, ``pebble…
Igneous Rim Accretion on Chondrules in Low-Velocity Shock Waves
Yuji Matsumoto, Sota Arakawa
Shock wave heating is a leading candidate for the mechanisms of chondrule formation. This mechanism forms chondrules when the shock velocity is in a certain range. If the shock vel…
Threshold velocity for collisional growth of porous dust aggregates consisting of cohesive frictionless spheres
Sota Arakawa, Hidekazu Tanaka, Eiichiro Kokubo +2
Understanding the collisional outcomes of dust aggregates and dependence on material properties of the constituting particles is of great importance toward understanding planet for…