125 citations · 406 across the 9 of their papers we have counts for
9 papers
Protostellar collapse simulations in spherical geometry with dust coagulation and fragmentation
Ugo Lebreuilly, Valentin Vallucci-Goy, Vincent Guillet +2
We model the coagulation and fragmentation of dust grains during the protostellar collapse with our newly developed shark code. It solves the gas-dust hydrodynamics in a spherical…
Universal protoplanetary disk size under complete non-ideal magnetohydrodynamics: The interplay between ion-neutral friction, Hall effect, and the Ohmic dissipation
Yueh-Ning Lee, Pierre Marchand, Yu-Hsuan Liu +1
The role of non-ideal magnetohydrodynamics has been proven critical during the formation of the protoplanetary disk, particularly in regulating its size. We provide a simple model…
Fast methods for tracking grain coagulation and ionization. I. Analytic derivation
Pierre Marchand, Vincent Guillet, Ugo Lebreuilly +1
Dust grains play a major role in many astrophysical contexts. They affect the chemical, magnetic, dynamical, and optical properties of their environment, from galaxies down to the…
Eigenvalues of the truncated Helmholtz solution operator under strong trapping
Jeffrey Galkowski, Pierre Marchand, Euan A. Spence
For the Helmholtz equation posed in the exterior of a Dirichlet obstacle, we prove that if there exists a family of quasimodes (as is the case when the exterior of the obstacle has…
Protostellar collapse: regulation of the angular momentum and onset of an ionic precursor
Pierre Marchand, Kengo Tomida, Kei Tanaka +2
Through the magnetic braking and the launching of protostellar outflows, magnetic fields play a major role in the regulation of angular momentum in star formation, which directly i…
Dust coagulation feedback on magnetohydrodynamic resistivities in protostellar collapse
V. Guillet, P. Hennebelle, G. Pineau des Forêts +3
The degree of coupling between the gas and the magnetic field during the collapse of a core and the subsequent formation of a disk depends on the assumed dust size distribution. We…