Connecting a Magnetized Disk to a Convective Low-mass Protostar
Speaker: Shinsuke Takasao (Musashino Art University)
Abstract:
In the early stages of star formation, boundary layer accretion—in which protostars accrete material from disks extending down to their surfaces—plays a crucial role. However, understanding how a magnetorotational-instability (MRI)-active disk connects to the protostellar surface remains a major challenge. To explore the mechanisms governing mass and angular momentum transfer, we develop a global, three-dimensional magnetohydrodynamic model of boundary layer accretion around a magnetized, convective low-mass protostar. I will present how the stellar magnetic field—coupled with stellar convection and inner disk accretion flows—strongly influences the accretion structure.