"Atlas" of numerical solutions for star-disk magnetospheric interaction

Abstract

Aims: I report results in numerical simulations of star-disk magnetospheric interaction. A thin accretion disk with corona above a rotating stellar surface is simulated in a parameter study, to find trends in the angular momentum flux. The results are presented in the case of Young Stellar Objects, but they can be rescaled to other objects with similar geometry. Methods: In the performed resistive and viscous magneto-hydrodynamic simulations, a quasi-stationary state is reached in the cases with different parameters. Angular momentum fluxes in the different components of the flow are computed, to compare the results. Results: Results in the simulations are presented with the matter density distribution and magnetic field geometry displayed in an `Atlas' of solutions. The torque exerted on the star is computed, together with the angular momentum flux loaded into outflow, in the cases when a conical outflow is formed. In the studied part of the parameter space, I find trends in both components of the flow.

15 pages, submitted to A&A

References in corpus (3)

• PLUTO: a Numerical Code for Computational Astrophysics
• Warps, bending and density waves excited by rotating magnetized stars: results of global 3D MHD simulations
• MHD simulations of resistive viscous accretion disk around millisecond pulsar

Cited by in corpus (12)

• Magnetic torques on T Tauri stars: accreting vs. non-accreting systems
• Inner dusty regions of protoplanetary discs -- II. Dust dynamics driven by radiation pressure and disc winds
• Accretion disc backflow in resistive MHD simulations
• Magnetically threaded accretion disks in resistive magnetohydrodynamic simulations and asymptotic expansion
• Energy distribution and substructure formation in astrophysical MHD simulations
• Backflow in Accretion Disk
• Trends in torques acting on the star during a star-disk magnetospheric interaction
• 2.5-MHD models of circumstellar discs around FS~CMa post-mergers : II. Stationary accretion stage
• Inner dusty regions of protoplanetary discs -- III. The role of non-radial radiation pressure in dust dynamics
• Light curve variation caused by accretion column switching stellar hemispheres
• Backflow in simulated MHD accretion disks
• Multipolar magnetic configuration: a trace of post-mergers events in circumstellar disks around FS CMa Stars