Temperature Structure in the Inner Regions of Protoplanetary Disks: Inefficient Accretion Heating Controlled by Nonideal Magnetohydrodynamics

• Published in: The Astrophysical journal Vol. 872; no. 1; pp. 98 - 115
• Main Authors: Mori, Shoji, Bai, Xue-Ning, Okuzumi, Satoshi
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 10.02.2019; IOP Publishing
• Subjects: Accretion disks; accretion, accretion disks; Ambipolar diffusion; Astrophysics; Computational fluid dynamics; Computer simulation; Diffusion; Fluid flow; Gas temperature; Hall effect; Heating; Ionization; Irradiation; Joule heating; Magnetic fields; Magnetohydrodynamic turbulence; Magnetohydrodynamics; magnetohydrodynamics (MHD); methods: numerical; Ohmic dissipation; Planet formation; planets and satellites: formation; Protoplanetary disks; Protoplanets; Resistance heating; Rotating disks; Stellar winds; Temperature profiles; Temperature structure

The gas temperature in protoplanetary disks (PPDs) is determined by a combination of irradiation heating and accretion heating, with the latter conventionally attributed to turbulent dissipation. However, recent studies have suggested that the inner disk (a few au) is largely laminar, with accretion...