Variability of the inner dead zone edge in 2D radiation hydrodynamic simulations

Abstract

The inner regions of protoplanetary disks are prone to thermal instability (TI), which can significantly impact the thermal and dynamic evolution of planet-forming regions. Observable as episodic accretion outbursts, such periodic disturbances shape the disk's vertical and radial structure. We investigate the stability of the inner disk edge around a Class II T Tauri star and analyse the consequences of TI on the inner disk's evolution in both the vertical and radial dimensions. A particular focus is laid on the emergence and destruction of solid-trapping pressure maxima. Our 2D axisymmetric radiation hydrodynamic models include the transition to the dead zone from a highly turbulent inner disk, heating by both stellar irradiation and viscous dissipation, vertical and radial radiative transport and an adaptive dust-to-gas mass ratio. The simulated time frames include both the TI- and quiescent phases. We track the TI on S-curves of thermal stability. The TI in our models can develop in disks with moderate accretion rates and results from the activation of the magnetorotational instability (MRI) in the dead zone. The TI creates an extensive MRI active region around the midplane and disrupts the stable pebble- and migration trap at the inner edge of the dead zone. Our simulations consistently show the occurrence of TI-reflares, which, together with the initial TI, produce pressure maxima in the inner disk within 1 AU, possibly providing favourable conditions for streaming instability. On a timescale of a few thousand years, TI regularly disrupts the disk's radial and vertical structure within 1 AU. While several pressure maxima are created, stable migration traps are destroyed and reinstated after the TI phase. Our models provide a foundation for more detailed investigations into phenomena such as short-term variability of accretion rates.

20 pages, 15 figures, accepted for publication in A&A

References in corpus (66)

• PLUTO: a Numerical Code for Computational Astrophysics
• The disc instability model of dwarf-novae and low-mass X-ray binary transients
• Using FU Orionis Outbursts to Constrain Self-Regulated Protostellar Disk Models
• Wind-driven Accretion in Protoplanetary Disks. I: Suppression of the Magnetorotational Instability and Launching of the Magnetocentrifugal Wind
• X-Shooter spectroscopy of young stellar objects in Lupus: Accretion properties of class II and transitional objects
• Forming the cores of giant planets from the radial pebble flux in protoplanetary discs
• The Magnetic Fields of Classical T Tauri Stars
• The Burst Mode of Protostellar Accretion
• The California-Kepler Survey. IV. Metal-rich Stars Host a Greater Diversity of Planets
• The Mass and Size Distribution of Planetesimals Formed by the Streaming Instability. I. The Role of Self-Gravity
• A stellar-mass-dependent drop in planet occurrence rates
• Concentrating small particles in protoplanetary disks through the streaming instability
• Non-steady Accretion in Protostars
• The Exoplanet Population Observation Simulator. I - The Inner Edges of Planetary Systems
• Inside-Out Planet Formation
• The Shape of the Inner Rim in Proto-Planetary Disks
• Radiation-Dominated Disks Are Thermally Stable
• X-Shooter study of accretion in Chamaeleon I: II. A steeper increase of accretion with stellar mass for very low mass stars?
• 2-D simulations of FU Orionis disk outbursts
• Long-term Evolution of Protostellar and Protoplanetary Disks. I. Outbursts
• Radiation Hydrodynamical Turbulence In Protoplanetary Disks: Numerical Models and Observational Constraints
• High-Temperature Ionization in Protoplanetary Disks
• The Inner Rim Structures of Protoplanetary Discs
• Magnetized Accretion and Dead Zones in Protostellar Disks
• Accretion Outbursts in Self-gravitating Protoplanetary Disks
• 3D Radiation Non-ideal Magnetohydrodynamical Simulations Of The Inner Rim In Protoplanetary Disks
• The initial conditions for planet formation: Turbulence driven by hydrodynamical instabilities in disks around young stars
• The Gravo-Magneto Limit Cycle in Accretion Disks
• Accretion, Outflows, and Winds of Magnetized Stars
• Radiation hydrodynamical models of the inner rim in protoplanetary disks
• Radiation Magnetohydrodynamics In Global Simulations Of Protoplanetary Disks
• Planet formation and migration near the silicate sublimation front in protoplanetary disks
• How dust fragmentation may be beneficial to planetary growth by pebble accretion
• Properties of Strong and Weak Propellers from MHD Simulations
• Requirements for gravitational collapse in planetesimal formation --- the impact of scales set by Kelvin-Helmholtz and nonlinear streaming instability
• Dust and gas density evolution at a radial pressure bump in protoplanetary disks
• Mean gas opacity for circumstellar environments and equilibrium temperature degeneracy
• The chemistry of episodic accretion in embedded objects. 2D radiation thermo-chemical models of the post-burst phase
• KMOS study of the mass accretion rate from Class I to Class II in NGC 1333
• Origin of Weak Turbulence in the Outer Regions of Protoplanetary Disks
• Dwarf Nova Outbursts with Magnetorotational Turbulence
• Variable Accretion Outbursts in Protostellar Evolution
• Multi-wavelength study of the low-luminosity outbursting young star HBC 722
• Terrestrial planet formation by torque-driven convergent migration of planetary embryos
• MRI-active inner regions of protoplanetary discs. I. A detailed model of disc structure
• Diagnosing FUor-like Sources: The Parameter Space of Viscously Heated Disks in the Optical and Near-IR
• Evolution of dust in protoplanetary disks of eruptive stars
• Thermodynamics of the dead-zone inner edge in protoplanetary disks
• Turbulence in outer protoplanetary disks: MRI or VSI?
• Inside-Out Planet Formation. V. Structure of the Inner Disk as Implied by the MRI
• Impact of Local Pressure Enhancements on Dust Concentration inTurbulent Protoplanetary Discs
• Observational signatures of outbursting protostars - I: From hydrodynamic simulations to observations
• Magnetically-activated accretion outbursts of pre-main sequence discs
• Analytic Expressions for the Inner-Rim Structure of Passively Heated Protoplanetary Disks
• Establishing Dust Rings and Forming Planets Within Them
• Dust Accumulation near the Magnetospheric Truncation of Protoplanetary Discs around T Tauri Stars
• Time-dependent, long-term hydrodynamic simulations of the inner protoplanetary disk I: The importance of stellar magnetic torques
• Two-dimensional models of layered protoplanetary discs - II. The effect of a residual viscosity in the dead zone
• Thermal processing of primordial pebbles in evolving protoplanetary disks
• Streaming instability in a global patch simulation of protoplanetary disks
• Primordial Dusty Rings and Episodic Outbursts in Protoplanetary Discs
• Trapping (sub-)Neptunes similar to TOI-216b at the inner disk rim: Implications for the disk viscosity and the Neptunian desert
• Growth after the streaming instability: The radial distance dependence of the planetary growth
• Filling in the Gaps: Can Gravitationally Unstable Discs Form the Seeds of Gas Giant Planets?
• The impact of accretion heating and thermal conduction on the dead zone of protoplanetary disks
• Time-dependent long-term hydrodynamic simulations of the inner protoplanetary disk III: The influence of photoevaporation

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