Accretion onto Stars in the Disks of Active Galactic Nuclei

Abstract

Disks of gas accreting onto supermassive black holes are thought to power active galactic nuclei (AGN). Stars may form in gravitationally unstable regions of these disks, or may be captured from nuclear star clusters. Because of the dense gas environment, the evolution of such embedded stars can diverge dramatically from those in the interstellar medium. This work extends previous studies of stellar evolution in AGN disks by exploring a variety of ways that accretion onto stars in AGN disks may differ from Bondi accretion. We find that tidal effects from the supermassive black hole significantly alter the evolution of stars in AGN disks, and that our results do not depend critically on assumptions about radiative feedback on the accretion stream. Thus, in addition to depending on $\rho /c_s^3$, the fate of stars in AGN disks depends sensitively on the distance to and mass of the supermassive black hole. This affects where in the disk stellar explosions occur, where compact remnants form and potentially merge to produce gravitational waves, and where different types of chemical enrichment take place.

17 pages, 10 figures, accepted for publication in ApJ

References in corpus (35)

• The NumPy array: a structure for efficient numerical computation
• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• Giant Gamma-ray Bubbles from Fermi-LAT: AGN Activity or Bipolar Galactic Wind?
• Modeling the Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk
• The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
• Accretion disc viscosity: how big is alpha?
• Updated Electron-Conduction Opacities: The Impact on Low-Mass Stellar Models
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• Quasar Accretion Disks Are Strongly Inhomogeneous
• Coulomb tunneling for fusion reactions in dense matter: Path integral Monte Carlo versus mean field
• The Migration of Gap-Opening Planets is not Locked to Viscous Disk Evolution
• Migration of massive planets in accreting disks
• The Progenitor Dependence of the Preexplosion Neutrino Emission in Core-Collapse Supernovae
• Formation of a disc gap induced by a planet: Effect of the deviation from Keplerian disc rotation
• Black hole, neutron star and white dwarf merger rates in AGN disks
• Stellar Evolution in AGN Disks
• Twelve years of spectroscopic monitoring in the Galactic Center: the closest look at S-stars near the black hole
• Understanding extreme quasar optical variability with CRTS: I. Major AGN flares
• Evolution of gas disc-embedded intermediate mass ratio inspirals in the LISA band
• On the nature of the fast moving star S2 in the Galactic Center
• Radiation Feedback in ULIRGS: Are Photons Movers and Shakers?
• Star Formation in Accretion Disks and SMBH Growth
• Electromagnetic Signatures of Relativistic Explosions in AGN Disks
• The large-scale ionization cones in the Galaxy
• Stellar Evolution in the Disks of Active Galactic Nuclei Produces Rapidly Rotating Massive Stars
• Opacity Driven Convection and Variability in Accretion Disks around Supermassive Black Holes
• A Sample of Quasars with Strong Nitrogen Emission Lines from the Sloan Digital Sky Survey
• Making massive stars in the Galactic Centre via accretion onto low-mass stars within an accretion disc
• How Consumption and Repulsion Set Planetary Gap Depths and the Final Masses of Gas Giants
• Accretion of Gas Giants Constrained by the Tidal Barrier
• Local Simulations of Heating Torques on a Luminous Body in an Accretion Disk
• The Effect of a Time-Varying Accretion Disk Size on Quasar Microlensing Light Curves
• Disks as Inhomogeneous, Anisotropic Gaussian Random Fields
• Supernova Explosions in Accretion Disks in Active Galactic Nuclei: Three-Dimensional Models

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• Can stellar-mass black hole growth disrupt disks of active galactic nuclei? The role of mechanical feedback
• Feedback-Dominated Accretion Flows
• "Super-Kilonovae" from Massive Collapsars as Signatures of Black-Hole Birth in the Pair-instability Mass Gap
• Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
• The Role of Outflow Feedback on Accretion of Compact Objects in Accretion Disk of Active Galactic Nuclei
• Micro Tidal Disruption Events in Active Galactic Nuclei
• Eccentric Mergers in AGN Discs: Influence of the Supermassive Black-Hole on Three-body Interactions
• In-situ star formation in accretion disk and explanation for correlation between black hole mass and metallicity in AGNs
• GRB 191019A: a short gamma-ray burst in disguise from the disk of an active galactic nucleus
• The emergence of diffused Gamma-Ray Burst afterglows from the disks of Active Galactic Nuclei
• Prompt Emission of Gamma-Ray Bursts in the High-density Environment of Active Galactic Nuclei Accretion Disks
• Mapping the Outcomes of Stellar Evolution in the Disks of Active Galactic Nuclei
• Accretion-modified stellar-mass black hole distribution and milli-Hz gravitational wave backgrounds from galaxy centre
• Constraints on the Galactic Centre environment from Gaia hypervelocity stars II: The evolved population
• On the Terminal Spins of Accreting Stars and Planets: Boundary Layers
• The effects of Time-Variable Absorption due to Gamma-Ray Bursts In Active Galactic Nuclei Accretion Disks
• Propagation of GRB Relativistic Jets in AGN Disks and Its Implication for GRB Detection
• 3D Adiabatic Simulations of Binary Black Hole Formation in AGN
• The Influence of Disk Composition on the Evolution of Stars in the Disks of Active Galactic Nuclei
• High-energy Neutrino Productions from AGN Disk Transients Impacted by Circum-disk Medium
• In the grip of the disk: dragging the companion through an AGN
• The Multiband Emission of the two-component Gamma-Ray Burst jet influenced by progenitor winds within the Accretion Disk of Active Galactic Nuclei
• Dating N loud AGNs at high redshift: GS3073 as a snapshot of wCen like evolution of a nuclear star cluster
• Where to find over-massive brown dwarfs: new benchmark systems for binary evolution
• Population Synthesis of Gravitational Wave Sources
• Top-heavy stellar mass distribution in galactic nuclei inferred from the universally high abundance ratio of [Fe/Mg]
• Effects of an Immortal Stellar Population in AGN Disks