Radiative effects during the assembly of direct collapse black holes

Abstract

We perform a post-processing radiative feedback analysis on a 3D ab initio cosmological simulation of an atomic cooling halo under the direct collapse black hole (DCBH) scenario. We maintain the spatial resolution of the simulation by incorporating native ray-tracing on unstructured mesh data, including Monte Carlo Lyman-alpha (Lyα) radiative transfer. DCBHs are born in gas-rich, metal-poor environments with the possibility of Compton-thick conditions, $N_H\gtrsim 10^{24}{\mathrm{cm}}^{-2}$. Therefore, the surrounding gas is capable of experiencing the full impact of the bottled-up radiation pressure. In particular, we find that multiple scattering of Lyα photons provides an important source of mechanical feedback after the gas in the sub-parsec region becomes partially ionized, avoiding the bottleneck of destruction via the two-photon emission mechanism. We provide detailed discussion of the simulation environment, expansion of the ionization front, emission and escape of Lyα radiation, and Compton scattering. A sink particle prescription allows us to extract approximate limits on the post-formation evolution of the radiative feedback. Fully coupled Lyα radiation hydrodynamics will be crucial to consider in future DCBH simulations.

12 pages, 11 figures, MNRAS, in press

References in corpus (15)

• A luminous quasar at a redshift of z = 7.085
• Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• Supermassive black hole formation during the assembly of pre-galactic discs
• Formation of z ~ 6 quasars from hierarchical galaxy mergers
• Lyman Alpha Emitting Galaxies as a Probe of Reionization
• The Formation of the First Stars II. Radiative Feedback Processes and Implications for the Initial Mass Function
• Resolving the Formation of Protogalaxies. II. Central Gravitational Collapse
• Identification of the brightest Lyα emitters at z=6.6: implications for the evolution of the luminosity function in the re-ionisation era
• Formation of massive protostars in atomic cooling haloes
• The Lyman-alpha signature of the first galaxies
• Revised rate coefficients for H${}_2$ and H${}^{-}$ destruction by realistic stellar spectra
• Lyman Alpha Driven Outflows Around Star Forming Galaxies
• Lyman-alpha radiation hydrodynamics of galactic winds before cosmic reionization
• The impact of gas bulk rotation on the lyman-alpha line

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• Finding Direct-Collapse Black Holes at Birth
• On the Detection of Supermassive Primordial Stars. II. Blue Supergiants
• Lyman-$\alpha$ feedback prevails at Cosmic Dawn: Implications for the first galaxies, stars, and star clusters
• Lyman-alpha radiation pressure: an analytical exploration