Origin of supermassive black holes in massive metal-poor protoclusters

DRG Schleicher, B Reinoso, M Latif… - Monthly Notices of …, 2022 - academic.oup.com
While large numbers of supermassive black holes have been detected at z> 6, their origin is
still essentially unclear. Numerical simulations have shown that the conditions for the …

Magnetic field amplification in accretion discs around the first stars: implications for the primordial IMF

P Sharda, C Federrath, MR Krumholz… - Monthly Notices of …, 2021 - academic.oup.com
Magnetic fields play an important role in the dynamics of present-day molecular clouds.
Recent work has shown that magnetic fields are equally important for primordial clouds …

Magnetic braking during direct collapse black hole formation

MA Latif, DRG Schleicher - The Astrophysical Journal Letters, 2023 - iopscience.iop.org
Magnetic fields are expected to be efficiently amplified during the formation of the first
massive black holes via the small-scale dynamo and in the presence of strong accretion …

Simulations and observational tests of primordial magnetic fields from Cosmic Microwave Background constraints

F Vazza, D Paoletti, S Banfi, F Finelli… - Monthly Notices of …, 2021 - academic.oup.com
We present the first cosmological simulations of primordial magnetic fields derived from the
constraints by the Cosmic Microwave Background observations, based on the fields' …

Magnetic field amplification in massive primordial halos-Influence of Lyman-Werner radiation

VB Díaz, DRG Schleicher, MA Latif, P Grete… - Astronomy & …, 2024 - aanda.org
Context. The potential importance of magnetic fields during structure formation and
gravitational collapse in the early Universe has been shown in several studies. In particular …

Role of magnetic fields in the formation of direct collapse black holes

MA Latif, DRG Schleicher… - The Astrophysical …, 2023 - iopscience.iop.org
Direct collapse black holes are the leading candidates for the origin of the first supermassive
black holes. However, the role of magnetic fields during their formation is still unclear as …

The physical origin of supercompetitive accretion during the formation of the first supermassive black holes

DRG Schleicher, B Reinoso… - Monthly Notices of the …, 2023 - academic.oup.com
Numerical simulations have shown the occurrence of a scenario termed 'supercompetitive
accretion', a term that describes a situation where only the central few objects grow …

Supermassive Star Formation in Magnetized Atomic-cooling Gas Clouds: Enhanced Accretion, Intermittent Fragmentation, and Continuous Mergers

S Hirano, MN Machida, S Basu - The Astrophysical Journal, 2021 - iopscience.iop.org
The origin of supermassive black holes (with≳ 10 9 M⊙) in the early universe (redshift z∼
7) remains poorly understood. Gravitational collapse of a massive primordial gas cloud is a …

Gravitational collapse at low to moderate Mach numbers: The relationship between star formation efficiency and the fraction of mass in the massive object

J Saavedra-Bastidas, DRG Schleicher… - arXiv preprint arXiv …, 2024 - aanda.org
The formation of massive objects via gravitational collapse is relevant both for explaining the
origin of the first supermassive black holes and in the context of massive star formation …

Turbulence in the intragroup and circumgalactic medium

W Schmidt, JP Schmidt, P Grete - Astronomy & Astrophysics, 2021 - aanda.org
Context. In massive objects, such as galaxy clusters, the turbulent velocity dispersion, σ turb,
is tightly correlated to both the object mass, M, and the thermal energy. Aims. Here, we …