Broad compensated primordial CDM curvature peaks collapse directly into 10^3 to 10^6 solar mass black hole seeds at redshifts greater than 5, as modeled with LTB and Szekeres solutions.
Covariant Fluid Dynamics: a Long Wave-Length Approximation
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
In this paper we consider the Long-Wavelength Approximation Scheme (LWAS) in the framework of the covariant fluid approach to general relativistic dynamics, specializing to the particular case of irrotational dust matter. We discuss the dynamics of these models during the approach to any spacelike singularity where a BKL-type evolution is expected, studying the validity of this approximation scheme and the role of the magnetic part of the Weyl tensor, $H_{ab}$. Our analytic results confirm a previous numerical analysis: it is $H_{ab}$ that destroys the pure Kasner-like approach to the singularity and eventually produces the bounce to another Kasner phase. Expanding regions evolve as separate universes where inhomogeneities and anisotropies die away.
fields
gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
citing papers explorer
-
Supermassive black hole seeds from direct collapse of CDM-curvature peaks
Broad compensated primordial CDM curvature peaks collapse directly into 10^3 to 10^6 solar mass black hole seeds at redshifts greater than 5, as modeled with LTB and Szekeres solutions.