2 papers
astro-ph.CO2026
A semi-analytical approach to cosmic void evolution
A. N. Baushev, A. G. Nikiforov, M. V. Barkov
We present a theoretical study of the non-linear evolution of cosmic voids -- underdense regions that occupy a large fraction of the observable Universe. We model a void as an isol…
gr-qc2025
The impact of the eccentricity on the collapse of an ellipsoid into a black hole
A. G. Nikiforov, A. N. Baushev, M. V. Barkov
We consider the gravitational collapse of a homogeneous pressureless ellipsoid. We have shown that the minimal size that the ellipsoid can reach during collapse depends on its…