arXiv subjects

Z. Golda

Publications and source records attributed to Z. Golda.

2 recordsLinked to original sources

arXiv2004

Magnetic amplification in cylindrical cosmological structure

We derive the amplification of the cosmological magnetic field associated with forming gravitational structure. The self-similar solutions of magnetohydrodynamic equations are computed both in linear and nonlinear regimes. We find that the relatively fast magnetic field enhancement becomes substantial in the nonlinear phase.

astro-ph↗

arXiv2001

Anomalous dispersion of density waves in the early universe with positive cosmological constant

Density perturbations in the flat (K=0) Robertson-Walker universe with radiation ($p=ε/3$) and positive cosmological constant ($Λ>0$) are investigated. The phenomenon of anomalous dispersion of acoustic waves on $Λ$ is discussed.

gr-qc↗