arXiv subjects

A. W. Zaharow

Publications and source records attributed to A. W. Zaharow.

2 recordsLinked to original sources

arXiv2007

Possible origin of Larson's lows

It was found that approximately constant column densities of giant molecular clouds (Larson's low) can be explained as cloud existence condition in external (galactic) gravitational field. This condition can be also applied to objects (clumps and cores) embedded into the cloud and its gravitational field. Derived existence condition do not rely on any internal dynamic of a cloud and embedded objects.

astro-ph↗

arXiv2006

Gravitational stability of finite massive bodies

Jeans instability of finite massive bodies at hydrostatic equilibrium is studied. Differential equation governing the evolution of infinitesimal disturbances is derived. We take into account radial inhomogeneity of mass density and other fluid parameters at the equilibrium state. Dispersion relation and a simple analytical formula, generalizing the Jeans criterion of instability, are derived.

astro-ph↗