51 citations · 195 across the 23 of their papers we have counts for
24 papers
Generalized Inheritance
J. P. Krisch, E. N. Glass
Generalized inheritance is used with the almost-conformal Killing equation. Examples are the flat FRW, Kasner, and deSitter metrics. The volume changes in FRW while transitioning t…
Relativistic Bessel Cylinders
J. P. Krisch, E. N. Glass
A set of cylindrical solutions to Einstein's field equations for power law densities is described. The solutions have a Bessel function contribution to the metric. For matter cylin…
Incompressible Stars and Fractional Derivatives
S. S. Bayin, J. P. Krisch
Fractional calculus is an effective tool in incorporating the effects of non-locality and memory into physical models. In this regard, successful applications exist rang- ing from…
Two Fluid Shear-Free Composites
J. P. Krisch, E. N. Glass
Shear-free composite fluids are constructed from two Letelier rotated unaligned perfect fluids. The component fluid parameters necessary to construct a shear-free composite are inv…
Velocity and Heat Flow in a Composite Two Fluid System
J. P. Krisch, E. N. Glass
We describe the stress energy of a fluid with two unequal stresses and heat flow in terms of two perfect fluid components. The description is in terms of the fluid velocity overlap…
Levi-Civita cylinders with fractional angular deficit
J. P. Krisch, E. N. Glass
The angular deficit factor in the Levi-Civita vacuum metric has been parametrized using a Riemann-Liouville fractional integral. This introduces a new parameter into the general re…