132 citations · 306 across the 67 of their papers we have counts for
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On a star with expanding isotropic fluid
Hristu Culetu
The generalized Gullstrand-Painleve geometry is investigated for expanding matter. Compared to other studies, we take into account an anisotropic stress tensor as the source of cur…
On a star with static conformally flat geometry inside
Hristu Culetu
The properties of a star with constant positive energy density inside (as for the Schwarzschild interior geometry) and a negative pressure are investigated, using a static conforma…
Semiclassical corrections to a regularized Schwarzschild metric
Hristu Culetu
A regular form of the Schwarzschild geometry is proposed. It is more suitable for application in microphysics because the source mass comes out both as a Schwarzschild radius and t…
On geodesics in spherical Rindler space
Hristu Culetu
The geodesics in various spherical Rindler frames are investigated. A display of some kinematical quantities of the spacetime is given. The constant acceleration from the metric ac…
A regular version of the extremal RN spacetime
Hristu Culetu
A modified extremal Reissner-Nordstrom geometry, void of singularities, is proposed in this work, by means of an exponential factor depending on a positive constant . All the me…
A Vaidya-type spacetime with no singularities
Hristu Culetu
A regular Vaidya-type line-element is proposed in this work. The mass function depends both on the temporal and the spatial coordinates. The curvature invariants and the source str…