38 citations · 106 across the 6 of their papers we have counts for
6 papers
Quasi--hyperbolically symmetric -metric
L. Herrera, A. Di Prisco, J. Ospino +1
We carry out a systematic study on the motion of test particles in the region inner to the naked singularity of a quasi--hyperbolically symmetric -metric. The geodesic equations…
Vorticity and entropy production in tilted Szekeres spacetimes
L. Herrera, A. Di Prisco, J. Ibañez +1
We analyze the properties of the tilted Szekeres spacetime, i.e. the version of such spacetime as seen by a congruence of observers with respect to which the fluid is moving. The i…
Why does gravitational radiation produce vorticity?
L. Herrera, W. Barreto, J. Carot +1
We calculate the vorticity of world--lines of observers at rest in a Bondi--Sachs frame, produced by gravitational radiation, in a general Sachs metric. We claim that such an effec…
Energetics of the Einstein-Rosen spacetime
L. Herrera, A. Di Prisco, J. Carot +1
A study covering some aspects of the Einstein--Rosen metric is presented. The electric and magnetic parts of the Weyl tensor are calculated. It is shown that there are no purely ma…
Stuffed Black Holes
A. Arbona, C. Bona, J. Carot +3
Initial data corresponding to spacetimes containing black holes are considered in the time symmetric case. The solutions are obtained by matching across the apparent horizon differ…
Comment on Ricci Collineations of Static Spherically Symmetric Spacetimes
R. Bertolotti, G. Contreras, L. A. Núñez +2
We present a counter example to a theorem given by Amir {\em et al.} J. Math. Phys. {\bf 35}, 3005 (1994). We also comment on a misleading statements of the same reference.