38 citations · 113 across the 6 of their papers we have counts for
6 papers
Large scale vector modes and the first CMB temperature multipoles
J. A. Morales, D. Sáez
Recent observations have pointed out various anomalies in some multipoles (small ) of the cosmic microwave background (CMB). In this paper, it is proved that some of these a…
On Newtonian frames
Bartolomé Coll, Joan Josep Ferrando, Juan Antonio Morales
In Newtonian space-time there exist four, and only four, causal classes of frames. Natural frames allow to extend this result to coordinate systems, so that coordinate systems may…
Creatable Universes
Joan Josep Ferrando, Ramon Lapiedra, Juan Antonio Morales
We consider the question of properly defining energy and momenta for non asymptotic Minkowskian spaces in general relativity. Only spaces of this type, whose energy, linear 3-momen…
Evolution of polarization orientations in a flat universe with vector perturbations: CMB and quasistellar objects
Juan Antonio Morales, Diego Sáez
Various effects produced by vector perturbations (vortical peculiar velocity fields) of a flat Friedmann-Robertson-Walker background are considered. In the presence of this type of…
Positioning with stationary emitters in a two-dimensional space-time
Bartolomé Coll, Joan Josep Ferrando, Juan Antonio Morales
The basic elements of the relativistic positioning systems in a two-dimensional space-time have been introduced in a previous work [Phys. Rev. D {\bf 73}, 084017 (2006)] where geod…
Two-dimensional approach to relativistic positioning systems
Bartolomé Coll, Joan Josep Ferrando, Juan Antonio Morales
A relativistic positioning system is a physical realization of a coordinate system consisting in four clocks in arbitrary motion broadcasting their proper times. The basic elements…