3 citations · 5 across the 6 of their papers we have counts for
8 papers
Constraints on dark energy from the observed density fluctuations spectrum and supernova data
Reuven Opher, Ana Pelinson
One of the greatest challenges in cosmology today is to determine the nature of dark energy, the source of the observed present acceleration of the universe. High precision experim…
A New Method for Studying the Topology of the Universe from the Cosmic Microwave Background
Reuven Opher
The standard method for observationally confirming the existence of a predicted finite topology of the universe involves searching for the repetition of the same finite or extended…
Problems with studying topology of the universe via circles from cosmic microwave background data
Evelise Gausmann, Reuven Opher
This paper has been withdrawn by the authors for future revision.
Origin of coherent magnetic fields in high redshift objects
A. Kandus, R. Opher, S. R. M. Barros
Large scale strong magnetic fields in galaxies are generally thought to have been generated by a mean field dynamo. In order to have generated the fields observed, the dynamo would…
Ten Major Challenges in Cosmology
Reuven Opher
What are the important unanswered questions in cosmology? The choice as to which are the most important is somewhat personal. In the view of the author, the ten topics chosen here…
Casimir energy in finite expanding universes: a prelude
Sandro Silva e Costa, Reuven Opher
We present the Green's functions that are the solutions of the massive Klein-Gordon equation for a scalar field with non-minimal coupling to gravitation for several static and expa…