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A faraway quasar in the direction of the highest energy Auger event
(IOP PUBLISHING LTD, 2010)
The highest energy cosmic ray event reported by the Auger Observatory has an energy of 148 EeV. It does not correlate with any nearby (z<0.024) object capable of originating such a high energy event. Intrigued by the fact ...
Straight spinning cosmic strings in Brans-Dicke gravity
(2018-03-21)
An exact solution of straight spinning cosmic strings in Brans-Dicke theory of gravitation is presented. The possibility of the existence of closed time-like curves around these cosmic strings is analyzed. Furthermore, the ...
Stability, causality, and quasinormal modes of cosmic strings and cylinders
(AMER PHYSICAL SOC, 2010)
In this work we consider the evolution of a massive scalar field in cylindrically symmetric space-times. Quasinormal modes have been calculated for static and rotating cosmic cylinders. We found unstable modes in some ...
The ALMA Spectroscopic Survey in the HUDF: CO Luminosity Functions and the Molecular Gas Content of Galaxies through Cosmic History
(2019)
We use the results from the ALMA large program ASPECS, the spectroscopic survey in the Hubble Ultra Deep Field (HUDF), to constrain CO luminosity functions of galaxies and the resulting redshift evolution of rho(H-2). The ...
The large numbers hypothesis and quantum mechanics
(1998)
In this paper, the suggested similarity between micro and macrocosmos is extended to quantum behavior, postulating that quantum mechanics, like general relativity and classical electrodynamics, is invariant under discrete ...
Gamma-ray bursts and the relevance of rotation-induced neutrino sterilization
(Elsevier Science BvAmsterdamHolanda, 2013)
Quantum fields as Cosmic Censors in (2+1)-dimensions
(2018)
We discuss the effect of quantum fields on classical background spacetimes which contain timelike singularities. We do so for the case that the background is a (2+1)-dimensional BTZ spacetime, whether corresponding to a ...
The magnetic field of a current carrying cosmic string
(1997-09-01)
The magnetostatic field of an infinite rectilinear current placed in the stationary gravitational field of a rotating cosmic string is found. An interesting aspect of this problem is that although the metric is mathematically ...
The magnetic field of a current carrying cosmic string
(1997-09-01)
The magnetostatic field of an infinite rectilinear current placed in the stationary gravitational field of a rotating cosmic string is found. An interesting aspect of this problem is that although the metric is mathematically ...