Results 251 to 260 of about 14,844 (293)

Evolution of Cosmic Strings

Physical Review Letters, 1985
Results of numerical simulations of the evolution of a network of interacting cosmic strings in an expanding universe are presented and compared with a simple model. The results lend weight to earlier speculations about the evolution of cosmic strings.
Anna Albrecht
exaly   +3 more sources

Cosmic Evolution

Publications of the Astronomical Society of the Pacific, 2001
Conference was held in Paris, France, in 2000 November. Proceedings will be edited by Roger Ferlet, Martin Lemoine, and Elisabeth Vangioni-Flam and published by World Scientific.
Vangioni-Flam, Elisabeth, Cassé, Michel
  +4 more sources

Cosmic-string evolution

Physical Review Letters, 1989
We summarize the results of high-resolution simulations of cosmic-string evolution in an expanding universe. The string network is found to relax to a scaling solution in accordance with Kibble's one-scale model.'' However, the long strings are found to have significant structure on scales much smaller than the scale length of the long-string network ...
, Bennett, , Bouchet
openaire   +2 more sources

Evolution of cosmic networks

Physical Review D, 1987
The cosmological evolution of three-dimensional networks of monopoles connected by strings is studied both numerically and analytically. We find that the networks evolve in a self-similar fashion. Monopoles and antimonopoles annihilate, creating larger and larger gaps in the network, so that the typical scale of the network grows proportionally to time.
, Vachaspati, , Vilenkin
openaire   +2 more sources

Cosmic evolution of nontopological solitons

Physical Review D, 1989
Nontopological solitons are stable field configurations which may be formed in a primordial phase transition. We study their cosmic evolution and examine the possibility that such objects could contribute significantly to the energy density of the Universe.
, Frieman, , Olinto, , Gleiser, , Alcock
openaire   +2 more sources

Evolution of the cosmic density matrix

Physical Review D, 1989
The dynamics of a reduced cosmic density matrix for minisuperspace is derived by projecting out inhomogeneous modes. This projection procedure roughly represents the intrinsic loss of information beyond the horizon of the local observer. Even if the wave function of the whole Universe exists, it will be unobservable and therefore should be projected ...
openaire   +2 more sources

GALAXY EVOLUTION THROUGH THE COSMIC TIME

International Journal of Modern Physics D, 2010
Elliptical galaxies are the best systems to study the early star formation activity in the universe. This work aims to understand the formation and evolution of these objects through the study of the integrated properties of their stellar populations.
Idiart, T.P., de Freitas Pacheco, J.A., Silk, J.   +2 more
openaire   +2 more sources

The Cosmic Evolution Survey–COSMOS

2008
The Cosmic Evolution Survey (COSMOS) is designed to probe the correlated evolution of galaxies, star formation, active galactic nuclei (AGN) and dark matter (DM) with large-scale structure (LSS) over the redshift range z >0.5 to 3. The survey includes multi-wavelength imaging and spectroscopy from X-ray to radio wavelengths covering a 2 square ...
openaire   +2 more sources

Evolution of superconducting cosmic loops

Physical Review D, 1989
The evolution of superconducting cosmic loops is studied numerically. The back reaction of the electromagnetic radiation on the string and the current is considered. It is shown that the infinitely thin string does not lead to a ''renormalizable'' back reaction, contrary to the case of a pointlike charge.
openaire   +2 more sources

How cosmic rays mediate the evolution of the interstellar medium

Monthly Notices of the Royal Astronomical Society, 2023
Simon Glover, Christine Simpson, Rowan Smith   +2 more
exaly