Topic
Particle horizon
About: Particle horizon is a research topic. Over the lifetime, 2096 publications have been published within this topic receiving 69137 citations.
Papers published on a yearly basis
Papers
More filters
Posted Content•
TL;DR: In this paper, the authors derived an alternative derivation connecting the temperature of the cosmic background radiation and the age of the universe which is found to be similar to the one obtained by Gamow long back.
Abstract: The quantum mechanical approach developed by us recently for the evolution of the universe is used to derive an alternative derivation connecting the temperature of the cosmic background radiation and the age of the universe which is found to be similar to the one obtained by Gamow long back By assuming the age of the universe to be $\approx$ 20 billion years, we reproduce a value of $\approx$ 291 K for the cosmic back-ground radiation, agreeing well with the recently measured experimental value of 2728 K Besides, this theory enables us to calculate the photon density and entropy associated with the background radiation and the ratio of the number of photons to the number of nucleons, which quantitatively agree with the results obtained by others
Book•
16 Jul 2014
TL;DR: A Thesis Submitted In Partial Fulfillment Of The Requirements For The Degree Of Master Of Science In Physics as mentioned in this paper was submitted in partial fulfilment of the requirements for the degree of master of science in physics.
Abstract: A Thesis Submitted In Partial Fulfillment Of The Requirements For The Degree Of Master Of Science In Physics
01 Oct 2014
TL;DR: The aim of this work is to stress the importance of some image processing and statistical approaches on this field, including multi-resolution, Bayesian inference and image filtering, to determine the galaxy redshift distribution, to constrain primordial non-Gaussianity, or to explore anisotropic models of the Universe.
Abstract: The recent success of the Planck mission has consolidated the ΛCDM cosmological model as the standard paradigm for describing the origin, evolution and fate of the Universe. However, there are still relevant questions to be answered: which is the specific mechanism responsible of the cosmic inflation? which particle or particles are responsible for the dark matter? is the current accelerated expansion of the universe caused by a vacuum energy or a dynamic fluid? Many of these questions will be explored by the future generation of galaxy surveys, which will map the large-scale structure of the Universe. However, before that, interesting insights can be obtained from current data sets. The aim of this work is to stress the importance of some image processing and statistical approaches on this field, including multi-resolution, Bayesian inference and image filtering. It reviews some recent contributions to determine the galaxy redshift distribution, to constrain primordial non-Gaussianity, or to explore anisotropic models of the Universe, among others.
TL;DR: In this paper, a Tolman-like scenario is described in which due to the direct coupling of electromagnetic fields to space-time curvature, the total number of photons comprised in the universe at a given epoch changes as the universe expands.
Abstract: A Tolman-like Scenario is described in which due to the direct coupling of electromagnetic fields to space-time curvature, the total number of photons comprised in the universe at a given epoch changes as the Universe expands
01 Jan 1968
TL;DR: In this article, the authors examined the amount of knowledge we can have about states of objects at other places and temporal instants and the degree of its reliability, and how we can reach a conclusion about the size and geometry of our universe.
Abstract: IN Chapter 6 we considered what it meant to say of Space that it had a certain geometry, was finite or infinite and, if finite, had a certain volume. In Chapter 9 and in the last two chapters we have examined the amount of knowledge we can have about states of objects at other places and temporal instants and the degree of its reliability. We are now in a position to examine how we can reach a conclusion about the size and geometry of our Universe.