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相关论文: Relativistic Universe Scenario

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The atmosphere is an intrinsic part of any ground based Cherenkov gamma-ray telescope, and the telescope response is therefore sensitive to unpredictable changes in the atmospheric transparency which are difficult to measure and interpret…

天体物理学 · 物理学 2009-11-07 S. LeBohec , J. Holder

We use cosmography to present constraints on the kinematics of the Universe without postulating any underlying theoretical model a priori. To this end, we use a Markov Chain Monte Carlo analysis to perform comparisons to the supernova Ia…

宇宙学与河外天体物理 · 物理学 2013-01-18 Alejandro Aviles , Christine Gruber , Orlando Luongo , Hernando Quevedo

The general aim of this work is to obtain the lateral distribution of atmospheric Cherenkov light in extensive air showers produced by different primary particles precisely by. protons, Helium, Iron, Oxygen, Carbon, Nitrogen, Calcium,…

天体物理学 · 物理学 2007-05-23 A. Mishev , J. Stamenov

Using cosmological relativity theory, we derive the formula for the cosmological redshift written explicitly in terms of 1 - "Omega", where "Omega" = "rho"/"rho"_c is the ratio of the average mass density to the critical "closure" density.…

天体物理学 · 物理学 2007-05-23 Moshe Carmeli

Cosmic rays (CRs) generate diffuse emission while interacting with the Galactic magnetic field (B-field), the interstellar gas and the radiation field. This diffuse emission extends from radio, microwaves, through X-rays, to high-energy…

高能天体物理现象 · 物理学 2016-06-22 Elena Orlando

Type-Ia supernova observations yield estimates of the luminosity distance, which includes not only the background luminosity distance, but also the fluctuation due to inhomogeneities in the Universe. In particular, the spatial correlation…

宇宙学与河外天体物理 · 物理学 2020-02-11 Jaiyul Yoo

The non-linear evolution of the energy density of the radiation is shown to induce spectral distortions of the cosmic microwave background both at recombination and during the reionization era. This distortion has the same spectral…

宇宙学与河外天体物理 · 物理学 2011-08-24 Cyril Pitrou , Francis Bernardeau , Jean-Philippe Uzan

In the complete system of equations of evolution of the classical system of charges and the electromagnetic field generated by them, the field variables are excluded. An exact closed relativistic non-Hamiltonian system of nonlocal kinetic…

统计力学 · 物理学 2020-05-19 A. Yu. Zakharov

The recent Planck data of Cosmic Microwave Background (CMB) temperature anisotropies support the Starobinsky theory in which the quadratic Ricci scalar drives cosmic inflation. We build up a multi-dimensional quantum consisted ultraviolet…

高能物理 - 理论 · 物理学 2014-01-30 Fabio Briscese , Leonardo Modesto , Shinji Tsujikawa

The almost perfect uniformity of the cosmic microwave background (CMB) radiation, discovered by Penzias and Wilson in 1965 appears to present clearcut evidence that the universe was uniform and in equilibrium at the decoupling transition…

天体物理学 · 物理学 2007-05-23 Per Bak , Maya Paczuski

Three models of a flat universe of coupled matter and dark energies with different low-redshift parameterizations of the dark energy equation of state are considered. The dark energy is assumed to vary with time like the trace of the…

天体物理学 · 物理学 2011-08-04 A. -M. M. Abdel-Rahman , Ihab F. Riad

An overview is given on the present status of the understanding of the origin of galactic cosmic rays. Recent measurements of charged cosmic rays and photons are reviewed. Their impact on the contemporary knowledge about the sources and…

天体物理学 · 物理学 2009-09-29 Joerg R. Hoerandel

The increase in mass of our observed expansive and isotropic relativistic Universe in the present relativistic cosmology is explained by the extensive assumption of the matter objects emerging on the horizon (of the most remote visibility).…

天体物理学 · 物理学 2008-12-19 V. Skalsky

Over the last decades, observations with increasing quality have revolutionized our understanding of the general properties of the Universe. Questions posed for millenia by mankind about the origin, evolution and structure of the cosmos…

宇宙学与河外天体物理 · 物理学 2020-07-22 Ricardo T. Génova-Santos

Considering the hyperbolic nature of the universe, the Hubble's law and the inverse square laws such as, the Coulomb's law and Newton's gravitational law, should be modified in accordance with the special theory of relativity. Consequently…

天体物理学 · 物理学 2007-05-23 Yongkyu Ko

We propose a relativistic gravitational theory leading to modified Newtonian dynamics, a paradigm that explains the observed universal galactic acceleration scale and related phenomenology. We discuss phenomenological requirements leading…

宇宙学与河外天体物理 · 物理学 2021-10-18 Constantinos Skordis , Tom Zlosnik

We study the present, flat isotropic universe in 1/R-modified gravity. We use the Palatini (metric-affine) variational principle and the Einstein (metric-compatible connected) conformal frame. We show that the energy density scaling…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Nikodem J. Poplawski

H.A. Wilson, then R.H. Dicke, proposed to describe gravitation by a spatial change of the refractive index of the vacuum around a gravitational mass. Dicke extended this formalism in order to describe the apparent expansion of the Universe…

综合物理 · 物理学 2018-06-06 X. Sarazin , F. Couchot , A. Djannati-Atai , M. Urban

Relativistic action-at-a-distance theories with interactions that propagate at the speed of light in vacuum are investigated. We consider the most general action depending on the velocities and relative positions of the particles. The…

高能物理 - 理论 · 物理学 2008-11-26 Domingo J. Louis-Martinez

Based on Lorentz and Levi-Civita's conservation laws, it can be shown that the energy of the matter field in the universe might originate from the gravitational field as a result of the latter field's energy decrease and the total entropy…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Fang-Pei Chen