Doppler redshift—cosmological redshift—recession velocity1) It is pointed out that the confusion between the velocity v in the classical and relativistic Doppler formulae and the recession velocity v* in cosmology may be partly due to their being indistinguishable at the limit of small z. 2)A...
wherea≡(1+z)−1, wherezis the redshift,H0is the Hubble constant,ΩΛis the cosmological constant, andΩ0is the total matter content in the universe atz=0. The continuity equation for the baryonic gas satisfies ∂ρb∂t=−1a∇⋅(ρbU), (2) whereρb≡a3ρproperis the co-...
We show here one redshift only using data from Viel et al. (), and we demonstrate how power spectra differ when changing the thermal velocity dispersion of the dark matter. The black line is the cold dark matter model which has no thermal ve- locity component in the ...
(no mesh refinement) for 30 time steps, resuming a previous simulation which stopped at redshiftz \sim3. We chose this cosmological epoch because this is often when the most ‘post-processing’ is performed, due the wealth of observational data available for comparison (Heitmann et al.2015; ...
Comparison between the relation of the velocity and redshift predicted by special relativity; Use of Friedmann model in the equation; Importance of redshift in for observational cosmology.BedranMariaLuizaAmerican Journal of PhysicsM.L. Bedran: A comparison between the Doppler and cosmologi- cal red...
Non-dopplerian cosmological redshift parameters in a model of graviton-dusty universedoi:10.1007/978-1-4615-1339-1_20In this paper, possible manifestations of the graviton background in a case of hypothetical superstrong gravitational quantum interaction are considered. On one hand the author gives ...
Possible effects, which could be caused by a hypothetical super-strong interaction of photons or massive bodies with single gravitons of the graviton background, are considered. If full cosmological redshift magnitudes are caused by the interaction, then the luminosity distance in a flat non-...