40 citations · 90 across the 4 of their papers we have counts for
4 papers
Is the Hubble diagram of quasars in tension with concordance cosmology?
Hermano Velten, Syrios Gomes
Recently Risaliti \& Lusso [Nature Astron. 3 (2019) 3 272] reported new measurements of the expansion rate of the Universe by constructing the Hubble diagram of 1598 quasars in the…
Degeneracy between nonadiabatic dark energy models and CDM: ISW effect and the cross correlation of CMB with galaxy clustering data
Hermano Velten, Raquel Emy Fazolo, Rodrigo von Marttens +1
As recently pointed out in Ref. [Phys.\ Rev.\ D {\bf 96}, 8, 083502 (2017)] the evolution of the linear matter perturbations in nonadiabatic dynamical dark energy models is almost…
{\it Gauging} the cosmic acceleration with recent type Ia supernovae data sets
Hermano Velten, Syrios Gomes, Vinicius C. Busti
We revisit a model-independent estimator for cosmic acceleration based on type Ia supernovae distance measurements. This approach does not rely on any specific theory for gravity,…
Large scale structure and ISW effect in decaying vacuum cosmology
H. Velten, H. A. Borges, S. Carneiro +2
The concordance particle creation model - a class of CDM cosmologies - is studied using large scale structure (LSS) formation, with particular attention to the integrated Sac…