359 citations · 3.2k across the 86 of their papers we have counts for
5 papers · 1 filter
Reconstruction of the null-test for the matter density perturbations
Savvas Nesseris, Domenico Sapone, Juan García-Bellido
We systematically study the null-test for the growth rate data first presented in [S. Nesseris and D. Sapone, arXiv:1409.3697] and we reconstruct it using various combinations of d…
A novel null test for the CDM model with growth-rate data
Savvas Nesseris, Domenico Sapone
Current and upcoming surveys will measure the cosmological parameters with an extremely high accuracy. The primary goal of these observations is to eliminate some of the currently…
Comparison of piecewise-constant methods for dark energy
Savvas Nesseris, Domenico Sapone
We compare four different methods that can be used to analyze the type Ia supernovae (SnIa) data, ie to use piecewise-constant functions in terms of: the dark energy equation of st…
Cosmological perturbations and observational constraints on nonlocal massive gravity
Savvas Nesseris, Shinji Tsujikawa
Nonlocal massive gravity can provide an interesting explanation for the late-time cosmic acceleration, with a dark energy equation of state smaller than in the pa…
Curvature vs Distances: testing the FLRW cosmology
Domenico Sapone, Elisabetta Majerotto, Savvas Nesseris
We test the FLRW cosmology by reconstructing in a model-independent way both the Hubble parameter and the comoving distance via the most recent Hubble and Supernovae…