31 citations · 55 across the 9 of their papers we have counts for
Showing 2023Show all
2 papers · 1 filter
astro-ph.CO2023
The density of virialized clusters as a probe of dark energy
Evangelos A. Paraskevas, Leandros Perivolaropoulos
We use the spherical collapse model to demonstrate that the observable average density of virialized clusters depends on the properties of dark energy along with the properties of…
astro-ph.CO2023★ 7 cited
Effects of a Late Gravitational Transition on Gravitational Waves and Anticipated Constraints
Evangelos Achilleas Paraskevas, Leandros Perivolaropoulos
We investigate the evolution of gravitational waves through discontinuous evolution (transition) of the Hubble expansion rate at a sudden cosmological singularity, which may…