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Constraining power of cosmological observables: blind redshift spots and optimal ranges
L. Kazantzidis, L. Perivolaropoulos, F. Skara
A cosmological observable measured in a range of redshifts can be used as a probe of a set of cosmological parameters. Given the cosmological observable and the cosmological parame…
Consistency of Modified Gravity with a decreasing in a CDM background
Radouane Gannouji, Lavrentios Kazantzidis, Leandros Perivolaropoulos +1
Recent analyses \cite{Nesseris:2017vor,Kazantzidis:2018rnb} have indicated that an effective Newton's constant decreasing with redshift may relieve the observed te…
Gravitational Interactions of Finite Thickness Global Topological Defects with Black Holes
L. Perivolaropoulos
It is well known that global topological defects induce a repulsive gravitational potential for test particles. 'What is the gravitational potential induced by black holes with a c…
Evolution of the tension with the Planck15/CDM determination and implications for modified gravity theories
Lavrentios Kazantzidis, Leandros Perivolaropoulos
We construct an updated extended compilation of distinct (but possibly correlated) Redshift Space Distortion (RSD) data published between 2006 and 2018. It consists of 63…