71 citations · 72 across the 4 of their papers we have counts for
4 papers
Measuring cosmic dipole with the GRB luminosity-time relation
Jessica Santiago, Kerkyra Asvesta, Maria Giovanna Dainotti +1
We present a new analysis of cosmic dipole anisotropy using gamma-ray bursts (GRBs) as high-redshift standardizable candles. GRBs are ideal probes for testing the cosmological prin…
Large-scale peculiar velocities in the universe
Christos G. Tsagas, Leandros Perivolaropoulos, Kerkyra Asvesta
Observations have repeatedly confirmed the presence of large-scale peculiar motions in the universe, commonly referred to as ``bulk flows''. These are vast regions of the observabl…
Observational constraints on the deceleration parameter in a tilted universe
Kerkyra Asvesta, Lavrentios Kazantzidis, Leandros Perivolaropoulos +1
We study a parametrization of the deceleration parameter in a tilted universe, namely a cosmological model equipped with two families of observers. The first family follows the smo…
The deceleration parameter in `tilted' Friedmann universes: Newtonian vs relativistic treatment
C. G. Tsagas, M. I. Kadiltzoglou, K. Asvesta
Although bulk peculiar motions are commonplace in the universe, most theoretical studies either bypass them, or take the viewpoint of the idealised Hubble-flow observers. As a resu…