3 papers
astro-ph.CO2025
Two per cent measurement of from Cepheids alone
Richard Stiskalek, Harry Desmond, Eleni Tsaprazi +4
One of the most pressing problems in current cosmology is the cause of the Hubble tension. We revisit a two-rung distance ladder, composed only of Cepheid periods and magnitudes, a…
astro-ph.CO2025
Euclid preparation. Establishing the quality of the 2D reconstruction of the filaments of the cosmic web with DisPerSE using Euclid photometric redshifts
Euclid Collaboration, N. Malavasi, F. Sarron +313
Cosmic filaments are prominent structures of the matter distribution of the Universe. Modern detection algorithms are an efficient way to identify filaments in large-scale observat…
astro-ph.CO2019
Relativistic approach to the kinematics of large-scale peculiar motions
Eleni Tsaprazi, Christos G. Tsagas
We consider the linear kinematics of large-scale peculiar motions in a perturbed Friedmann universe. In so doing, we take the viewpoint of the "real" observers that move along with…