299 citations · 924 across the 41 of their papers we have counts for
4 papers · 1 filter
Observation angles, Fermi coordinates, and the Geodesic-Light-Cone gauge
Giuseppe Fanizza, Maurizio Gasperini, Giovanni Marozzi +1
We show that the angular directions locally measured by a static geodesic observer in a generic cosmological background and expressed in the system of Fermi Normal Coordinates alwa…
Fractal universe and cosmic acceleration in a Lemaître-Tolman-Bondi scenario
Leonardo Cosmai, Giuseppe Fanizza, Francesco Sylos Labini +2
In this paper we attempt to answer to the question: can cosmic acceleration of the Universe have a fractal solution? We give an exact solution of a Lemaître-Tolman-Bondi (LTB) Univ…
Relations between physical observables: what is better?
Giuseppe Fanizza
We investigate some possible relations between physical observables and estimate the "cosmic variance" which affects these measurements. We focus on redshift and angular-distance a…
Non-linear general relativistic effects in the observed redshift
Giuseppe Fanizza, Jaiyul Yoo, Sang Gyu Biern
We present the second-order expression for the observed redshift, accounting for all the relativistic effects from the light propagation and from the frame change at the observer a…