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19932026
most citedThe Gaia mission

7.1k citations

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8 papers · 1 filter

gr-qc2024★ 1 cited

A Relativistic Tensorial Model for Fractional Interaction between Dark Matter and Gravity

Francesco Benetti, Andrea Lapi, Samuele Silveravalle +5

In a series of recent papers it was shown that several aspects of Dark Matter (DM) phenomenology, such as the velocity profiles of individual dwarfs and spiral galaxies, the scalin…

gr-qc2024★ 2 cited

A Relativistic Scalar Model for Fractional Interaction between Dark Matter and Gravity

Francesco Benetti, Andrea Lapi, Giovanni Gandolfi +1

In a series of recent papers we put forward a ``fractional gravity'' framework striking an intermediate course between a modified gravity theory and an exotic dark matter (DM) scen…

gr-qc2021★ 350 cited

Constraints on black-hole charges with the 2017 EHT observations of M87*

Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke +234

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M8…

gr-qc2020★ 347 cited

Gravitational Test Beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

Dimitrios Psaltis, Lia Medeiros, Pierre Christian +185

The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new…

gr-qc2003★ 12 cited

A novel derivation for Kerr metric in Papapetrou gauge

Roberto Bergamini, Stefano Viaggiu

We present a simple novel derivation, ab initio, of the equations appropriate for stationary axisymmetric spacetimes using the Papapetrou form of the metric (Papapetrou gauge). It…

gr-qc1997★ 53 cited

Adiabatic Invariants and Scalar Fields in a de Sitter Space-Time

C. Bertoni, F. Finelli, G. Venturi

The method of adiabatic invariants for time dependent Hamiltonians is applied to a massive scalar field in a de Sitter space-time. The scalar field ground state, its Fock space and…

gr-qc1996★ 5 cited

Inflation for Bianchi IX model

R. Bergamini, P. Sedici, P. Verrocchio

The influence of Inflation on initial (i.e. at Planck's epoch) large anisotropy of the Universe is studied, considering a more general metric than the isotropic one: the locally ro…

gr-qc1996★ 86 cited

The Born-Oppenheimer Approach to the Matter-Gravity System and Unitarity

C. Bertoni, F. Finelli, G. Venturi

The Born-Oppenheimer approach to the matter-gravity system is illustrated and the unitary evolution for matter, in the absence of phenomena such as tunnelling or other instabilitie…