24 citations · 46 across the 15 of their papers we have counts for
7 papers · 1 filter
Supernovae evidence for foundational change to cosmological models
Antonia Seifert, Zachary G. Lane, Marco Galoppo +2
We present a new, cosmologically model-independent, statistical analysis of the Pantheon+ type Ia supernovae spectroscopic dataset, improving a standard methodology adopted by Lane…
A Novel Test for MOND: Gravitational Lensing by Disc Galaxies
Christopher Harvey-Hawes, Marco Galoppo
Disc galaxies represent a promising laboratory for the study of gravitational physics, including alternatives to dark matter, owing to the possibility of coupling rotation curves'…
The need for a nonlocal expansion in general relativity
Marco Galoppo, Giorgio Torrieri
Motivated by known facts about effective field theory and non-Abelian gauge theory, we argue that the post-Newtonian approximation might fail even in the limit of weak fields and s…
Quasilocal Newtonian limit of general relativity and galactic dynamics
Marco Galoppo, Federico Re, David L. Wiltshire
We present a new self-consistent perturbative expansion for realistic isolated differentially rotating systems -- disc galaxies. At leading order it is formally equivalent to Ehler…
Kerr--Newman Memory Effect
Marco Galoppo, Rudeep Gaur, Christopher Harvey-Hawes
We bring the Kerr--Newman spacetime into the Bondi--Sachs gauge by means of zero angular momentum, null geodesics. We compute the memory effect produced at the black hole horizon b…
Exact solutions for differentially rotating galaxies in general relativity
Marco Galoppo, David L. Wiltshire
Two classes of stationary axisymmetric solutions of Einstein's equations for isolated differentially rotating matter sources are presented. The asymptotic regime is extracted, with…
Effective galactic dark matter: first order general relativistic corrections
Federico Re, Marco Galoppo
Stationary, axisymmetric, dust sourced solutions of Einstein's equations have been proposed as fully general relativistic models for disc galaxies. These models introduce a novel p…