10 citations · 17 across the 4 of their papers we have counts for
4 papers
On defining astronomically meaningful Reference Frames in General Relativity
L. Filipe O. Costa, Francisco Frutos-Alfaro, José Natário +1
In a recent paper we discussed when it is possible to define reference frames nonrotating with respect to distant inertial reference objects (extension of the IAU reference systems…
Comment on "The Tully-Fisher law and dark matter effects derived via modified symmetries" by Arraut Ivan
L. Filipe O. Costa, F. Frutos-Alfaro, José Natário +1
It has been claimed in I. Arraut, 2023 EPL 144 29003 [arXiv:2311.05652] that General Relativity can generate effects equivalent to dark matter, based on a "new modified symmetry th…
Relativistic effects cannot explain galactic dynamics
L. Filipe O. Costa, José Natário
It has been suggested in recent literature that nonlinear and/or gravitomagnetic general relativistic effects can play a leading role in galactic dynamics, partially or totally rep…
Reference frames in General Relativity and the galactic rotation curves
L. Filipe O. Costa, José Natário, F. Frutos-Alfaro +1
The physical interpretation of the exact solutions of the Einstein field equations is, in general, a challenging task, part of the difficulties lying in the significance of the coo…