The gravitational waves are fictitious entities - III

Only Levi-Civita's electromagnetic interpretation of the characteristic hypersurfaces of Einstein field equations is conceptually correct.Comment: 7 pages, PDF from MS-Word9

Einsteinian Manifolds and Gravitational Waves

The full relativity of the concepts of motion and rest, which is characteristic of the Einsteinian general relativity (GR), does not allow the generation of physical gravitational waves (GW's). -- The undulatory nature of a metric tensor is not an invariant property, but depends on the coordinate frame. -- An undulation of a metric tensor is propagated with a speed that can have any value between zero and infinite.Comment: 5 pages, LaTe

Einstein, Levi-Civita, and Bianchi relations

About an essential suggestion to Einstein by Levi-Civita in 1915. Unicuique suum.Comment: 2 pages, LaTeX, to be published on Spacetime & Substanc

Stresses, energy flow and energy density of gravitational nature

Two arguments which show the validity of the concept of gravitational energy put forward by Lorentz and Levi-Civita.Comment: 5 pages, PD

Relativity and wavy motions

The conditions under which the undulatory character of field disturbances is physically significant.Comment: 9 pages, LaTeX, to be published on Spacetime & Substanc

On Kerr's corpuscle

Simple changes of the radial co-ordinate deprive Kerr's spinning corpuscle of its marvellous properties.Comment: 4 pages, PDF from MS-Word97, submitted to Il Nuovo Cimento, Section B, pag.1 first row after eq.(1): replaced "a and r are nonnegative parameters" with "a and M are nonnegative parameters

The black holes are fictive objects

We prove that the anomalous form of Schwarzschild metric within the spatial domain bounded by Schwarzschild pseudosingular surface is a mathematical mishap, devoid of any physical meaning. As a special consequence, the portions of geodesics internal to the above domain are not physically interpretable. Accordingly, the theoretical notion of black hole describes only a fictive object.Comment: 10 pages, PDF from MS-Word 7.0; added a parergon with another argument against the existence of the black hole

On continued gravitational collapse

According to a widespread idee fixe, the spherically-symmetric collapse of a sufficiently massive celestial body of spherical shape should generate a black hole. I prove that this process generates simply an ordinary point mass. My argument is model-independent.Comment: 5 pages, PDF, submitted to Il Nuovo Ciment

Gravitational waves and ether's wind

A very recent research validates observationally the theoretical demonstrations of the physical non-existence of the gravitational waves.Comment: 2 pages, LaTeX, submitted to Il Nuovo Saggiator

Relativistic motions

A physical consequence of a well-known Fermi's theorem: no motion of masses can generate gravitational waves.Comment: 2 pages, PD