Theoretical or Mathematical/ gravitational waves/ gravitational wavesnonexistencegravitation/ A0430 Gravitational waves and radiation: theoryDespite persistent efforts over many years the gravitational waves predicted by the general theory of relativity have not been discovered experimentally so far. The present...
We show that gravitational waves which possess a non-vanishing Riemann tensor Riklm 0 always carry energy-momentum and angular momentum. Our proof uses canonical superenergy and supermomentum tensors for the gravitational field.关键词: gravitational waves gravitational energy gravitational superenergy DOI...
The graviton self-interaction also cancels out if the geometry of the gravitational source is spherically symmetric (which the vast majority of theory papers in GR assume in their analyses at the outset). So, for example, it is almost non-existent in an interaction of a single star and a ...
gravitational wavesstars : neutronSoft gamma repeaters are identified as highly magnetized (B~ 10(14) Gauss) neutron stars. Magnetic stresses induce tectonic activity, and field annihilation in faults is the ultimate energy source for the observed gamma -ray emission. As a consequence of the ...
As the cosmic string dissolves, it vibrates, and that vibration can trigger the formation of gravitational waves. Thus, there may not be many cosmic strings left in the universe, explaining why we haven't found any so far — but their gravitational signals may remain. Indeed, ...
The answer to that is to know your own limitations and to direct your personal research towards fields that have some practical meaning in the real world — which pandemics and climate do and (with respect to those physicists with planet-sized brains) the Higgs boson and gravitational waves do...
This allows us to talk more convincingly about how one thing “makes” another happen: depressing a button on the outside of the chamber releases a lever, which makes the platform drop suddenly, whereupon the apple, under the effect of the earth’s gravitational field, accelerates downward. Th...
s gravitational theory. Now, more than200 yearslater, black-hole research has evolved from pure mathematical speculation to a “hard-core’’ science with sound theoretical and observational foundations. Many Noble prizes in physics were, in some degree, related to black holes. In particular, ...
From the 17th to the 19th centuries, the wave theory of light was associated with the postulation of a subtle medium, the luminiferous ether, thought of as the bearer of light waves. In the nineteenth century this was joined by an electromagnetic ether, the seat of electric and magnetic fiel...
‘Look at the breakthroughs NASA is experiencing right now: gravitational waves, new solar systems – and they’ve had to spend a ton of time acknow-ledging flat-earthers. I don’t think it’s a coincidence.’As is obvious, the Beaverton story repeatedly undercuts its presumed surface ...