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Indirect evidence for the existence of gravitational waves

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: N. Ionescu-Pallas, M.I. Piso, Silvia Onofrei

Editorial: V. Melnikov, Y. Bronnikov, Proceedings of the 8th Russian Gravitational Association Conference, 1, p.47, 1993.

Rezumat:

Starting from a stati spherically symmetric solution of the Einstein’s field equaitons in the second approximation in the perfect fluid scheme, in the exterior of the source, the corresponding metrics depend on a dimensionless parameter alpha. Taking the Sun for the source, the influence of alpha on the classical Solar System tests of the general relativity is estimated, the only alpha-dependent being the Shapiro radar-echo experiment. performing such a test in given conditions within a precision better than 10-2, it is possible to obtain an experimental value for alpha. If alpha – 1, the Einstein’s equations in the weak field approximation take the d’Alembert form, which attests the existence of gravitational waves.

Cuvinte cheie: general relativity and gravitation, exact solutions, Solar System tests