O próximo Seminário semanal do Centro de Astrofísica e Gravitação (CENTRA) será realizado no dia 19 de março de 2020, pelas 14h30, através do sistema de Videoconferência da plataforma Zoom (link: https://zoom.us/j/282040831 / contact justin.feng@tecnico.ulisboa.pt).
“Satellite laser-ranging as a probe of fundamental physics” é o título do evento que será apresentado pelo professor Richard Matzner (Austin’s College of Natural Sciences, University of Texas, USA).
Resumo:
Satellite laser-ranging is successfully used in space geodesy, geodynamics and Earth sciences; and to test fundamental physics and specific features of General Relativity. We present a confirmation to approximately one part in a billion of the fundamental weak equivalence principle (“uniqueness of free fall”) in the Earth’s gravitational field, obtained with three laser-ranged satellites, at previously untested range and with previously untested materials. the weak equivalence principle is at the foundation of General Relativity and of most gravitational theories.
