Nationality French Fields Mathematics, Astronomy | Role Astronomer Name Edouard Roche | |
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Born 17 October 1820
Montpellier ( 1820-10-17 ) Alma mater University of Montpellier Known for Roche sphere, Roche limit, Roche lobe Died April 18, 1883, Montpellier, France | ||
Education University of Montpellier | ||
Lua, teoria da coagreagação Édouard Roche
Édouard Albert Roche (17 October 1820 – 27 April 1883) was a French astronomer and mathematician, who is best known for his work in the field of celestial mechanics. His name was given to the concepts of the Roche sphere, Roche limit and Roche lobe. He also was the author of works in meteorology.
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Biography
He was born in Montpellier, and studied at the University of Montpellier, receiving his D.Sc. in 1844 and later becoming a professor at the same institution, where he served in the Faculté des Sciences starting in 1849. Roche made a mathematical study of Laplace's nebular hypothesis and presented his results in a series of papers to the Academy of Montpellier from his appointment until 1877. The most important were on comets (1860) and the nebular hypothesis itself (1873). Roche's studies examined the effects of strong gravitational fields upon swarms of tiny particles.
He is perhaps most famous for his theory that the planetary rings of Saturn were formed when a large moon came too close to Saturn and was pulled apart by gravitational forces. He described a method of calculating the distance at which an object held together only by gravity would break up due to tidal forces; this distance became known as the Roche limit.
His other best known works also involved orbital mechanics. The Roche lobe describes the limits at which an object which is in orbit around two other objects will be captured by one or the other, and the Roche sphere approximates the gravitational sphere of influence of one astronomical body in the face of perturbations from another heavier body around which it orbits.
Works
Roche's works are in French.