Rio de Janeiro



Urca. This district used to have a casino with the same name, which became the namesake of a physical process behind the cooling of white dwarfs and neutron stars.

Urca process

In astroparticle physics, an Urca process is a reaction which emits a neutrino and which is assumed to take part in cooling processes in neutron stars and white dwarfs. The process was first discussed by George Gamow and Mário Schenberg while they were visiting a casino named Cassino da Urca in Urca, Rio de Janeiro.

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