TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

In 1996, comets were found to emit X-rays. These X-rays surprised researchers, because X-rays are typically emitted by hot objects and comets are cold. The X-rays were generated by the interaction between comets and the solar wind: when highly charged ions fly through a cometary atmosphere, they collide with cometary atoms and molecules. In these collisions, the ions will capture one or more electrons leading to emission of X-rays and far ultraviolet photons.  2, fiche 1, Anglais, - cometary%20atmosphere

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Les techniques d'observation des atmosphères cométaires sont nombreuses. Les plus anciennes sont l'imagerie et la photométrie (mesure de l'intensité d'une source lumineuse) dans le spectre visible; elles permettent de suivre l'évolution de l'activité cométaire et d'étudier la distribution des poussières.  2, fiche 1, Français, - atmosph%C3%A8re%20com%C3%A9taire

Fiche 1,  Justifications,  Espagnol