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The Primeval Structure Telescope (PaST), also called 21 Centimetre Array (21CMA), is a Chinese radio telescope array designed to detect the earliest luminous objects in the universe, including the first stars, supernova explosions, and black holes. All of these objects were strong sources of ultraviolet radiation, so they ionised the material surrounding them. The structure of this reionisation reflects the overall density structure at the redshift of luminous-object formation.

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  • 21 Centimeter Array (fr)
  • Primeval Structure Telescope (en)
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  • The Primeval Structure Telescope (PaST), also called 21 Centimetre Array (21CMA), is a Chinese radio telescope array designed to detect the earliest luminous objects in the universe, including the first stars, supernova explosions, and black holes. All of these objects were strong sources of ultraviolet radiation, so they ionised the material surrounding them. The structure of this reionisation reflects the overall density structure at the redshift of luminous-object formation. (en)
  • 21 Centimeter Array (21CMA), anciennement Primeval Structure Telescope (PAST), est un radiotélescope chinois situé dans l’ouest de la province du Xinjiang sur le haut plateau d’Ulastai dont l'objectif est l'observation des premiers objets lumineux de l'univers. Il est constitué d'un réseau d'une dizaine de milliers d'antennes. 21CMA fait partie des . Il est entré en fonction en 2007. (fr)
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  • 21 Centimeter Array (21CMA), anciennement Primeval Structure Telescope (PAST), est un radiotélescope chinois situé dans l’ouest de la province du Xinjiang sur le haut plateau d’Ulastai dont l'objectif est l'observation des premiers objets lumineux de l'univers. Il est constitué d'un réseau d'une dizaine de milliers d'antennes. 21CMA fait partie des . Il est entré en fonction en 2007. Le radiotélescope permet une résolution angulaire de 4 minutes d'arc et une sensibilité de 1 millikelvin/jour. Il observe la raie spectrale de l'hydrogène neutre, dont la longueur d'onde est de 21 cm et à laquelle il doit son nom. La surface de collecte du radiotélescope a une superficie de 70 000 m² et son champ est de 2 x 2 degrés. (fr)
  • The Primeval Structure Telescope (PaST), also called 21 Centimetre Array (21CMA), is a Chinese radio telescope array designed to detect the earliest luminous objects in the universe, including the first stars, supernova explosions, and black holes. All of these objects were strong sources of ultraviolet radiation, so they ionised the material surrounding them. The structure of this reionisation reflects the overall density structure at the redshift of luminous-object formation. (en)
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