TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

QSS [1 record]

Record 1 2022-10-28

English

Subject field(s)
  • Radio Waves
  • Astrophysics and Cosmography
  • Space Physics
CONT

Quasars, whose name is derived from the term "quasi-stellar radio sources", are very distant, point-like sources – which is why they received this slightly misleading moniker. (We now know their bright active galactic nuclei are also surrounded by galaxies, but the galaxies' light is difficult to differentiate from the quasars' light.)

French

Domaine(s)
  • Ondes radioélectriques
  • Astrophysique et cosmographie
  • Physique spatiale
DEF

Radiosource ponctuelle dont le rayonnement est très intense et constant à quelques sursauts sporadiques près.

OBS

Le quasar est interprété comme un noyau actif de galaxie observé en dehors de la direction de son jet de matière, son disque d'accrétion étant la source du rayonnement.

OBS

quasar : désignation et définition publiées au Journal officiel de la République française le 4 juin 2019.

Key term(s)
  • radio galaxie

Spanish

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