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ONDE GRAVITATIONNELLE [4 records]

Record 1 2023-10-17

English

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

... the big bang does not fit all astronomers' observations. The distribution of matter across space is too uniform to have come from the Big Bang as originally conceived. So in the 1970s, cosmologists postulated a sudden enlargement of the universe, called inflation, that occurred in the first minuscule fraction of a second after the Big Bang ... Only inflation can amplify the primordial gravitational wave signal enough to make it detectable. If primordial gravitational waves have been seen, it means that inflation must have taken place.

French

Domaine(s)
  • Astrophysique et cosmographie
  • Physique spatiale

Spanish

Save record 1

Record 2 2022-01-07

English

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

Primordial gravitational waves, produced nearly 13.8 billion years ago, still echo through the universe today. But they are drowned out by the crackle of gravitational waves produced by more recent events, such as colliding black holes and neutron stars.

French

Domaine(s)
  • Astrophysique et cosmographie
  • Physique spatiale

Spanish

Save record 2

Record 3 2022-01-07

English

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

A gravitational wave is an invisible (yet incredibly fast) ripple in space. Gravitational waves travel at the speed of light (186,000 miles per second). These waves squeeze and stretch anything in their path as they pass by.

French

Domaine(s)
  • Astrophysique et cosmographie
  • Physique spatiale
CONT

Les ondes gravitationnelles sont des ondes se propageant dans le tissu élastique de l'espace-temps dont les déformations et la courbure sont gouvernées par les équations de la relativité générale. Elles se propagent à la vitesse de la lumière en transportant de l'énergie.

Spanish

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Record 4 2002-09-17

English

Subject field(s)
  • Atmospheric Physics
DEF

Wave characterized by vertical displacements of stable air from the level of static equilibrium of this air.

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Onde caractérisée par des déplacements verticaux d'air stable à partir du niveau d'équilibre statique de cet air.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

Onda caracterizada por desplazamientos verticales de aire estable con respecto a su nivel de equilibrio estable.

Save record 4

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