An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 6 Search : dominate
core-dominated quasar
  کو‌آسار ِ مغزه چیره   
kuâsâr-e maqzé ciré

Fr.: quasar dont l'émission de cœur domine   

A → radio-loud quasar in which the central source is enhanced by → relativistic beaming and characterized by a → flat  → spectrum. It has been conjectured that this phenomenon is an → orientation effect. If a radio-loud quasar is seen along its → jet, it will appear as a core-dominated source. See also → lobe-dominated quasar.

core; → dominate; → quasar.

dominate
  چیریدن   
ciridan

Fr.: dominer   

To have control, authority, or influence; to be the most important or conspicuous person or thing.
core-dominated quasar, → dominant coefficient, → dominated series, → domination, → lobe-dominated quasar, → matter-dominated Universe, → radiation-dominated Universe.

From L. dominatus, p.p. of dominari "to rule, dominate, govern," from dominus, → domain.

Ciridan, from ciré "dominant; powerful; victorious," Mid.Pers. cêr "victorious, brave," Av. cirya- "able, brave."

dominated series
  سری ِ چیریده   
seri-ye ciridé

Fr.: série dominée   

A → series if each of its → terms does not exceed, in absolute value, the corresponding term of some convergent numerical series with positive terms.

Dominated, p.p. of → dominate; → series.

lobe-dominated quasar
  کو‌آسار ِ لپ چیره   
kuasâr-e lap ciré

Fr.: quasar à lobes dominants   

A → radio-loud quasar in which the lobes dominate the whole emission. It has been conjectured that this phenomenon is an → orientation effect. If the → jet is close to the plane of the sky, the lobes will dominate. See also → core-dominated quasar.

lobe; → dominate; → quasar.

matter-dominated Universe
  گیتی ِ مادّه‌چیره   
giti-ye mâdde-ciré

Fr.: Univers dominé par la matière   

A Universe in which the matter energy density (Ωm ≈ 1) provides most of the total energy density. According to the → Big Bang model, in the early history of the → Universe a → radiation-dominated phase preceded the matter-dominated phase. This phase is characterized by R/R0 ∝ t2/3, where R is the → cosmic scale factor and t is time.

matter; → dominate; → Universe.

radiation-dominated Universe
  گیتی ِ تابش‌چیره   
giti-ye tâbeš-ciré

Fr.: Univers dominé par le rayonnement   

An early epoch in the history of the → Universe when the radiation → density parameter was Ωr≈ 1, while other density parameters had negligible contributions. A radiation-dominated Universe is characterized by R/R0 ∝ t1/2, where R is the → cosmic scale factor and t is time. According to the → Big Bang model, the radiation-dominated phase was followed by the → matter-dominated phase.

radiation; → dominate; → Universe.