Réionisation

In Cosmology, the reionisation represents the time when a great number of Atome S existing in the universe were ionized by the Rayonnement intense of probable the very first generation of star S to have illuminated the Univers, the stars of population III. These stars, not observed today, are considered having been very massive, and of this one relatively short lifespan fact. Their important mass their made it possible to radiate with a sufficiently high Température to ionize the interstellar Milieu surrounding. The time of the reionisation is prone to debates still today. An observation called Effet Gunn-Peterson proves that the universe was almost completely réionisé at the time correspondent with a Décalage towards the red of 4. The recent data of the Artificial satellite WMAP allowed in 2003 to put first serious limits over the time of the reionisation, estimated then like being produced at a Décalage towards the red of 17, even 22. In 2006, the new data of this satellite went up this time with a shift towards the red of about 10 to 12. Evidence of the reionisation --->

References

See Works specialized on cosmology

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