A handful of them have
redshifts greater than 6, dating them to a time no more than 900 million years after the Big Bang.
Only one quasar was known to exist at
a redshift greater than seven before now, despite extensive searching,» said Xiaohui Fan of the University of Arizona's Steward Observatory.
Not exact matches
Deeper
redshift surveys combined with similar weak lensing maps should reveal an even
greater contribution of star - forming galaxies as tracers of the matter distribution in this higher
redshift range.
However, based on
redshift survey data, in 1989 Margaret Geller and John Huchra discovered the «
Great Wall,» a sheet of galaxies more than 500 million light - years long and 200 million wide, but only 15 million light - years thick.
Lyman - a radiation is
redshifted at very
great distances; the
redshift is caused by the expansion of the universe and is a measure of distance and look - back time.
The higher the
redshift, the
greater the distance, and the further back astronomers are looking in time when they observe the object.
If her model is right, a survey would detect concentric rings of
Great Walls in every direction around Earth, an illusion produced by innumerable distant small clusters appearing to coalesce on
redshift maps.
Other astronomers have claimed to find galaxies at even
greater distances — at
redshifts of 10 and 9, but those findings are still ambiguous, says Joshua Bloom of the University of California, Berkeley, who observed the afterglow using the Gemini South telescope in Chile.
Therefore, evolutionist astronomers believe that star formation rates in our galaxy and nearby galaxies are too slow to be observed, but that amazingly high star formation rates occur in «starburst galaxies» — the brightest galaxies with the
greatest redshifts.
The
greater the
redshift of an object, the more distant it is.
By studying reionization, we can learn a
great deal about the process of structure formation in the universe, and find the evolutionary links between the remarkably smooth matter distribution at early times revealed by CMB studies, and the highly structured universe of galaxies and clusters of galaxies at
redshifts of 6 and below.
Amazon
Redshift is a
great tool for data warehousing.