astronomers have discovered in the Depths of space, a lonely cloud of gas, which is well preserved since the big Bang unchanged. The discovery of such a “fossil” enables insights into how the first galaxies in the universe have formed, explained the Keck Observatory in Hawaii, with its instruments, the discovery was successful.
It is according to the researchers, this is the third such so-called big Bang relic that has been spotted in the cosmos.
Directly after the big Bang, there was in the universe initially only hydrogen and Helium. All the other chemical elements are only baked by nuclear fusion in stars and their Explosion into space were hurled.
“Wherever we look, the Gas in the universe is contaminated by heavy elements, the waste products of exploding stars,” explains Frédéric Robert of Swinburne University in Australia Hawthorn, in a communication to the Observatory. “But this particular cloud seems to be untouched, not contaminated by stars.”
The gas cloud is so far away that the radiation was of up to us billion years of on-the-go. The astronomers see it as it was about 1.5 billion years after the big Bang. Today, the universe is 13.8 billion years old.
The Team of Frédéric Robert introduces the primal cloud in one of the coming issues of the British journal “Monthly Notices of the Royal Astronomical Society” (“MNRAS”).
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The researchers were specifically looking for such a pristine clouds of gas. They analyzed the light from more distant, bright galaxies, called quasars. Such a Quasar shines through the original gas cloud from the rear, which allows for an analysis of the chemical composition of Certain molecules and elements to swallow the targeted lengths of light of a specific wave.
Fans out the light from the Quasar into its rainbow colors, the Absorption by the Gas in the Form of dark lines noticeable. In the studied gas cloud, the astronomers found, however, no such absorption lines of elements heavier than Helium.
“If you have any heavy elements, it has to be less than one ten-thousandth of a share, in the sun,” says Robert. “This is extremely little. The most convincing explanation is that it is a genuine relic of the big Bang.”
the two similar to that of pristine clouds of gas, which had previously been tracked, the finds were random. “We thought you were the tip of the iceberg. But no one has anything discovered something Similar – they are clearly very rare and hard to see,” said co-discoverer John O’meara from the Keck Observatory, who is also the Co-author of the new publication.
The new Fund is the result of a targeted search. The sky could now systematically according to these fossils from the big Bang through patterns, complemented Roberts ‘ colleague at the Institute and Co-author Michael Murphy. “This will tell us how rare they are, and help us to understand how some of the Gas in the early universe stars and galaxies formed, and some of it not.”
By Till Mundzeck, dpa/boj