Milky Way stars have confirmed the Big Bang theory




Milky Way stars have confirmed the Big Bang theory

The observations of ancient stars with the 10-meter-high observatory in UM Keck and the state of their atmospheres have shown that there is no conflict between the content of lithium-6 and lithium-7 is not. This suggests that the predictions of nucleosynthesis in the standard Big Bang theory is confirmed by our guesses about the early universe.

The team led by Karin Lind of the University of Cambridge found that the use of old equipment at the observatory, and a significant simplification of data analysis led to the false detection of lithium isotope. Observations showed that the Big Bang occurred 13.8 billion years ago, provoked a burst of cosmic microwave background radiation and chemical abundances of light elements, as described by the theory of Big Bang nucleosynthesis (CBF).

“The predictions of Big Bang nucleosynthesis was a significant success of the standard model of this phenomenon,” – said Lind. – “Our research has removed a significant discrepancy between the data on the distribution of lithium-6 and lithium-7 in the stars and the standard CBF, even without the need to completely review the content of the stars. It helps to strengthen the existing model based on the cosmic microwave background, and the expanding universe. ”

By the way, the expanding universe – one of the subjects of study “new Einstein” – Eric Weinstein.

Accurate measurement of the amount of lithium-6 and lithium-7 in the old stars – an extremely difficult task, both from a theoretical and from the observation point of view, especially regarding lithium-6, as this isotope is smaller and it is difficult to identify. The necessary data can be obtained only by means of the largest terrestrial telescopes, like the one that is in the Keck Observatory atop Mauna Kea, equipped with a powerful spectrograph HIRES (High Resolution Echelle Spectrometer), which lays out the starlight into its component colors.

“Back in 2004, has been upgraded HIRES CCDs with smaller pixels, allows us to see fine details of the spectrum,” – said George Melendez of the University of Sao Paulo. – “The high spectral resolution provided by HIRES necessary for the study and evaluation of lithium-6. A large light gathering power of the Keck Observatory allows us to observe the star with a more “holistic” composition than previous studies have allowed. ”

Even with a powerful telescope Keck I, for one star to follow a few hours to collect enough photons for a detailed analysis. Modeling such data is very complex, because the old stars can only simulate the presence of lithium-6 in the atmosphere. The data must be analyzed with an ingenious model atmosphere created in 3D-format and include complex calculations that are processed on supercomputers weeks – the kind that now China is building .

The use of more complex physics and powerful computers allowed the team to fix Lind systematic errors that plagued the traditional modeling and first led to an incorrect determination of the content of isotopes of lithium-6 and lithium-7 in the atmospheres of stars. Thus, the cosmological problem is solved, over which fought physics and astrophysics for the last twenty years.

“Understanding the birth of our universe is critical to further understanding of its key components, including ourselves. The Big Bang model sets the initial conditions for the formation of structure and explanation of our presence in the expanding universe, dominated by dark matter and dark energy. ”

By the way, you’re wondering what happened before the Big Bang ?
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Tags: big bang , the universe , stars .


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