backround on bigbang nucleosynthesis



In physical cosmology, Big Bang nucleosynthesis (abbreviated BBN, also known as primordial nucleosynthesis, arch(a)eonucleosynthesis, archonucleosynthesis, protonucleosynthesis and pal(a)eonucleosynthesis) refers to the production of nuclei other than those of the lightest isotope of hydrogen (hydrogen-1, 1H, having
In physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than H-1, the normal, light hydrogen, during the early phases of the universe, shortly after the Big Bang. It is believed to be responsible for the formation of hydrogen (H-1 or simply H), its isotope deuterium
Big Bang Nucleosynthesis. The Universe's light-element abundance is another important criterion by which the Big Bang hypothesis is verified. It is now known that the elements observed in the Universe were created in either of two ways. Light elements (namely deuterium, helium, and lithium) were produced in the first few
The image illustrates two of the nuclear reactions occuring during Big Bang Nucleosynthesis: It shows protons and neutrons combining to form deuterium nuclei (D, ... letter eta, which is defined as the total number of protons and neutrons in our universe, divided by the number of photons in the cosmic background radiation.
We discuss the present status of the big bang nucleosynthesis and its consistency with the recent observation of the cosmic microwave background radiation. It is found that there exists some discrepancy and the possible solutions to solve the discrepancy by non-standard scenarios such as varying fine structure constant
05.03.2017 -
Abstract: Over the last decade, cosmological observations have attained a level of precision which allows for very detailed comparison with theoretical predictions. We are beginning to learn the answers to some fundamental questions, using information contained in Cosmic Microwave Background Anisotropy (CMBA) data.
A1143: History of the Universe, Autumn 2012. 10. Big Bang Nucleosynthesis and the Cosmic Microwave Background. Reading: Assuming that you have already read Chapter 5 and Sections 8.1-8.3 (go back to them if you haven't), go on to read section 8.4. You can skip 8.5, which is a level of detail we won't have time to get
20.12.2017 -
16.04.2010 -

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