Explanation of the Helium-3 problem

Details Explanation of the Helium-3 problem Explanation of the Helium-3 problem

2011-03-31

arxiv.org/abs/1103.6284v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages

Scientific paper

One of the tests of nucleosynthesis theory is the $^3$He abundance in the Galaxy. $^3$He$^+$ is observed through its 3.46 cm hyperfine level in Hii regions and the $^3$He/H ratio compares well with theory. Since $^3$He can be created or destroyed in nuclear reactions, one would expect that its abundance shows a trend with the amount of such reactions, so with distance to the Center of the Galaxy and with metallicity. Such trends are lacking in observations. This is explained by assuming that the Hii clouds are recently formed out of the primordial micro brown dwarfs of earth mass predicted by gravitational hydrodynamics. If indeed existing, they would preserve their primordial $^3$He/H ratio and spread this when evaporating into Hii clouds, independent of the location in the Galaxy. In the development of the argument, it is also explained that wide binaries do not rule out the MACHO dark matter predicted by gravitational hydrodynamics, but are rather immersed as visible partners in Jeans clusters of dark micro brown dwarfs.

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