Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-10-29
CP698, Intersections of Particle and Nuclear Physics: 8th Conference, edited by Z.Parsa, 2003 American Institute of Physics, p
Astronomy and Astrophysics
Astrophysics
A typographical error in equation (7) page 3 has been corrected
Scientific paper
10.1063/1.1664254
It is proposed that when the era of the big-bang nucleosynthesis ended, almost all of the 75 percent of the observed total baryonic matter remained in the form of hydrogen and continued to exist in the form of protons and electrons. They are present today as baryonic dark matter in the form of intergalactic hydrogen plasma. To test our hypothesis we have investigated the effects of Thomson scattering by free electrons on the reported dimming of Type Ia supernovae. The quantitative results of our calculation suggest that the dimming of these supernovae, which are dimmer than expected and hence more distant than predicted by Hubble expansion, is a result of Thomson scattering without cosmic acceleration.
Choudhury D. C.
Kraft David W.
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