Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-09-08
Astronomy and Astrophysics
Astrophysics
Scientific paper
Applying the known physics of plasmas, the 40 plus year old "Strong" Magnetic Field (SMF) model has been extended from explaining the nature of the AGN/quasar central engine, the evolution of galaxies, quasars and jets, the origin of large-scale magnetic fields and large-scale structure of galaxies in our Big Bang Universe, to explaining cosmic repulsion and why it overcame the influence of Gravity only about five billion years ago. Well-known facts about Einstein's general relativity equations, together with the SMF model, are used to explain the astronomical observations that forced us to deduce a present acceleration of the expansion of the Universe. Two groups of astronomical observers, one headed by Saul Perlmutter and the other by Robert Kirshner, recently found an amazing transition, from the expected slowing of the expansion of the Universe due to Gravity, to the expansion of the Universe beginning to be accelerated, at about an age of the Universe of nine billion years in our Big Bang Universe. Profound questions that arise are: what is this "dark energy" causing this result, and why has it started to overcome attractive gravity only in the last five billion years of our 14 billion year old Universe.
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