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George A. Baker, Jr

Publications and source records attributed to George A. Baker, Jr.

3 recordsLinked to original sources
arXiv2000

Supernovae evidence for an accelerating expansion of the universe

Recent experimental results find strong indications that the universe is flat, while other experimental results from supernovae Ia observations have been interpreted to show that, not only that there is an accelerating expansion of the universe, but also that the universe is strongly curved. By means of a recently proposed metric, I am able to show that the experimental results which had previously been analyzed to give a strong curvature are quite consistent with a flat universe, thus resolving the apparent mismatch. The conclusion of these latter authors which indicated an accelerating expansion of the universe remains unchanged.

astro-ph↗
arXiv2000

Bound systems in an expanding universe

The Schwarzchild solution insertion in an expanding universe, the so-called "Swiss cheese model," is shown to possess a very unphysical property. Specifically, in this model some trajectories are discontinuous functions of their initial conditions. An alternate metric is proposed as a remedy. It goes smoothly between the Schwarzchild exterior solution and the Friedmann-Lemaitre, expanding universe metric. It is further shown that the effects of the expansion on planetary motions in the solar system are too small to be currently observed for this alternate metric.

astro-ph↗