Radial photon paths in a cosmic model: A student exercise

Details Radial photon paths in a cosmic model: A student exercise Radial photon paths in a cosmic model: A student exercise

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983amjph..51.1102h&link_type=abstract

American Journal of Physics, Volume 51, Issue 12, pp. 1102-1107 (1983).

Physics

1

Relativity And Gravitation

Scientific paper

We address primarily the question of why it is that early light has taken so long to reach us given that initially all galaxies were so close together in a big bang model. We perform a pair of simple numerical integrations in order to trace the present photon trajectory backward in time. We find that this data not only answers our initial question but is also sufficient to make several model predictions and alternative ``world maps'' of galactic trajectories.

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