Physics Related with Co-moving Coordinate System

Details Physics Related with Co-moving Coordinate System Physics Related with Co-moving Coordinate System

2005-06-30

arxiv.org/abs/gr-qc/0506138v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

The structure and express method changed, but the main ideal kept

Scientific paper

We derive the metric of an expanding universe with zero accelerations by pure kinematic method. By doing so we expatiate physics related with co-moving coordinate system in details. The most important discovery or our study is, in an expanding universe with zero accelerations, the red-shift of photons from distance galaxies is determined by the co-moving coordinate of the source galaxy instead of the scale factor's time dependence. Our discovery is consistent with the current observed super-novaes's luminosity-distance v.s. red-shift relations.

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