Cosmological Radar Ranging in an Expanding Universe

Details Cosmological Radar Ranging in an Expanding Universe Cosmological Radar Ranging in an Expanding Universe

2008-05-15

arxiv.org/abs/0805.2197v1

Mon.Not.Roy.Astron.Soc.388:960-964,2008

Astronomy and Astrophysics

Astrophysics

6 Pages. To appear in MNRAS

Scientific paper

10.1111/j.1365-2966.2008.13477.x

While modern cosmology, founded in the language of general relativity, is almost a century old, the meaning of the expansion of space is still being debated. In this paper, the question of radar ranging in an expanding universe is examined, focusing upon light travel times during the ranging; it has recently been claimed that this proves that space physically expands. We generalize the problem into considering the return journey of an accelerating rocketeer, showing that while this agrees with expectations of special relativity for an empty universe, distinct differences occur when the universe contains matter. We conclude that this does not require the expansion of space to be a physical phenomenon, rather that we cannot neglect the influence of matter, seen through the laws of general relativity, when considering motions on cosmic scales.

Affiliated with

Also associated with

No associations

Rating

Cosmological Radar Ranging in an Expanding Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmological Radar Ranging in an Expanding Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological Radar Ranging in an Expanding Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-509113