Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-07-13
Mon.Not.Roy.Astron.Soc.381:L50-L54,2007
Astronomy and Astrophysics
Astrophysics
5 pages, accepted for publication in MNRAS Letters
Scientific paper
10.1111/j.1745-3933.2007.00364.x
A straight-forward interpretation of standard Friedmann-Lemaitre-Robertson-Walker (FLRW) cosmologies is that objects move apart due to the expansion of space, and that sufficiently distant galaxies must be receding at velocities exceeding the speed of light. Recently, however, it has been suggested that a simple transformation into conformal coordinates can remove superluminal recession velocities, and hence the concept of the expansion of space should be abandoned. This work demonstrates that such conformal transformations do not eliminate superluminal recession velocities for open or flat matter-only FRLW cosmologies, and all possess superluminal expansion. Hence, the attack on the concept of the expansion of space based on this is poorly founded. This work concludes by emphasizing that the expansion of space is perfectly valid in the general relativistic framework, however, asking the question of whether space really expands is a futile exercise.
Barnes Luke A.
Francis Matthew J.
James Berian J.
Lewis Geraint F.
No associations
LandOfFree
Coordinate Confusion in Conformal Cosmology 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 Coordinate Confusion in Conformal Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinate Confusion in Conformal Cosmology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-253723