4
   

Redshift and the Curvature of Space

 
 
Reply Tue 4 Mar, 2014 02:27 am
If space is curved, then the nature of the cosmological redshift and time dilation is the same effect as the gravitational redshift and time dilation in a gravitational field. This is confirmed by the fact that the ratio between redshift and time dilation is the same for both gravitational and cosmological redshifts.

Let us assume that the universe is infinite and:
> the universe is uniformly filled with matter with density ρ
> let's introduce two points in space : we are the point A. We are observing photons from the point B.
Let us consider a curved universe (http://en.wikipedia.org/wiki/Ricci_curvature). In these coordinates the volume form expands in a Taylor series around the vicinity of any point p:
http://soundgraffiti.net/f/1.bmp
Thus, if the Ricci curvature Ric(ξ,ξ) is positive in the direction of a vector ξ, the conical region in M swept out by a tightly focused family of short geodesic segments emanating from p with initial velocity inside a small cone around ξ will have smaller volume than the corresponding conical region in Euclidean space, just as the surface of a small spherical wedge has lesser area than a corresponding circular sector. Similarly, if the Ricci curvature is negative in the direction of a given vector ξ, such a conical region in the manifold will instead have larger volume than it would in Euclidean space., such a conical region in the manifold will instead have larger volume than it would in Euclidean space[1].
Let's assume that the Ricci curvature is negative in all the directions. If the Ricci curvature is negative, the density integral of the current volume per volume unit, from the point of view A, will also be greater in B, just as the gravitational potential .http://soundgraffiti.net/f/2.bmp
In other words, the gravitational potential (ψ) for the photon travelling from B (ψ 1) to A (ψ o) from the point of view A will decrease.
As a result, we get a gravitational redshift (in the linear approximation) Z = (Δ ψ) / c2 and the difference of potentials for B and A is proportional to the difference in volumes (ψ 1/ ψ 0 = V1/V0), moreover we also observe time dilation Δt1 = Δt0 (1 + (Δψ) / c2), observed at the point A for the photon from point B (which fully corresponds to the existing relation between the redshift Z and time dilation (Δt1 = (1 + Z) Δt0) in the spectra of galaxies))
Evidently, in the case of curved space there are no equal relative observation points (in any inertial reference systems, at least in contrast to SR), there are only absolute one, for each point in space.
From our point of observation (A), for a photon arriving from B, the gravitational potential at point B is greater (and vice versa).
And on the other hand, from our point of observation (A), for the photon radiated from A, the gravitational potential at point B is less, and the Ricci curvature is positive in relation to it.
And here we have a paradox, although one not greater than the difference of volumes from different points of observation.
And it concerns only the particle motion between points A and B
When a photon is radiated, its state at the given time is immediately beyond the event horizon for the source. Therefore it is more correct to consider a negative Ricci curvature (the state of photon source, the point A, is determined by events at the point A and by the outside information, not by the state of radiated photon at the given moment in time).
The above is also (must be) true for the gravitational potential (as the sum of gravitational waves and fields, where the contribution of gravitational waves may be greater).

source : http://soundgraffiti.net/f/fp_100en.doc

  • Topic Stats
  • Top Replies
  • Link to this Topic
Type: Discussion • Score: 4 • Views: 1,577 • Replies: 5
No top replies

 
contrex
 
  2  
Reply Tue 4 Mar, 2014 10:59 am
@Arhi-Med,
Why did you copy and paste all that text?
Arhi-Med
 
  1  
Reply Tue 4 Mar, 2014 09:02 pm
@contrex,
Many people do not read the text link (difficult?)
And actively discussing

0 Replies
 
neologist
 
  1  
Reply Wed 5 Mar, 2014 12:06 am
@Arhi-Med,
As profound as is the mentality of a2k members, you may find more active discussion by summarizing the scope of your posts. In short: what are you talking about?

Arhi-Med
 
  1  
Reply Thu 10 Apr, 2014 08:44 am
@neologist,
I send Manuscript to [email protected]
answer from [email protected]
-----------------------------------------------
8th March 2014
Dr Valery Zhukov
Natanya
ISRAEL
Dear Dr Zhukov,
Manuscript number: 1253174
Thank you for submitting your manuscript "Redshift and the Curvature of Space" to Science. Unfortunately, this is not the sort of work that we publish and we are thus not considering it for publication. We are notifying you so that you can submit your work elsewhere.
Sincerely,
Monica Bradford
Executive Editor
0 Replies
 
bobsal u1553115
 
  1  
Reply Thu 10 Apr, 2014 08:49 am
Thos editers at Science shur rite purty leters.
0 Replies
 
 

Related Topics

New Propulsion, the "EM Drive" - Question by TomTomBinks
The Science Thread - Discussion by Wilso
Why do people deny evolution? - Question by JimmyJ
Are we alone in the universe? - Discussion by Jpsy
Fake Science Journals - Discussion by rosborne979
Controvertial "Proof" of Multiverse! - Discussion by littlek
 
  1. Forums
  2. » Redshift and the Curvature of Space
Copyright © 2021 MadLab, LLC :: Terms of Service :: Privacy Policy :: Page generated in 0.04 seconds on 09/20/2021 at 11:25:25