Pleader88 Posted September 22, 2014 Author Posted September 22, 2014 I will continue to work with this. I strongly believe the condition exists which in essence removes the variable which leads one to believe that a form of Dark Energy exists. It is our nature to complicate things in order to do the un-natural, where nature tends to do the opposite in it's attempt to restore simplicity.
Mordred Posted October 8, 2014 Posted October 8, 2014 (edited) in some regards your diagram has some basis but not in the way you think. recessive velocity aka expansion is a distance dependant observation based on Hubbles law. the greater th distance the greater the recessive velocity. [latex]V_{recessive}=Hd[/latex] in other words past the Hubbles sphere you can have an apparent recessive velocity in excess of c, at the furthest reaches we have a recessive velocity of 3.1c. however this is due to the distance of measurement not on the actual rate of expansion per unit volume. expansion is homogeneous and isotropic its rate is approximately 67 km/s/Mpc. In other words if you measure that rate of expansion here at Earth to a nearby object, then teleport to the futhest reaches of our observable universe, re-measure the same distance you would get the same rate of expansion. ie from Earth measure 1 Mpc it will increase at 67 km/s then teleport to new location measure 1 Mpc your measure will be 67 km/s the difference in recessive velocity is your adding all the individual Mpc's up to the total distance so naturally the rate of recessive velocity will increase at an exponential rate. say you measure 10 Mpc well this is 67+67+67+67+67+67+67+67+67+67 km/s get the picture? its a common misconception thanks to pop media not looking or understanding the math. further details can be found here http://tangentspace.info/docs/horizon.pdf :Inflation and the Cosmological Horizon by Brian Powell keep in mind Hubble's constant is constant everywhere not gravitationally bound, at the same point in time only Edited October 8, 2014 by Mordred
Pleader88 Posted October 8, 2014 Author Posted October 8, 2014 Mordred, Read the article within the links that I've posted. The universe is not homogeneous and isotropic as you have described. It has a preferred axis of anisotropy.
imatfaal Posted October 8, 2014 Posted October 8, 2014 Mordred - good to see you back Pleader88 - could you summarize the arguments of the paper which shows that the cosmological principle does not apply? We like members to be able to follow argument without going off site
Mordred Posted October 9, 2014 Posted October 9, 2014 (edited) Mordred, Read the article within the links that I've posted. The universe is not homogeneous and isotropic as you have described. It has a preferred axis of anisotropy. maybe your universe does but one of the strongest tenets of observations is that the universe is indeed homogeneous and isotropic at scales of 120Mpc. This is been a well documented and testable observation. More attempts and theories than I can name have tried to fight against this fact. However the PLANCK and WMAP data supports the homogeneous and isotropic universe. However this doesn't change the detail you missed. Recessive velocity is a distance dependant measurement. Yes there have been challenges to the homogeneous and isotropic universe, however in most cases its in regards to the scale of 120 Mpc or higher needed. A few years ago it was accepted to be 100 Mpc, now its more accepted as 120 Mpc. If you can supply peer reviewed and professional data that supports a preferred axis I would be more than happy to look at it. Until then, well lets just say your model will never match observation and therefore is not a practical model except to describe a toy universe expansion measurements show that if you take 3 or more galaxies they expand away from each other equally and away from each other without a change in angles, its pretty easy to measure a preferred direction, even in the slow rotating universe theory (Godel Universe) this however was shown to be inaccurate by observations. After years of studying cosmology I lost track of how many models have been discounted due to not being homogeneous and isotropic models. Both the Einstein field equations and the FLRW metric require the cosmological principle, in order to work the LCDM model is 100% compatible with both those metrics and they do indeed match observational data, this is constantly being retested and challenged, no attempts have thus far succeeded Edited October 9, 2014 by Mordred
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now