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Abstract: A new semianalytical model that explains the formation and sizes of the 'great walls' - the largest structures observed in the universe is suggested. Although the basis of the model is the Zel'dovich approximation it has been used in a new way very different from the previous studies. Instead of traditional approach that evaluates the nonlinear density field it has been utilized for identification of the regions in Lagrangian space that after the mapping to real or redshift space (depending on the kind of structure is studied) end up in the regions where shell-crossing occurs. The set of these regions in Lagrangian space form the progenitor of the structure and after the mapping it determines the pattern of the structure in real or redshift space. The particle trajectories have crossed in such regions and the mapping is no longer unique there. The progenitor after mapping makes only one stream in the multi-stream flow regions therefore it does not comprise all the mass. Nevertheless, it approximately retains the shape of the structure. The progenitor of the structure in redshift space depends on a few non-Gaussian fields and also it is strongly affected by two anisotropic fields that determine the pattern of great walls as well as their huge sizes. All the fields used in the mappings are derived from the linear potential smoothed at the current scale of nonlinearity which is $R_{nl} = 2.7$ {\hmpc} for the adopted parameters of the \lcdm universe normalized to $\sigma_8 = 0.8$. The model predicts the existence of walls with sizes significantly greater than 500 {\hmpc} that may be found in sufficiently large redshift surveys.
The scientific models of the evolution of material and structures in the expanding universe fit with the experimental and observational physics very well indeed.There is plenty of time and space for the observed complexities to form. Gravitational collapse tends to form stringy shapes but the first large stars and quasars push material away from them with their radiation and explosive shock waves. and this tends to great bubbles and walls.material can collapse to form large stars in a million years or so and these large stars only last about a million years before exploding violently
G'day SoulYou saidQuoteThe scientific models of the evolution of material and structures in the expanding universe fit with the experimental and observational physics very well indeed.There is plenty of time and space for the observed complexities to form. Gravitational collapse tends to form stringy shapes but the first large stars and quasars push material away from them with their radiation and explosive shock waves. and this tends to great bubbles and walls.material can collapse to form large stars in a million years or so and these large stars only last about a million years before exploding violentlyIf that is so, please provide the science to support such a statement.
Show a potential of over 100,000,000,000 galaxies and within those a variety of galaxy form from spiral to elliptical.How can all these be formed in just 13.7 Billion years?
G'day BoredI do supply much evidence and yet when I request any form of evidence.None are served.
Agreed. Harry Costas we consider you are a troll just trying to start arguments without putting any useful input yourself.
Refer back to my first post, than read your responses.Think about it for a sec.If you wish to add to the discussion than please do so.Leave out the troll parts.So! who can supply scientific evidence to support the BBTor are you too busy trying to insult.
Abstract: The space expansion physics contains several paradoxes which were clearly demonstrated by Edward Harrison (1981, 1995, 2000), who emphasized that the cooling of homogeneous hot gas (including photon gas of CBR) in the standard cosmological model based on the violation of energy conservation by the expanding space. In modern version of SCM the term "space expansion" actually means continuous creation of vacuum, something that leads to conceptual problems. Recent discussion by Francis, Barnes, James, and Lewis (2007) on the physical sense of the increasing distance to a receding galaxy without motion of the galaxy is just a particular consequence of the arising paradoxes. Here we present an analysis of the following conceptual problems of the SCM: the violation of energy conservation for local comoving volumes, the exact Newtonian form of the Friedmann equation, the absence of an upper limit on the receding velocity of galaxies which can be greater than the speed of light, and the presence of the linear Hubble law deeply inside inhomogeneous galaxy distribution. The common cause of these paradoxes is the geometrical description of gravity, where there is no a well defined concept of the energy-momentum tensor for the gravitational field, no energy quanta - gravitons, and no energy-momentum conservation for matter plus gravity because gravity is not a material field.
G'day from the land of ozzzzzz. . . . .Refer back to my first post, than read your responses.. . . . . .So! who can supply scientific evidence to support the BBTor are you too busy trying to insult.