Book ChapterDOI
Isotropization of homogeneous cosmological models
Igor D. Novikov
- Vol. 37, pp 273-282
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TLDR
The authors showed that the Friedmann cosmological models are a good approximation today for the expanding universe and this is valid for at least some period of time in the past too, but how did the universe expand and what was the matter distribution close to the starting point, near the cosmologically singularity?Abstract:
Observations primarily of the microwave background radiation show that the Universe expands isotropically with a high degree of accuracy at the present time and that the matter distribution is homogeneous on a large scale. Thus, the Friedmann cosmological models are a good approximation today for the expanding Universe. This is valid for at least some period of time in the past too. But how did the Universe expand and what was the matter distribution close to the starting point, near the cosmological singularity?read more
Citations
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Journal ArticleDOI
Asymptotic self-similarity breaking at late times in cosmology
TL;DR: In this article, the authors studied the late-time evolution of a class of exact anisotropic cosmological solutions of Einstein's equations, namely spatially homogeneous cosmologies of Bianchi type VII0 with a perfect fluid source.
Journal ArticleDOI
Late-time asymptotic dynamics of Bianchi VIII cosmologies
TL;DR: In this article, a complete description of the late-time evolution of non-tilted spatially homogeneous cosmologies of Bianchi type VIII is given, where the source is assumed to be a perfect fluid with equation of state p = (?? 1)?, where? is a constant which satisfies 1??? 2.
Journal ArticleDOI
On the isotropy of the Universe: do Bianchi cosmologies isotropize?
TL;DR: In this article, the evolution of a class of exact anisotropic cosmological solutions of Einstein's equations, namely spatially homogeneous cosmologies of Bianchi type with dust or radiation as the source, is studied.
Journal ArticleDOI
Late-time asymptotic dynamics of Bianchi VIII cosmologies
TL;DR: In this article, the authors give a complete description of the late-time evolution of non-tilted spatially homogeneous cosmologies of Bianchi type VIII, and rigorously establish the limiting behaviour of the models at late times, and give asymptotic expansions for the key physical variables.
References
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Structure and evolution of the universe.
Ia. B. Zeldovich,Igor D. Novikov +1 more
TL;DR: In this paper, a can forming method and apparatus where cut-burrs of a can blank are removed from the ends thereof and an adhesive film is stuck onto the preheated ends of the blank and, then, said ends are subjected to high-frequency induction heating for melting said films to join said ends together in such a manner as to prevent edge effect and associated deformations from occurring, thereby to form a lapped seam having a remarkably high adhesive strength substantially without pinhole formation.