exacerbate
发表于 2025-3-23 09:41:19
Big Bang Models,view of “the cosmic fluid” and “fundamental observers,” we give a concise derivation of the Robertson-Walker metric and examine some of its properties, then apply it to cosmic dynamics (the Friedmann equations). Finally we will discuss the recent discovery that the universe is accelerating, instead
mydriatic
发表于 2025-3-23 13:52:28
The Inflationary Universe,nd the horizon problem. In the early 1980s, Alan Guth resolved these two problems with his inflationary theory. His basic idea is that the universe enters a false vacuum state shortly after the Big Bang, then tunnels out and expands exponentially. We choose to discuss Guth’s original model (now call
小争吵
发表于 2025-3-23 18:32:40
https://doi.org/10.1057/9780230597273 one special case which can be solved without too much trouble, namely, the static spherically symmetric field produced by a spherically mass M at rest. Schwarzschild first found this in 1916, and this solution has played a major role in the early development of general relativity and is even today
entice
发表于 2025-3-24 01:09:25
https://doi.org/10.1057/9780230503854tested. Some of these tests will be discussed in this chapter. We first discuss the two classical tests: the perihelion shift of Mercury and the deflection of light by gravity, then the time delay of light in a gravitational field (the Shapiro experiment). Finally we will comment on Hulse and Taylor
令人悲伤
发表于 2025-3-24 04:18:35
https://doi.org/10.1057/9780230292505a new golden age of research on black holes. We learned that the actual behavior of black holes is far more interesting than astrophysicists had imagined. This new information forced them to reexamine many of their tacit assumptions. It is beyond the scope of this book to study all the new exciting
heirloom
发表于 2025-3-24 08:27:55
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打击
发表于 2025-3-24 12:36:40
https://doi.org/10.1007/978-3-662-33887-2view of “the cosmic fluid” and “fundamental observers,” we give a concise derivation of the Robertson-Walker metric and examine some of its properties, then apply it to cosmic dynamics (the Friedmann equations). Finally we will discuss the recent discovery that the universe is accelerating, instead
annexation
发表于 2025-3-24 17:29:58
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亚当心理阴影
发表于 2025-3-24 21:25:06
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enmesh
发表于 2025-3-24 23:36:11
Introduction to Cosmology,nifested..In this chapter and in the following chapters, we will be studying cosmology. Cosmologists piece together the observed information about the universe into a selfconsistent theory or model that describes the nature, origin, and evolution of the universe.