منابع مشابه
High Precision Cosmology
I review the current status of cosmology as emerging from recent observations of cosmic microwave background anisotropies as well as from other sources of cosmological information.
متن کاملPrecision cosmology and the landscape
After reviewing the cosmological constant problem—why is Λ not huge?— I outline the two basic approaches that had emerged by the late 1980s, and note that each made a clear prediction. Precision cosmological experiments now indicate that the cosmological constant is nonzero. This result strongly favors the environmental approach, in which vacuum energy can vary discretely among widely separated...
متن کاملPrecision cosmology with voids: definition, methods, dynamics
We develop a new cosmic void finding technique based on methods of Lagrangian orbit reconstruction. We propose to define voids as the source point of repulsion of the comoving motion of galaxies in the Universe. We re-define the position and the ellipticity of voids in this Lagrangian framework. We discuss the advantage of this new void finder compared to existing Eulerian techniques. We then d...
متن کاملPrecision cosmology as a test for statistics
We compute the shift in the epoch of matter-radiation equality due to the possible existence of a different statistical (non-extensive) background. The shift is mainly caused by a different neutrinophoton temperature ratio. We then consider the prospects to use future large galaxy surveys and cosmic microwave background measurements to constrain the degree of non-extensivity of the universe.
متن کاملUltra-high precision cosmology from gravitational waves
We show that the Big Bang Observer (BBO), a proposed space-based gravitational-wave (GW) detector, would provide ultra-precise measurements of cosmological parameters. By detecting ∼ 3 × 10 compact-star binaries, and utilizing them as standard sirens, BBO would determine the Hubble constant to ∼ 0.1%, and the dark energy parameters w0 and wa to ∼ 0.01 and ∼ 0.1, respectively. BBO’s dark-energy ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2005
ISSN: 1387-6473
DOI: 10.1016/j.newar.2005.01.039