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搜索结果: 1-13 共查到理学 Observational constraints相关记录13条 . 查询时间(0.078 秒)
Many dark energy models fail to pass the cosmic age test via the old quasar APM 08279+5255 at redshift $z=3.91$, even the $\Lambda$CDM model and the holographic dark energy model are not exception. I...
We study cosmological dynamics and late-time evolution of an extended induced gravity braneworld scenario. In this scenario, curvature effects are taken into account via the Gauss-Bonnet term in the ...
Many dark energy models fail to pass the cosmic age test via the old quasar APM 08279+5255 at redshift z = 3.91, even the CDM model and the holographic dark energy model are not exception.In this pa...
We study cosmological dynamics and late-time evolution of an extended induced grav-ity braneworld scenario. In this scenario, curvature effects are taken into account via the Gauss-Bonnet term in the...
We study cosmological dynamics and late-time evolution of an extended induced grav-ity braneworld scenario. In this scenario, curvature effects are taken into account via the Gauss-Bonnet term in the...
We study the observational constraints on the exponential gravity model of f(R)=-beta*Rs(1-e^(-R/Rs)). We use the latest observational data including Supernova Cosmology Project (SCP) Union2 compilati...
We study the cosmology of a covariant Galileon field with five covariant Lagrangians and confront this theory with the most recent cosmological probes: the type Ia supernovae data (Constitution and Un...
Energy security and climate change concerns have led to the promotion of biomass-derived ethanol, an oxygenated volatile organic compound (OVOC), as a substitute for fossil fuels. Although ethanol is ...
We consider the observational effects of a deficit angle, w, in the topology of the solar system and in the 'double pulsar' system PSR J0737-3039A/B. Using observations of the perihelion precession of...
We explore the hypothesis that the set of symmetries enjoyed by the theory that describes gravity is not the full group of diffeomorphisms Diff(M), as in General Relativity, but a maximal subgroup of ...
Radial abundance gradients as observational constraints of galactic evolution: planetary nebulae and other objects
Observational constraints on dwarf galaxy evolutiona retrospective of lequeux et al. (1979)。
Shocks that arise from baryonic in-fall and merger events during the structure formation are believed to be a source of cosmic rays. These "struc- ture formation cosmic rays" (SFCRs) would essential...

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