搜索结果: 1-8 共查到“星系与宇宙学 Modified”相关记录8条 . 查询时间(0.459 秒)
Equation of State for Dark Energy in Modified Gravity Theories
Modified theories of gravity Dark energy Cosmology
2012/2/21
We explore the equation of state (EoS) for dark energy $w_{\mathrm{DE}}$ in modified gravitational theories to explain the current accelerated expansion of the universe. We explicitly demonstrate that...
Interacting dark matter and modified holographic Ricci dark energy induce a relaxed Chaplygin gas
interaction modifi ed Ricci’s cutoff dark energy dark matter relaxed Chaplygin gas
2011/10/13
We investigate a model of interacting dark matter and dark energy given by a modified holographic Ricci's cutoff in a spatially flat Friedmann-Robertson-Walker (FRW) space-time. We consider a non line...
A modified star formation law as a solution to open problems in galaxy evolution
galaxies: evolution – galaxies: formation – galaxies: stellar content –galaxies: haloes
2011/10/13
In order to reproduce the low mass end of the stellar mass function, most current models of galaxy evolution invoke very efficient supernova feedback. This solution seems to suffer from several shortc...
Beyond Einstein: Cosmological Tests of Model Independent Modified Gravity
Beyond Einstein: Cosmological Model Independent Modified Gravity
2011/10/8
Model-independent parametrisations of modified gravity have attracted a lot of attention over the past few years; numerous combinations of experiments and observables have been suggested to constrain ...
Towards a fully consistent parameterization of modified gravity
fully consistent parameterization modified gravity
2011/9/27
There is a distinct possibility that current and future cosmological data can be used to constrain Einstein's theory of gravity on the very largest scales. To be able to do this in a model-independent...
Towards a fully consistent parameterization of modified gravity
fully consistent parameterization modified gravity
2011/9/27
There is a distinct possibility that current and future cosmological data can be used to constrain Einstein's theory of gravity on the very largest scales. To be able to do this in a model-independent...
Modified F(R) Horava-Lifshitz gravity: a way to accelerating FRW cosmology
Horava-Lifshitz gravity FRW cosmology
2010/3/19
Masud Chaichian, Shin'ichi Nojiri, Sergei D. Odintsov, Markku Oksanen, Anca Tureanu
(Submitted on 22 Jan 2010 (v1), last revised 14 Mar 2010 (this version, v2))
Abstract: We propose a general approa...
A recent study of the satellite galaxies surrounding the Milky Way casts doubt on existing models of dark matter — according to its authors in Germany, Austria and Australia. The locations of the gala...