搜索结果: 1-10 共查到“天文学 Anisotropic”相关记录10条 . 查询时间(0.14 秒)
Gravitational instability of the primordial plasma: anisotropic evolution of structure seeds
Gravitational instability primordial plasma: anisotropic evolution
2011/10/10
We study how the presence of a background magnetic field, of intensity compatible with current observation constraints, affects the linear evolution of cosmological density perturbations at scales bel...
Cosmological Perturbation Theory With Background Anisotropic Curvature
Cosmological Perturbation Theory Background Anisotropic Curvature
2011/10/18
The theory of cosmological perturbations is extended to spacetimes displaying isotropic expansion but anisotropic curvature. The perturbed Einstein equation and Boltzmann equations for massless and ma...
Anisotropic Inflation from Charged Scalar Fields
Anisotropic Inflation Charged Scalar Fields
2011/1/11
We consider models of inflation with $U(1)$ gauge fields and charged scalar fields including symmetry breaking potential, chaotic inflation and hybrid inflation. We show that there exist attractor sol...
Anisotropic AGN Outflows and Enrichment of the Intergalactic Medium. II. Metallicity
cosmology — galaxies active — galaxies jets — intergalactic medium — methods
2010/11/15
We investigate the large-scale influence of outflows from AGNs in enriching the IGM with metals in a cosmological context. We combine cosmological simulations of large-scale structure formation with a...
Cosmological MHD simulations of cluster formation with anisotropic thermal conduction
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/29
The ICM has been suggested to be buoyantly unstable in the presence of magnetic field and anisotropic thermal conduction. We perform first cosmological simulations of galaxy cluster formation that sim...
The Nature of Primordial Fluctuations from Anisotropic Inflation
Primordial Fluctuations Anisotropic Inflation
2010/3/9
We study the statistical nature of primordial fluctuations from an anisotropic inflation which is realized by a vector field coupled to an inflaton. We find a suitable gauge, which we call the canonic...
Scalar-Scalar, Scalar-Tensor, and Tensor-Tensor Correlators from Anisotropic Inflation
Scalar-Tensor Scalar-Scalar Tensor-Tensor Anisotropic Inflation
2010/3/22
We compute the phenomenological signatures of a model (Watanabe et al' 09) of anisotropic inflation driven by a scalar and a vector field. The action for the vector is U(1) invariant, and the model is...
Effects of Anisotropic Thermal Conduction on X-Ray Emission from SNRS
Thermal Conduction X-Ray Emission
2009/6/16
Effects of Anisotropic Thermal Conduction on X-Ray Emission from SNRS。
New VLA Observations of WR 6 (= HR 50896): A Search for an Anisotropic Wind
wolf rayet stellar winds stars
2009/6/4
New VLA Observations of WR 6 (= HR 50896): A Search for an Anisotropic Wind。
Anisotropic unstable ion distribution functions downstream of the solar wind termination shock
ion plasma state solar wind
2009/5/27
In this paper we demonstrate that solar wind ions, passing over the quasiperpendicular portion of the solar wind MHD termination shock, unavoidably develop strongly pronounced pitchangle anisotropies....
