搜索结果: 106-120 共查到“知识库 宇宙线物理学”相关记录259条 . 查询时间(4.8 秒)
Accretion Disks Around Binary Black Holes: A Quasistationary Model
Accretion Disks Binary Black Holes Quasistationary Model
2010/12/20
Tidal torques acting on a gaseous accretion disk around a binary black hole can create a gap in the disk near the orbital radius. At late times, when the binary inspiral timescale due to gravitational...
Space-Time Compactification, Non-Singular Black Holes, Wormholes and Braneworlds via Lightlike Branes
Space-Time Compactification Non-Singular Black Holes Wormholes and Braneworlds Lightlike Branes
2010/12/21
We describe a concise general scheme for constructing solutions of Einstein-Maxwell-Kalb-Ramond gravity-matter system in bulk space-time interacting selfconsistently with one or more (widely separated...
Observational Constraints on Interacting Model of New Agegraphic Dark Energy and Alleviation of Cosmic Age Problem
Interacting Model New Agegraphic Dark Energy Alleviation of Cosmic Age Problem
2010/12/21
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...
String Cosmology in LRS Bianchi Type-II Dusty Universe with Time Decaying Vacuum Energy Density $\Lambda$
LRS Bianchi type II models Nambu String Massive string
2010/12/21
A model of a cloud formed by massive strings is used as a source of LRS Bianchi type II with time decaying vacuum energy density . To construct string cosmological models we have used the energy-mome...
Hawking-like radiation from evolving black holes and compact horizonless objects
Hawking radiation adiabatic quantum gravity black holes spacetime singularities horizons null infinity
2010/12/20
Usually, Hawking radiation is derived assuming (i) that a future eternal event horizon
forms, and (ii) that the subsequent exterior geometry is static.
Perturbative stability of SFT-based cosmological models
Perturbative stability SFT-based cosmological models
2010/12/21
We review the appearance of multiple scalar fields in linearized SFT based cosmological
models with a single non-local scalar field. Some of these local fields are canonical
real scalar fields and s...
Charged fermions tunneling from accelerating and rotating black holes
Charged fermions accelerating black holes
2010/12/21
We study Hawking radiation of charged fermions from accelerating and rotation black holes with electric and magnetic charges. We calculate the tunneling probabilities of incoming and outgoing fermioni...
We consider an analytic way to make the interacting N-body problem tractable by using harmonic oscillators in place of the relevant two-body interactions.
Puzzles of Dark Matter - More Light on Dark Atoms?
Puzzles Dark Matter - More Light Dark Atoms
2011/1/5
Positive results of dark matter searches in experiments DAMA/NaI and DAMA/LIBRA confronted with results of other groups can im-ply nontrivial particle physics solutions for cosmological dark mat-ter.
We describe the gated bilayer graphene system when it is subjected to intense terahertz frequency electromagnetic radiation. We examine the electron band structure and density of states via exact diag...
Slowly rotating charged black holes in anti-de Sitter third order Lovelock gravity
charged black holes anti-de Sitter third order Lovelock gravity
2010/12/20
In this paper, we study slowly rotating black hole solutions in Lovelock gravity (n = 3). These exact slowly rotating black hole solutions are obtained in uncharged and charged cases, respectively.
Schwarzschild-de Sitter black hole from entropic viewpoint
Schwarzschild-de Sitter space Unruh-Verlinde temperature entropic force
2010/12/21
In a Schwarzschild-de Sitter space, we consider an equipotential surface which consists of two holographic screens. Adapting the Bousso-Hawking's reference point of vanishing force, we divide the spac...
Plane-symmetric spacetimes with positive cosmological constant. The case of stiff fluids
Plane-symmetric spacetimes positive cosmological constant stiff fluids
2010/12/20
We consider plane-symmetric spacetimes satisfying Einstein’s field equations with positive cosmological constant, when the matter is a fluid whose pressure is equal to its mass-energy density (i.e. a ...
The path-integral formulation of quantum cosmology with a massless scalar field as a sum-over-histories of volume transitions is discussed, with particular but non-exclusive reference to loop quantum ...
Low-Temperature Dependences of the Polarization of Terahertz Emission from $n$-Germanium in Heating Electric Fields
Low-Temperature Dependences Polarization of Terahertz Emission Heating Electric Fields
2010/11/19
As was noted in [3], in order to verify the assumption that the behavior of the polarization dependences of the terahertz emission by hot electrons from 𝑛-Ge is determined by the type of carri...