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Pressure support versus thermal broadening in the Lyman alpha forest - I. Effects of the equation of state on longitudinal structure
low-density intergalactic gas temperature
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2014/12/22
In the low-density intergalactic medium that gives rise to the Lyman α (Lyα) forest, gas temperature and density are tightly correlated. The velocity scale of thermal broadening and the Hubble flow ac...
Equation of State for Dark Energy in Modified Gravity Theories
Modified theories of gravity Dark energy Cosmology
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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...
Modeling of the subgrid-scale term of the filtered magnetic field transport equation
the subgrid-scale term the filtered magnetic field
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2011/1/11
Accurate subgrid-scale turbulence models are needed to perform realistic numerical magnetohydrodynamic (MHD) simulations of the subsurface flows of the Sun. To perform large-eddy simulations (LES) of ...
Generalizing the Cosmic Energy Equation
Generalizing Cosmic Energy Equation
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2011/1/13
We generalize the cosmic energy equation to the case when massive particles interact via a modified gravitational potential of the form phi(a, r), which is allowed to explicitly depend upon the cosmo...
Distinguishability of scalar field models of dark energy with time variable equation of state parameter
cosmology dark energy–scalar field cosmic microwave background
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2010/11/16
The possibility of distinguishing of scalar field models of dark energy with different Lagrangians and time variable equation of state parameter by available observational data is analyzed. The mul-ti...
Simultaneous solution of Kompaneets equation and Radiative Transfer equation in the photon energy range 1 - 125 KeV
Diffuse radiation'Kompaneets equation radiative transfer X-rays
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2010/11/12
Radiative transfer equation in plane parallel geometry and Kompaneets equa-tion is solved simultaneously to obtain theoretical spectrum of 1-125 KeV photon energy range. Diffuse radiation field is cal...
Equation of state for dark energy in $f(T)$ gravity
Equation of state dark energy
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2010/11/10
We study the cosmological evolutions of the equation of state for dark energy wDE in the expo-
nential and logarithmic as well as their combination f(T) theories. We show that the crossing of the pha...
Equation of state for the MCFL phase and its implications for compact star models
High Energy Astrophysical Phenomena (astro-ph.HE)
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2011/1/5
Using the solutions of the gap equations of the magnetic-color-flavor-locked (MCFL) phase of paired quark matter in a magnetic field, and taking into consideration the separation between the longitudi...
Generalized equation of state for cold superfluid neutron stars
High Energy Astrophysical Phenomena (astro-ph.HE)
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2010/12/24
Mature neutron stars are expected to contain various kinds of superfluids in their interiors. Modeling such stars requires the knowledge of the mutual entrainment couplings between the different conde...
Global causal propagator for the Klein-Gordon equation on a class of supersymmetric AdS backgrounds
Klein-Gordon equation supersymmetric AdS backgrounds spectral-theoretic techniques
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2010/3/19
We analyze the Cauchy problem for the Klein-Gordon equation on the type IIB supergravity backgrounds $AdS^5 \times Y^{p,q}$, where $Y^{p,q}$ is any of the Sasaki-Einstein 5-manifolds recently discover...
Modification of Field Equation and Natural Solution to cosmological problems
Background Coordinates Standard coordinates
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2015/5/29
The present article has systematically solved the problem of galaxy formation and some significant cosmological puzzles. First a mistake with Einstein’s equation of gravitational field is corrected, n...
Homotopy Continuation Method of Arbitrary Order of Convergence for Solving the Hyperbolic Form of Kepler’s Equation
Homotopy method hyperbolic Kepler’s equation initial value problem orbit determination
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2009/5/12
In this paper, an efficient iterative method of arbitrary integer
order of convergence ≥ 2 has been established for solving the hyperbolic
form of Kepler’s equation. The method is of a dynamic natur...
Homotopy Continuation Method of Arbitrary Order of Convergence for Solving the Hyperbolic Form of Kepler’s Equation
hyperbolic Kepler’s equation initial value problem orbit determination
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2010/9/16
In this paper, an efficient iterative method of arbitrary integer order of convergence ≥ 2 has been established for solving the hyperbolic form of Kepler’s equation. The method is of a dynamic nature ...
Solutions for Klein-Gordon Equation in Randall-Sundrum-Kerr Scenario
Klein-Gordon Equation Randall-Sundrum-Kerr Scenario
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2010/10/18
We study the scalar perturbations of rotating black holes in framework of extra dimensions type Randall-Sundrum(RS).