We find the nine bulk–flow and shear moments from the SFI++ survey, as well as for subsamples of group and field galaxies. We constrain the velocity power spectrum shape parameter Γ in linear theory using these moments. A likelihood function for Γ was found after marginalizing over the power spectrum amplitude σ8Ω 0.6 m using constraints obtained from comparisons between redshift surveys and pe...

Ring-diagram analysis is a technique of local helioseismology used to infer plasma flows in the solar convection zone which generates intermediate data products known as ring-fitting parameters. Knowing the sensitivity of ringfitting parameters to actual flows in the Sun is important for interpreting these measurements.Working in plane-parallel geometry, we compute the linear sensitivity of rin...

Analyses of peculiar velocity surveys face several challenges, including low signal–to–noise in individual velocity measurements and the presence of small– scale, nonlinear flows. This is the second in a series of papers in which we describe a new method of overcoming these problems by using data compression as a filter with which to separate large–scale, linear flows from small–scale noise tha...

Results are presented for an innovative computational procedure that predicts time-dependent instabilities and deterministic ordered structures in three-dimensional steady-state laminar boundary-layer flows. The flow configuration considered is a corner flow with sidewall surface mass injection into a horizontal boundary-layer flow. The equations for the velocity fluctuations are cast into a sp...

The role of the equation of state for a perfectly conducting, relativistic magnetized fluid is the main subject of this work. The ideal constant Γ-law equation of state, commonly adopted in a wide range of astrophysical applications, is compared with a more realistic equation of state that better approximates the single-specie relativistic gas. The paper focus on three different topics. First, ...

abstract the current study aims to investigate the relationship between iran’s targeted subsidies plan and the stock returns of listed companies on the tehran stock exchange (tse). stock returns is obtained from the indices of three industries: pharmaceuticals, chemicals, and machinery and equipment. moreover, the present research uses gold price and dollar price as control variables. the targe...

We derive the exact relationship, including all non-linearities, between real-space and redshift-space two-point statistics through the pairwise velocity distribution function. We show using numerical simulations that the pairwise velocity PDF is strongly non-Gaussian at all scales, and explain why this is so. We caution that a commonly used ansatz to model the redshift-space power spectrum giv...

We study the entanglement properties of anisotropic open spin one-half Heisenberg chains with a modified central bond. The entanglement entropy between the two half-chains is calculated with the density-matrix renormalization method (DMRG). We find a logarithmic behaviour with an effective central charge c′ varying with the length of the system. It flows to one in the ferromagnetic region and t...

We constrain the velocity power spectrum shape parameter Γ in linear theory using the nine bulk–flow and shear moments estimated from four recent peculiar velocity surveys. For each survey, a likelihood function for Γ was found after marginalizing over the power spectrum amplitude σ8Ω 0.6 m using constraints obtained from comparisons between redshift surveys and peculiar velocity data. In order...