Abstract In this paper, we investigate the phenomenon of accelerated cosmic expansion in late universe and mass accretion process for a four-dimensional Einstein-Aether black hole. Starting with basics gravity theory, first consider field equations two well-known models Chaplygin gas, i.e., generalized gas model viscous modified model. We then obtain energy density Hubble parameter these terms various dimensionless parameters some unknown parameters. After finding required parameters,...

Abstract In the astrophysical universe, falling matter accretion around black hole is becoming an engrossing chapter. Our present manuscript reveals onto acoustic-charged in background of Gross–Pitaevskii theory. This type popular to several researchers. Following Hamiltonian dynamics, we go through process face cosmological mechanism. Depending on tuning parameter $$\xi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>ξ</mml:mi> </mml:math> this hole, formulate sonic...

Abstract Black holes, one of the greatest enigmas our Universe, are challenging to decipher. This work is dedicated observing changes in mass a non-singular black hole with evolution Universe generalized Rastall gravity framework, considering effects parameter constraining. We examine two recently developed dynamical dark-energy equation state parameterization models: Chaudhary-Bouali-Debnath-Roy-Mustafa-type (CBDRM) and Chaudhary-Debnath-Mustafa-Maurya-Atamurotov-type (CDMMA)...

Herein, we have discussed about the accretion of two extremely interesting forms dark energies, namely “Modified Chaplygin–Jacobi Gas” (MCJG) and Chaplygin–Abel (MCAG) onto a Schwarzschild black hole dimension 4. First, considering above-mentioned deduced rate change mass then evolved required from it in terms redshift [Formula: see text]. We also plotted versus graphs for different values elliptic modulus text] case MCJG MCAG, respectively. Also, been portrayed stages FRW universe. found...

The scaling behavior of the Portevin--Le Chatelier (PLC) effect was studied by deforming an $\mathrm{A}\mathrm{l}\mathrm{\text{\ensuremath{-}}}2.5%\mathrm{M}\mathrm{g}$ alloy for a wide range strain rates. To reveal exact nature, time series data true stress versus time, obtained during deformation, were analyzed two complementary methods: finite variance method and diffusion entropy analysis. From these analyses we could establish that, in entire span rates, PLC showed Levy-walk property.

The complexity of the Portevin-Le Chatelier effect in Al-2.5%Mg polycrystalline samples subjected to uniaxial tensile tests is quantified. Multiscale entropy analysis carried out on stress time series data observed during jerky flow quantify distinct spatiotemporal dynamical regimes. It shown that for static type C band, very low all scales compared hopping B and propagating A bands. results are interpreted considering length relevant effect.

In the Horava Lifshitz gravity scenario, we have described mass accretion process of a 4 dimensional Kehagias Sfetsos black hole caused by some candidates dark energy in detail. Firstly, obtained equation for with respect to cosmic scale parameter framework. Then, one one, considered energies like Generalized Cosmic Chaplygin gas, Variable Modified New Jacobi and Abel respectively, established their terms redshift function z. addition, presented results graphical representations functions....

Black holes, one of the greatest enigmas our Universe, are usually quite challenging to decipher. This work is dedicated observing changes in mass a non-singular black hole with evolution Universe generalized Rastall gravity framework when we consider effects parameter constraining on it. We examined two recently developed dynamical dark-energy models~:~Chaudhary-Bouali-Debnath-Roy-Mustafa-type parameterization~and~Chaudhary-Debnath-Mustafa-Maurya-Atamurotov-type parameterization. Starting...

In this paper, we have investigated the phenomenon of accelerated cosmic expansion in late universe and mass accretion process a 4-dimensional Einstein-Aether black hole. Starting with basics gravity theory, first considered field equations two eminent models Chaplygin gas, viz. generalized gas model viscous modified model. Then, obtained energy density Hubble parameters for these terms some dimensionless unknown parameters. After finding required parameters, proceeded process. For both...

A Reply to the Comment by Christopher R. Weinberger.Received 12 April 2010DOI:https://doi.org/10.1103/PhysRevLett.105.099602© 2010 The American Physical Society

This work highlights the effect of proton irradiation in presence preexisting defects Nb-1Zr-0.1C alloy. To introduce initial defects, alloy was subjected to cold rolling (10% and 20%) prior irradiation. Characterization irradiated material performed using detailed X-ray diffraction line profile analyses. The results, terms various microstructural parameters, revealed that these materials act as effective sinks for irradiation-induced during

The complexity of the Portevin-Le Chatelier effect in Al-2.5%Mg polycrystalline samples subjected to uniaxial tensile tests is quantified. Multiscale entropy analysis carried out on stress time series data observed during jerky flow quantify distinct spatiotemporal dynamical regimes. It shown that for static type C band, very low all scales compared hopping B and propagating A bands. results are interpreted considering length relevant effect.

In this paper study of cavity and window has been carried out using Ansoft HFSS for Terahertz Gyrotron. Eigen mode analysis the at 1THz. An idea about operating modes in Gyrotron obtained simulated frequency field pattern modes. The design 1 THz also HFSS. results have compared with CST microwave studio.

Plastic deformation of crystals is a physical phenomenon, which has immensely driven the development human civilisation since onset Chalcolithic period. This process primarily governed by motion line defects, called dislocations. Each dislocation traps quantum plastic expressible in terms its Burgers vector[1,2]. Theorising mechanisms at atomistic scales length and time remains challenging task on account extreme complexities associated with dynamics. We present new concept modelling moving...

Tensile tests were carried out by deforming polycrystalline samples of an interstitial alloy, low carbon steel at room temperature in a wide range strain rates where the Portevin-Le Chatelier (PLC) effect was observed. The observed stress time series data analyzed using nonlinear dynamical methods. From analyses, we could establish presence marginal deterministic chaos PLC steel. Moreover, made comparative study this alloy with substitutional Al-Mg which shows that dynamics is more complex...