Search Results - "KOCHARYAN, A. A"

On the Lambda-evolution of galaxy clusters by Gurzadyan, V. G., Kocharyan, A. A., Stepanian, A.

“…The evolution of galaxy clusters can be affected by the repulsion described by the cosmological constant. This conclusion is reached within the modified…”
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Smearing of primordial gravitational waves by Samsonyan, M., Kocharyan, A. A., Gurzadyan, V. G.

“…A mechanism for smearing of the primordial gravitational waves during the radiation-dominated phase of the evolution of the Universe is considered. It is shown…”
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S2-star dynamics probing the galaxy core cluster by Galikyan, N., Khlghatyan, Sh, Kocharyan, A. A., Gurzadyan, V. G.

“…The star cluster surrounding the supermassive black hole in the center of Milky Way is probed using the data on the S2 star. The value of precession found at…”
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Neural network analysis of S2-star dynamics: extended mass by Galikyan, N., Khlghatyan, Sh, Kocharyan, A. A., Gurzadyan, V. G.

“…Physics-informed neural network (PINN) analysis of the dynamics of S-stars in the vicinity of the supermassive black hole in the Galactic center is performed…”
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Gravitational waves as waveguides by Kocharyan, A. A., Samsonyan, M., Gurzadyan, V. G.

“…We show that gravitational waves can act as waveguides for electromagnetic radiation, that is, if the latter is initially aligned with the gravitational waves,…”
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Neural network analysis of S-star dynamics: implications for modified gravity by Galikyan, N., Khlghatyan, Sh, Kocharyan, A. A., Gurzadyan, V. G.

“…We studied the dynamics of S-stars in the Galactic center using the physics-informed neural networks. The neural networks are considered for both, Keplerian…”
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Evolution of perturbed dynamical systems: analytical computation with time independent accuracy by Gurzadyan, A. V., Kocharyan, A. A.

“…An analytical method for investigation of the evolution of dynamical systems with independent on time accuracy is developed for perturbed Hamiltonian systems…”
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Cosmic voids and induced hyperbolicity. II. Sensitivity to void/wall scales by Samsonyan, M., Kocharyan, A. A., Stepanian, A., Gurzadyan, V. G.

“…Cosmic voids as typical under-density regions in the large-scale Universe are known for their hyperbolic properties as an ability to deviate the photon beams…”
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Cosmic voids and induced hyperbolicity by Samsonyan, M., Kocharyan, A. A., Stepanian, A., Gurzadyan, V. G.

“…Cosmic voids—the low density regions in the Universe—as characteristic features of the large-scale matter distribution, are known for their hyperbolic…”
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Cosmic voids and induced hyperbolicity. III. Tracing redshift dependence by Samsonyan, M., Kocharyan, A. A., Stepanian, A., Gurzadyan, V. G.

“…The currently released datasets of the observational surveys reveal the redshift dependence of the physical features of cosmic voids. We study the void induced…”
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The cosmological constant vs adiabatic invariance by Khlghatyan, Sh, Kocharyan, A. A., Stepanian, A., Gurzadyan, V. G.

“…The property of adiabatic invariance is studied for the generalized potential satisfying the condition of identity of sphere’s and point mass’s gravity. That…”
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Towards investigation of evolution of dynamical systems with independence of time accuracy: more classes of systems by Gurzadyan, V. G., Kocharyan, A. A.

“…The recently developed method (Paper 1) enabling one to investigate the evolution of dynamical systems with an accuracy not dependent on time is developed…”
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A principal possibility for computer investigation of evolution of dynamical systems independent on time accuracy by Gurzadyan, V. G., Harutyunyan, V. V., Kocharyan, A. A.

“…Extensive N -body simulations are among the key means for the study of numerous astrophysical and cosmological phenomena, so various schemes are developed for…”
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Flat Universe with hyperbolic voids by Gurzadyan, V. G, Kocharyan, A. A

“…The properties of geodesics flow are studied in a Friedmann-Robertson-Walker metric perturbed due to the inhomogeneities of matter. The basic, averaged Jacobi…”
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Morphological and Immunohystochemical Characteristics of Aspirated Thrombi in Patients with ST-Elevation Myocardial Infarction by Sisakian, H S, Mkhitaryan, A G, Sahakyan, V G, Kocharyan, A S, Asatryan, B A

“…The aim of study was to evaluate the morphological and immunohystochemical characteristics of aspirated thrombi in patients with ST-elevation myocardial…”
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Kolmogorov analysis detecting radio and Fermi gamma-ray sources in cosmic microwave background maps by Gurzadyan, V. G, Kashin, A. L, Khachatryan, H. G, Kocharyan, A. A, Poghosian, E, Vetrugno, D, Yegorian, G

“…The Kolmogorov stochasticity parameter is shown to act as a tool to detect point sources in the cosmic microwave background (CMB) radiation temperature maps…”
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Noncomplanarity effects in the one-dimensional spin-dependent scattering by Sahakyan, A. S., Poghosyan, A. V., Kocharyan, A. N., Movsesyan, R. M.

“…The scattering of a spin-polarized quantum wave on a potential barrier is investigated. The vectors of spin-polarization of incident wave and the internal…”
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Somatostatin, a negative-regulator of central leptin action in the rat hypothalamus by Stepanyan, Z, Kocharyan, A, Behrens, M, Koebnick, C, Pyrski, M, Meyerhof, W

“…Leptin-responsive neurons of the hypothalamus constitute a heterogeneous population expressing a vast array of different neuropeptides and neurotransmitters,…”
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S2-star dynamics probing the Galaxy core cluster by Galikyan, N, Khlghatyan, Sh, Kocharyan, A. A, Gurzadyan, V. G

“…Eur. Phys. J. Plus, 139, 821 (2024) The star cluster surrounding the supermassive black hole in the center of Milky Way is probed using the data on the S2…”
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Smearing of primordial gravitational waves by Samsonyan, M, Kocharyan, A. A, Gurzadyan, V. G

“…Eur. Phys. J. Plus, 139, 317 (2024) A mechanism for smearing of the primordial gravitational waves during the radiation-dominated phase of the evolution of the…”
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