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200 papers

Grasers based on a stimulated emission of gravitational radiation by relativistic charged particle beams in external fields and on a conversion of laser radiation into gravitational one in the magnetic fields as well as detectors are…

Classical Physics · Physics 2007-05-23 E. G. Bessonov

We compute the energy spectra of the gravitational signals emitted when a pointlike mass moves on a closed orbit around a non rotating neutron star, inducing a perturbation of its gravitational field and its internal structure. The Einstein…

General Relativity and Quantum Cosmology · Physics 2009-11-07 L. Gualtieri , E. Berti , J. A. Pons , G. Miniutti , V. Ferrari

We perform 2D and 3D kinetic simulations of reconnection-mediated turbulent flares in a magnetized electron-positron plasma, with weak and strong radiative cooling. Such flares can be generated around neutron stars and accreting black…

High Energy Astrophysical Phenomena · Physics 2021-11-17 J. Nättilä , A. M. Beloborodov

Radiative multipole moments of scalar, electromagnetic, and linearized gravitational fields in Schwarzschild spacetime are computed to third order in v in a weak-field, slow-motion approximation, where v is a characteristic velocity…

General Relativity and Quantum Cosmology · Physics 2011-04-21 Stephen W. Leonard , Eric Poisson

We analyze the propagation of gravitational waves in a medium containing bounded subsystems ("molecules"), able to induce significant Macroscopic Gravity effects. We establish a precise constitutive relation between the average quadrupole…

General Relativity and Quantum Cosmology · Physics 2019-07-26 Giovanni Montani , Fabio Moretti

An alternative description of quantum scattering processes rests on inhomogeneous terms amended to the Schroedinger equation. We detail the structure of sources that give rise to multipole scattering waves of definite angular momentum, and…

Quantum Physics · Physics 2007-05-23 Christian Bracher , Tobias Kramer , Manfred Kleber

The time dependent Schrodinger equation inclusive of curvature effects is developed for a spinless electron constrained to motion on a toroidal surface and subjected to circularly polarized and linearly polarized waves in the microwave…

Classical Physics · Physics 2007-05-23 M. Encinosa , M. Jack

We consider a Dirac one-electron atom placed in a weak, static, uniform magnetic field. We show that, to the first order in the strength $B$ of the perturbing field, the only electric multipole moment induced by the field in the ground…

Atomic Physics · Physics 2016-06-30 Radosław Szmytkowski , Patrycja Stefańska

The radiative acceleration of particles and the electrostatic potential fields that arise in low density plasmas hit by radiation produced by a transient, compact source are investigated. We calculate the dynamical evolution and asymptotic…

Astrophysics · Physics 2009-11-07 L. Zampieri , R. Turolla , L. Foschini , A. Treves

The spatial-dependent propagation model has been successfully used to explain diverse observational phenomena, including the spectral hardening of cosmic-ray nuclei above $200$ GV, the large-scale dipole anisotropy and the diffusive gamma…

High Energy Astrophysical Phenomena · Physics 2020-08-26 Zhen Tian , Wei Liu , Bo Yang , Xue-Dong Fu , Hai-Bo Xu , Yu-hua Yao , Yi-Qing Guo

We analyze the general radiation emission mechanism from a charged particle moving in a curved inhomogeneous magnetic field. The consideration of the gradient makes the curved vacuum magnetic field compatible with the Maxwell equations and…

Astrophysics · Physics 2009-11-07 T. Harko , K. S. Cheng

Scintillation materials convert high-energy radiation to optical light through a complex multi-stage process. The last stage of the process is light emission via spontaneous emission, which usually governs and limits the scintillator…

We address the issue of gravitational radiation in the context of the Bondi-Sachs space-time, and consider the expression for the gravitational energy of the radiation obtained in the realm of the teleparallel equivalent of general…

General Relativity and Quantum Cosmology · Physics 2024-10-11 J. W. Maluf , F. Lessa Carneiro , S. C. Ulhoa , J. F. da Rocha-Neto

Radiation generated by the passage of a monoenergetic electron bunch above the surface wave excited in plane interface between homogeneous media with different dielectric constants is investigated. For the surface wave of general profile…

Condensed Matter · Physics 2007-05-23 A. A. Saharian , A. R. Mkrtchyan , L. A. Gevorgian , L. Sh. Grigorian , B. V. Khachatryan

We explore elastic scattering of non-relativistic electrons in the form of standard Laguerre-Gaussian (sLG) and elegant Laguerre - Gaussian (eLG) packets on atomic targets in the generalized Born approximation and compare these results to…

Atomic Physics · Physics 2024-04-18 N. Sheremet , A. Chaikovskaia , D. Grosman , D. Karlovets

We consider an exterior electromagnetic field surrounding a rotating star endowed with a dipole magnetic field in the context of general relativity. The analytic solution for a stationary configuration is obtained, and the general…

Astrophysics · Physics 2016-08-30 Kohkichi Konno , Yasufumi Kojima

The relativistic quantum-mechanical description of a charged Laguerre-Gauss beam accelerated in a uniform electric field has been fulfilled. Stationary wave eigenfunctions are rigorously derived. The evolution of the beam parameters during…

Accelerator Physics · Physics 2025-06-24 Qi Meng , Ziqiang Huang , Xuan Liu , Wei Ma , Zhen Yang , Liang Lu , Alexander J. Silenko , Pengming Zhang , Liping Zou

Weibel instability turns out to be the a ubiquitous phenomenon in High-Energy Density environments, ranging from astrophysical sources, e.g., gamma-ray bursts, to laboratory experiments involving laser-produced plasmas. Relativistic…

High Energy Astrophysical Phenomena · Physics 2009-07-22 Mikhail V. Medvedev

Shnoll has investigated the non-Poisson scatter of rate measurements in various phenomena such as biological and chemical reactions, radioactive decay, photodiode current leakage and germanium semiconductor noise, and attributed the scatter…

General Physics · Physics 2013-08-01 David P Rothall , Reginald T Cahill

We study the dynamics of an electron wave packet in a strong constant crossed electromagnetic field with account for radiative corrections due to interaction of the electron with the vacuum fluctuations. We evaluate a wave packet composed…

High Energy Physics - Theory · Physics 2023-06-19 I. Yu. Kostyukov , E. N. Nerush , A. A. Mironov , A. M. Fedotov