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In this paper, we calculate the frequencies of geodesic orbits in self-dual spacetime on the equatorial plane and obtain the leading-order effects of loop quantum parameters $P$ on the energy flux and angular momentum flux in eccentric…

General Relativity and Quantum Cosmology · Physics 2024-10-17 Yunlong Liu , Xiangdong Zhang

Electromagnetic whistler-mode waves are a natural emission in the outer radiation belt and the Earth's magnetotail. The resonant interaction of these waves and energetic electrons are responsible for electron acceleration and losses, thus…

It is shown that induced Raman scattering of electromagnetic waves in the strongly magnetized electron-positron plasma of pulsar magnetosphere may be important for wave propagation and as an effective saturation mechanism for…

Astrophysics · Physics 2009-10-30 Maxim Lyutikov

Thermal radiation from bulk disorderly placed nonresonant emitters is incoherent, broadband and isotropic. In an external magnetic field the thermal radiation from any source is circularly polarized. Here we propose a thermal radiation…

Optics · Physics 2018-12-26 S. A. Dyakov , V. A. Semenenko , N. A. Gippius , S. G. Tikhodeev

1.5D Particle-In-Cell simulations of a hot, low density electron beam injected into magnetized, maxwellian plasma were used to further explore the alternative non-gyrotropic beam driven electromagnetic emission mechanism, first studied in…

Solar and Stellar Astrophysics · Physics 2014-04-07 Roman Pechhacker , David Tsiklauri

Ion Cyclotron Emission (ICE) is a ubiquitous magnetised plasma phenomenon previously detected on virtually all large magnetic fusion devices and whose diagnostic potential for future power plants rests upon an accurate mapping of plasma…

Plasma Physics · Physics 2026-05-19 Ethan Attwood , J. W. S. Cook , Peter Hill

Magneto-Coriolis (QG-MC) waves are considered an important part of the rapid dynamics of the Earth's outer core. The detailed characteristics of these waves are however still under scrutiny. In this study we explore the sensibility of the…

Geophysics · Physics 2025-05-09 Olivier Barrois , Julien Aubert

The swirling-Kerr black hole is a novel solution of vacuum general relativity and has an extra swirling parameter characterizing the rotation of spacetime background. We have studied the gravitational waves generated by extreme mass ratio…

General Relativity and Quantum Cosmology · Physics 2025-12-11 Yuhang Gu , Songbai Chen , Jiliang Jing

Sunquakes are the surface signatures of acoustic waves in the Sun's interior that are produced by some but not all flares and coronal mass ejections (CMEs). This paper explores a mechanism for sunquake generation by the magnetic field…

Solar and Stellar Astrophysics · Physics 2018-04-11 Alexander J. B. Russell , Michaela K. Mooney , James E. Leake , Hugh S. Hudson

Relic gravitational waves (GWs) can be produced by primordial magnetic fields. However, not much is known about the resulting GW amplitudes and their dependence on the details of the generation mechanism. Here we treat magnetic field…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-23 Axel Brandenburg , Yutong He , Tina Kahniashvili , Matthias Rheinhardt , Jennifer Schober

The conversion of gravitational to electromagnetic waves in the presence of background magnetic fields is known as the inverse Gertsenshtein effect, analogous to the Primakoff effect for axions. Rephrasing this conversion as a classical…

General Relativity and Quantum Cosmology · Physics 2025-07-23 Valerie Domcke , Camilo Garcia-Cely , Sung Mook Lee

Extreme mass-ratio inspirals (EMRIs) are expected to have considerable eccentricity when emitting gravitational waves (GWs) in the LISA band. Developing GW templates that remain phase accurate over these long inspirals requires the use of…

General Relativity and Quantum Cosmology · Physics 2023-10-25 Benjamin Leather , Niels Warburton

Magnetic reconnection (MR) in Earth's magnetotail is usually followed by a systemwide redistribution of explosively released kinetic and thermal energy. Recently, multispacecraft observations from the THEMIS mission were used to study…

Earth and Planetary Astrophysics · Physics 2014-11-20 Z. Voros , M. P. Leubner , A. Runov , V. Angelopoulos , W. Baumjohann

Ion pickup at the outer planets' active moons is a fundamental plasma process in which newly ionized particles from moon exospheres interact with the ambient corotating plasma and are accelerated to match the background flow. Spacecraft…

Space Physics · Physics 2026-04-14 Xin An , Miranda Chang , Hao Cao , Vassilis Angelopoulos , Anton Artemyev

We investigate the emission of electromagnetic waves from biaxial subwavelength metamaterials. For tunable anisotropic structures that exhibit a vanishing dielectric response along a given axis, we find remarkable variation in the launch…

Optics · Physics 2011-08-24 Klaus Halterman , Simin Feng , Viet Cuong Nguyen

Pulsars emit beams of radiation that reveal the extreme physics of neutron star magnetospheres. Yet, their understanding remains incomplete. Recent global Particle-in-Cell (PIC) simulations have raised several questions that led us to…

High Energy Astrophysical Phenomena · Physics 2026-05-21 Ioannis Contopoulos , Jerome Petri , Ioannis Dimitropoulos

electromagnetic field distributions are found for frequencies slightly under one hundred giga Hertz, using a left handed substrate in a microstrip guided wave structure

Materials Science · Physics 2007-05-23 Clifford M. Krowne , Maurice Daniel

Spacecraft observations of high-energy electron flux enhancement up to 125 keV at Earth's magnetopause are typically linked to the magnetic reconnection. Here, we report the first ever observation of prolonged electron flux enhancement…

Space Physics · Physics 2024-12-05 Shubhangi Lagad , Amar Kakad , Bharati Kakad

We present the first observations of large amplitude waves in a well-defined electron diffusion region at the sub-solar magnetopause using data from one THEMIS satellite. These waves identified as whistler mode waves, electrostatic solitary…

Binary systems emit gravitational waves in a well-known pattern; for binaries in circular orbits, the emitted radiation has a frequency that is twice the orbital frequency. Systems in eccentric orbits, however, emit gravitational radiation…

Cosmology and Nongalactic Astrophysics · Physics 2015-04-13 E. F. D. Evangelista , J. C. N. de Araujo