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Type III radio bursts are radio emissions associated with solar flares. They are considered to be caused by electron beams traveling from the solar corona to the solar wind. Magnetic reconnection is a possible accelerator of electron beams…

Plasma Physics · Physics 2021-03-17 Xin Yao , Patricio A. Muñoz , Jörg Büchner , Xiaowei Zhou , Siming Liu

Ionic liquid ion sources are a promising technology that can be used for many applications from space propulsion to focused ion beam microetching. Ionic liquid ion sources produce ion beams by extracting single ions and metastable solvated…

Chemical Physics · Physics 2021-11-17 Madeleine Schroeder

The high cadence plasma, electric, and magnetic field measurements by the Magnetospheric MultiScale spacecraft allow us to explore the near-Earth space plasma with an unprecedented time and spatial resolution, resolving electron-scale…

By analysing a database of 26 years of observations of Jupiter with the Nancay Decameter Array, we unambiguously identify the radio emissions caused by the Ganymede-Jupiter interaction. We study the energetics of these emissions via the…

Earth and Planetary Astrophysics · Physics 2018-10-17 P. Zarka , M. S. Marques , C. Louis , V. B. Ryabov , L. Lamy , E. Echer , B. Cecconi

By analogy to Jovian radio emissions powered by the electromagnetic interaction between Jupiter and its moons, we propose that close magnetic-nonmagnetic white-dwarf pairs and white-dwarf planetary systems are strong radio sources. A simple…

Astrophysics · Physics 2009-11-07 Andrew J. Willes , Kinwah Wu

We report the application of the time gated ion microscopy technique in accessing online the position of the source of harmonics generated in atomic gas media. This is achieved by mapping the spatial extreme-ultraviolet (XUV)-intensity…

Beyond reionization epoch cosmic hydrogen is neutral and can be directly observed through its 21 cm line signal. If dark matter (DM) decays or annihilates the corresponding energy input affects the hydrogen kinetic temperature and ionized…

Astrophysics · Physics 2008-11-26 M. Valdes , A. Ferrara , M. Mapelli , E. Ripamonti

Orbiting $\gamma$-detectors combined with the magnetic field of the Earth or the Sun can work parasitically as cosmic axion telescopes. The relatively short field lengths allow the axion-to-photon conversion to be coherent for $m_{axion}…

Astrophysics · Physics 2009-10-30 K. Zioutas , D. J. Thompson , E. A. Paschos

The current detectors of gamma-ray emission specially at TeV energies have too poor resolution to determine whether this emission is produced in the jet or in the core, particularly of low luminous, non-blazar AGNs (like radio galaxies). In…

High Energy Astrophysical Phenomena · Physics 2016-10-28 Behrouz Khiali , Elisabete M. de Gouveia Dal Pino , Hélène Sol

Starting from first principles of wave propagation, we consider a multiple-input multiple-output (MIMO) representation of a communication system between two spatially-continuous volumes. This is the concept of holographic MIMO…

Signal Processing · Electrical Eng. & Systems 2022-09-30 Luca Sanguinetti , Antonio A. D'Amico , Merouane Debbah

Dynamical mean-field theory (DMFT) is a non-perturbative technique for the investigation of correlated electron systems. Its combination with the local density approximation (LDA) has recently led to a material-specific computational scheme…

Strongly Correlated Electrons · Physics 2009-11-10 D. Vollhardt , K. Held , G. Keller , R. Bulla , Th. Pruschke , I. A. Nekrasov , V. I. Anisimov

Triggered ion-acoustic waves are a pair of coupled waves observed in the previously unexplored plasma regime near the Sun. They may be capable of producing important effects on the solar wind. Because this wave mode has not been observed or…

Solar and Stellar Astrophysics · Physics 2023-07-05 Forrest Mozer , Stuart Bale , Paul Kellogg , Orlando Romeo , Ivan Vasko , Jaye Verniero

We use the observational data in radio, optical and X-ray wavebands, for a sample of active galactic nuclei (AGNs) with measured black hole masses, to explore the origin of radio emission from nearby low-luminosity active galactic nuclei…

Astrophysics · Physics 2008-11-26 Qingwen Wu , Xinwu Cao

We propose a new approach towards determining the distribution of mechanical and acoustic wave energy in complex built-up structures. The technique interpolates between standard Statistical Energy Analysis (SEA) and full ray tracing…

Chaotic Dynamics · Physics 2009-11-13 Gregor Tanner

Recent observations of high ionization rates of molecular hydrogen in diffuse interstellar clouds point to a distinct low-energy cosmic-ray component. Supposing that this component is made of nuclei, two models for the origin of such…

High Energy Astrophysical Phenomena · Physics 2013-05-23 H. Benhabiles-Mezhoud , J. Kiener , V. Tatischeff , A. W. Strong

1.5D PIC, relativistic, fully electromagnetic (EM) simulations are used to model EM wave emission generation in the context of solar type III radio bursts. The model studies generation of EM waves by a super-thermal, hot beam of electrons…

Solar and Stellar Astrophysics · Physics 2011-06-10 D. Tsiklauri

A number of fast-rotating ultra cool dwarfs (UCDs) emit pulsed coherent radiation, attributed to the electron cyclotron maser instability, a phenomenon that occurs in the solar system at planets with strong auroral emission. In this paper…

Solar and Stellar Astrophysics · Physics 2017-08-02 Sam Turnpenney , Jonathan Nichols , Graham Wynn , Sarah Casewell

We present a novel search for dark photon dark matter (DM) using terrestrial magnetic field measurements at frequencies below 100 Hz. Coherently oscillating dark photon DM can induce a monochromatic magnetic field via kinetic mixing with…

High Energy Physics - Phenomenology · Physics 2026-05-12 Kimihiro Nomura , Atsushi Nishizawa , Atsushi Taruya , Yoshiaki Himemoto

Solar coronal shocks are very common phenomena in the solar atmosphere and are believed to be the drivers of solar type II radio bursts. However, the microphysical nature of these emissions is still an open problem. This paper proposes that…

Solar and Stellar Astrophysics · Physics 2015-06-19 G. Q. Zhao , L. Chen , D. J. Wu

We present the results from the study of the resolved distribution of cold molecular gas around eight young (<10^6 yr), peaked-spectrum radio galaxies. This has allowed us to trace the interplay between the radio jets and the surrounding…

Astrophysics of Galaxies · Physics 2023-03-01 Raffaella Morganti , Suma Murthy , Pierre Guillard , Tom Oosterloo , Santiago Garcia-Burillo
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