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Related papers: Proton Cyclotron Waves Upstream from Mars: Observa…

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Long-period radio transients (LPRTs) are highly polarised, coherent radio sources with periods of minutes to hours and bursts typically lasting 10 to 100 s. Here we consider the apparently isolated subclass of LPRTs and argue that electron…

High Energy Astrophysical Phenomena · Physics 2026-02-18 Lilia Ferrario

The Planck collaboration has measured the temperature and polarization of the cosmic microwave background well enough to determine the locations of eight peaks in the temperature (TT) power spectrum, five peaks in the polarization (EE)…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-27 Zhen Pan , Lloyd Knox , Brigid Mulroe , Ali Narimani

A method for recognizing the types of linear acoustic gravity waves (AGWs) in the atmosphere from satellite measurements is proposed. It is shown that the polarization relations between fluctuations of wave parameters (velocity, density,…

Atmospheric and Oceanic Physics · Physics 2022-01-05 Yu. O. Klymenko , A. K. Fedorenko , E. I. Kryuchkov , O. K. Cheremnykh , A. D. Voitsekhovska , Yu. O. Selivanov

Waves are thought to play a significant role in the heating of the solar atmosphere and the acceleration of the wind. Among the many types of waves observed in the Sun, the so-called p-modes with a 3 mHz frequency peak dominate the lower…

August 1 to November 15, 2016 period was characterized by the presence of Corotating Interaction Regions (CIRs) and a few weak Coronal Mass Ejections (CMEs) in the heliosphere. In this study we show recurrent energetic electron and proton…

Solar and Stellar Astrophysics · Physics 2020-10-12 C. Krishnaprasad , Smitha V. Thampi , Anil Bhardwaj , Christina O. Lee , K. Kishore Kumar , Tarun K. Pant

The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions…

Astrophysics · Physics 2010-12-13 Matthew G. Baring , Errol J. Summerlin

It is crucial to know the polarization properties of coherent radio waves that escape from pulsar polar caps to calculate the radiative transfer through the magnetosphere and to predict observable radio properties. We describe pair cascades…

High Energy Astrophysical Phenomena · Physics 2026-03-25 Jan Benáček , Axel Jessner , Martin Pohl , Tatiana Rievajová , Lucy S. Oswald

The dielectric permeability tensor for spin polarized plasmas derived in terms of the spin-1/2 quantum kinetic model in six-dimensional phase space in Part I of this work is applied for study of spectra of high-frequency transverse and…

Plasma Physics · Physics 2017-03-08 Pavel A. Andreev

We use the cyclotron-maser theory to explain the core emission from the magnetosphere of pulsars. As a kind of direct and efficient maser type of emission, it can give rise to escaping radiation with extremely high brightness temperature…

Astrophysics · Physics 2009-10-30 Chun-yu Ma , Ding-yi Mao , De-yu Wang , Xin-ji Wu

The chaotic interaction between electrons and whistler mode waves has been shown to provide a mechanism for enhanced diffusion in phase space. Pitch angle diffusion is relevant for the scattering of electrons into the loss cones, thus…

Space Physics · Physics 2007-05-23 W J Wykes , S. C. Chapman , G. Rowlands

Recently, Imaging Ultraviolet Spectrograph (IUVS) on-board Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite observed CO$^+$ first-negative band limb emission in the Martian upper atmosphere. We aim to explore the photochemical…

Earth and Planetary Astrophysics · Physics 2020-07-08 Susarla Raghuram , Anil Bhardwaj

We show the evidence of ion-cyclotron dissipation mechanism in solar wind plasma using Helios data. From our statistical analysis we found that the wave power of high-frequency transverse waves (having frequencies between 0.01 and 1…

Solar and Stellar Astrophysics · Physics 2010-09-27 Sofiane Bourouaine , Eckart Marsch , Fritz M. Neubauer

Recent core-collapse supernova (CCSN) simulations have predicted several distinct features in gravitational-wave (GW) spectrograms, including a ramp-up signature due to the g-mode oscillation of the proto-neutron star (PNS) and an excess in…

High Energy Astrophysical Phenomena · Physics 2018-11-14 Hajime Kawahara , Takami Kuroda , Tomoya Takiwaki , Kazuhiro Hayama , Kei Kotake

Electromagnetic ion cyclotron (EMIC) waves are discrete electromagnetic emissions separated by multiple ion gyrofrequencies. Harmonic EMIC waves are defined as waves with a strong electric or magnetic field (or both) at the harmonics of the…

Space Physics · Physics 2024-12-23 Shujie Gu , Xu Liu , Lunjin Chen , Maria Usanova , Zhiyang Xia , Wenyao Gu

We consider ion heating by turbulent Alfven waves (AWs) and kinetic Alfven waves (KAWs) with perpendicular wavelengths comparable to the ion gyroradius and frequencies smaller than the ion cyclotron frequency. When the turbulence amplitude…

Solar and Stellar Astrophysics · Physics 2015-05-14 Benjamin D. G. Chandran , Bo Li , Barrett N. Rogers , Eliot Quataert , Kai Germaschewski

Solar wind ions are observed to be heated in the directions perpendicular to the large-scale magnetic field, with preferential heating given to heavy ions. In the solar corona, this heating may be responsible for the generation of the wind…

Space Physics · Physics 2020-10-14 Philip A. Isenberg , Bernard J. Vasquez

Correlations are studied between the power density of transverse waves having frequencies between $0.01$ and $1$ normalized to the proton gyrofrequency in the plasma frame and the ratio of the perpendicular and parallel temperature of the…

Solar and Stellar Astrophysics · Physics 2010-08-04 Sofiane Bourouaine , Eckart Marsch , Fritz M. Neubauer

In this paper we investigate spectral and phase coherence properties of magnetic fluctuations in the vicinity of the spectral transition from large, magnetohydrodynamic (MHD) to sub-ion scales using in-situ measurements of the Wind…

Solar and Stellar Astrophysics · Physics 2016-06-15 Sonny Lion , Olga Alexandrova , Arnaud Zaslavsky

This observational study demonstrates that the magnitude and location of energization of electrons in the Martian magnetosheath is more complex than previous studies suggest. Electrons in Mars's magnetosheath originate in the solar wind and…

Space Physics · Physics 2021-05-05 K. Horaites , L. Andersson , S. J. Schwartz , S. Xu , D. L. Mitchell , C. Mazelle , J. Halekas , J. Gruesbeck

Polarization measurements provide strong constraints on models for emission from rotation-powered pulsars. We present multiwavelength polarization predictions showing that measurements over a range of frequencies can be particularly…

High Energy Astrophysical Phenomena · Physics 2017-05-24 Alice K. Harding , Constantinos Kalapotharakos