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Velocity oscillations "measured" simultaneously at the photosphere and the chromosphere -from time series of spectropolarimetric data in the 10830 A region- of different solar magnetic features allow us to study the properties of wave…

Astrophysics · Physics 2011-02-11 Rebecca Centeno , Manuel Collados , Javier Trujillo Bueno

Slow magnetoacoustic waves in a static background provide a seismological tool to probe the solar atmosphere in the analytic frame. By analyzing the spatiotemporal variation of the electron number density of plume structure in coronal holes…

Solar and Stellar Astrophysics · Physics 2020-09-09 Il-Hyun Cho , Valery M. Nakariakov , Yong-Jae Moon , Jin-Yi Lee , Dae Jung Yu , Kyung-Suk Cho , Vasyl Yurchyshyn , Harim Lee

Propagating slow magneto-acoustic waves are commonly observed in different coronal structures but are most prominent in active region fan loops. Their rapid damping with damping lengths of the order of a wavelength has been investigated in…

Solar and Stellar Astrophysics · Physics 2025-06-09 Suraj K. Tripathy , S. Krishna Prasad , D. Banerjee

Recently, several new solar radio telescopes have been put into operation and provided spectral-imaging observations with much higher resolutions in decimeter (dm) and centimeter (cm) wavelengths. These telescopes include the Mingantu…

Solar and Stellar Astrophysics · Physics 2023-11-27 Baolin Tan , Yihua Yan , Jing Huang , Yin Zhang , Chengming Tan , Xiaoshuai Zhu

Spin waves modes in magnetic waveguides with width down to 320 nm have been studied by electrical propagating spin-wave spectroscopy and micromagnetic simulations for both longitudinal and transverse magnetic bias fields. For longitudinal…

The winds of low-mass stars carry away angular momentum and impact the atmospheres of surrounding planets. Determining the properties of these winds is necessary to understand the mass-loss history of the star and the evolution of…

Solar and Stellar Astrophysics · Physics 2025-03-19 Sanne Bloot , Harish K. Vedantham , Robert D. Kavanagh , Joseph R. Callingham , Benjamin J. S. Pope

Wave propagation phenomena in soils can be experimentally simulated using centrifuge scale models. An original excitation device (drop-ball arrangement) is proposed to generate short wave trains. Wave reflections on model boundaries are…

Classical Physics · Physics 2009-01-26 J. F. Semblat , M. P. Luong

The intermittency of density fluctuations in the solar wind at kinetic scales has been examined using high time resolution Faraday cup measurements from the Spektr-R spacecraft. It was found that the probability density functions (PDFs) of…

Space Physics · Physics 2014-06-23 C. H. K. Chen , L. Sorriso-Valvo , J. Šafránková , Z. Němeček

We present a measurement of the spectral index of density fluctuations between ion and electron scales in solar wind turbulence using the EFI instrument on the ARTEMIS spacecraft. The mean spectral index at 1 AU was found to be -2.75 +/-…

Space Physics · Physics 2012-07-17 C. H. K. Chen , C. S. Salem , J. W. Bonnell , F. S. Mozer , S. D. Bale

Magnetohydrodynamic (MHD) waves, playing a crucial role in transporting energy through the solar atmosphere, manifest in various chromospheric structures. Here, we investigated MHD waves in a long-lasting dark fibril using…

Solar and Stellar Astrophysics · Physics 2024-12-25 Maryam Saberi , Shahin Jafarzadeh , Sven Wedemeyer , Ricardo Gafeira , Mikolaj Szydlarski , David Jess , Marco Stangalini

M dwarf stars are currently the main targets in searches for potentially habitable planets. However, their winds have been suggested to be harmful to planetary atmospheres. Here, in order to better understand the winds of M dwarfs and also…

Solar and Stellar Astrophysics · Physics 2020-04-01 Amanda Mesquita , Aline Vidotto

We motivate the importance of studying kinetic scale turbulence for understanding the macroscopic properties of the heliosphere, such as the heating of the solar wind. We then discuss the technique by which kinetic scale density…

Space Physics · Physics 2013-06-25 C. H. K. Chen , G. G. Howes , J. W. Bonnell , F. S. Mozer , K. G. Klein , S. D. Bale

We report on the properties of type II radio bursts observed by the Radio and Plasma Wave Experiment (WAVES) on board the Wind spacecraft over the past two solar cycles. We confirm that the associated coronal mass ejections (CMEs) are fast…

Solar and Stellar Astrophysics · Physics 2018-10-29 N. Gopalswamy , P. Mäkelä

The dipolar (magnetostatic) interaction dominates the behavior of spin waves in magnetic films in the long-wavelength regime. In an in-plane magnetized film, volume modes exist with a negative group velocity (backward volume magnetostatic…

Mesoscale and Nanoscale Physics · Physics 2021-12-01 F. J. Buijnsters , L. J. A. van Tilburg , A. Fasolino , M. I. Katsnelson

We present a comprehensive statistical study of the radial evolution of solar wind turbulence near Mercury's orbit using long-term magnetic field measurements from the MESSENGER mission. Owing to Mercury's highly elliptical orbit and the…

We present a new MHD wave decomposition method that overcomes the limitations of existing wave identification methods. Our method allows to investigate the energy fluxes in different MHD modes at different locations of the solar atmosphere…

Solar and Stellar Astrophysics · Physics 2022-04-20 N. Yadav , Rony Keppens , B. Popescu Braileanu

Context. Magnetic bright points (MBPs) are one of the smallest manifestations of the magnetic field in the solar atmosphere and are observed to extend from the photosphere up to the chromosphere. As such, they represent an excellent feature…

Solar and Stellar Astrophysics · Physics 2024-09-19 Arthur Berberyan , Peter H. Keys , David B. Jess , Damian J. Christian

Here we study the nature and characteristics of waves propagating in partially ionised plasmas in the weakly ionised limit, typical for the lower part of the solar atmosphere. The framework in which the properties of waves are discussed…

Solar and Stellar Astrophysics · Physics 2022-03-02 A. Alharbi , I. Ballai , V. Fedun , G. Verth

In this paper, we present for the first time a comprehensive statistical study between type II radio bursts from the metric (m) to the dekameric-hectometric (DH) domain and their associated solar and space weather (SW) phenomena, namely,…

Solar and Stellar Astrophysics · Physics 2025-07-03 Pooja Devi , Rositsa Miteva , Ramesh Chandra , Kostadinka Koleva , Bendict Lawrance

We present a statistical study of the characteristics of very large amplitude whistler waves inside the terrestrial magnetosphere using waveform capture data from the Wind spacecraft as an addition of the study by Kellogg et al., [2010b].…

Space Physics · Physics 2011-01-18 L. B. Wilson , C. A. Cattell , P. J. Kellogg , J. R. Wygant , K. Goetz , A. Breneman , K. Kersten
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