Results 21 to 30 of about 1,511,102 (293)

Propagation and damping of MHD waves in the solar atmosphere [PDF]

open access: yes, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core   +2 more sources

September 2017 Solar Flares Effect on the Middle Atmosphere

open access: yesRemote Sensing, 2022
This paper examines the response of the upper atmosphere to increased radiation following exceptional solar activity in September 2017. The active region of the Sun AR2673 has caused intense solar-terrestrial disturbance. This active region has generated
Polina Pikulina   +3 more
doaj   +1 more source

Atmospheric Electrification in the Solar System [PDF]

open access: yesSurveys in Geophysics, 2006
Atmospheric electrification is not a purely terrestrial phenomenon: all Solar System planetary atmospheres become slightly electrified by cosmic ray ionisation. There is evidence for lightning on Jupiter, Saturn, Uranus and Neptune, and it appears likely to exist on Mars, Venus and Titan.
openaire   +3 more sources

Advanced Γ Method for Small-scale Vortex Detection in the Solar Atmosphere

open access: yesThe Astrophysical Journal Supplement Series, 2023
Ubiquitous vortical structures are considered to act as a natural source of various solar plasma phenomena, for example, a wide range of magnetohydrodynamic waves and jet excitations. This work aims to develop an advanced vortex detection algorithm based
Yuyang Yuan   +4 more
doaj   +1 more source

Influence of the Magnetic Field Topology in the Evolution of Small-Scale Two-Fluid Jets in the Solar Atmosphere

open access: yesPhysics, 2023
In this paper, a series of numerical simulations is performed to recreate small-scale two-fluid jets using the JOANNA code, considering the magnetohydrodynamics of two fluids (ions plus electrons and neutral particles).
Elton Everardo Díaz-Figueroa   +2 more
doaj   +1 more source

Photospheric magnetic vortex structures [PDF]

open access: yes, 2011
Using direct numerical magneto-hydrodynamic (MHD) simulations, we demonstrate the evidence of two physically different types of vortex motions in the solar photosphere.
Shelyag, S.   +14 more
core   +2 more sources

Magnetohydrodynamic Waves in Multi-Layered Asymmetric Waveguides: Solar Magneto-Seismology Theory and Application

open access: yesFrontiers in Astronomy and Space Sciences, 2019
Diagnosing the solar atmospheric plasma is one of the major challenges in solar physics. Magnetohydrodynamic (MHD) waves, by means of applying the powerful concept of solar magneto-seismology (SMS), provide a tool to obtain diagnostic insight into the ...
Matthew Allcock   +6 more
doaj   +1 more source

Interrogating solar flare loop models with IRIS observations 1: Overview of the models, and mass flows

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Solar flares are transient yet dramatic events in the atmosphere of the Sun, during which a vast amount of magnetic energy is liberated. This energy is subsequently transported through the solar atmosphere or into the heliosphere, and together with ...
Graham S. Kerr, Graham S. Kerr
doaj   +1 more source

Resonant Damping of Propagating Kink Waves in Non-stationary, Longitudinally Stratified, and Expanding Solar Waveguides

open access: yesFrontiers in Astronomy and Space Sciences, 2019
Propagating kink waves have been observed in many magnetic waveguides in the solar atmosphere, like coronal magnetic loops, spicules, and fine structures of prominences. There are also observational evidences that these waves are damped.
Michael S. Ruderman   +4 more
doaj   +1 more source

Interrogating solar flare loop models with IRIS observations 2: Plasma properties, energy transport, and future directions

open access: yesFrontiers in Astronomy and Space Sciences, 2023
During solar flares a tremendous amount of magnetic energy is released and transported through the Sun’s atmosphere and out into the heliosphere. Despite over a century of study, many unresolved questions surrounding solar flares are still present. Among
Graham S. Kerr, Graham S. Kerr
doaj   +1 more source

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