Results 131 to 140 of about 9,915 (239)

Constraining the Mass Loss and the Kinetic Energy of Stellar Coronal Mass Ejections with Solar Far-ultraviolet Flares

The Astrophysical Journal
Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres.
Nuri Park, Evgenya L. Shkolnik, Joe Llama   +2 more
doaj   +1 more source

The Influence of Solar Source Information on Energy-dependent Solar Energetic Particle Flux and Timing Based on Solar Energetic Particle Events Observed over Four Solar Cycles

The Astrophysical Journal
This study is based on proton flux data from ESA’s Solar Energetic Particle Environment Modeling database, analyzing solar energetic particle (SEP) events observed near Earth from 1976 to 2017. We have matched these events with corresponding solar flares
Zhendi Huang, Jingnan Guo, Yubao Wang, Junhao Xia, Daniel Pacheco   +4 more
doaj   +1 more source

Thermal Evolution of Solar Flares During the First Year of SDO as Seen by the EVE Instrument

, 2011
It is very evident during the first year of the Solar Dynamics Observatory (SDO) that the Sun awoke from its prolonged minimum and is well into solar cycle 24.
Chamberlin, Phillip C., Woods, Thomas N.
core  

Time-Series Feature Selection for Solar Flare Forecasting

Universe
Solar flares are significant occurrences in solar physics, impacting space weather and terrestrial technologies. Accurate classification of solar flares is essential for predicting space weather and minimizing potential disruptions to communication ...
Yagnashree Velanki, Pouya Hosseinzadeh, Soukaina Filali Boubrahimi, Shah Muhammad Hamdi   +3 more
doaj   +1 more source

Solar Flare Ion Temperatures

The Astrophysical Journal Letters
Abstract This Letter proposes that the ion temperature is several times the local electron temperature in the hot onset phase and in the above-the-loop region of solar flares. The Letter considers: the evidence of spectral line Doppler widths (“nonthermal” broadening); evidence for “universal” ion and electron temperature increase ...
Alexander J. B. Russell, Vanessa Polito, Paola Testa, Bart De Pontieu, Sergey A. Belov   +4 more
openaire   +3 more sources

Propagation and damping of MHD waves in the solar atmosphere

, 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  

Solar Flares Triggered by a Filament Peeling Process Revealed by High-resolution GST Hα Observations

The Astrophysical Journal Letters
The dynamic structures of solar filaments prior to solar flares provide important physical clues about the onset of solar eruptions. Observations of those structures under subarcsecond resolution with high cadence are rare.
Mia Mancuso, Ju Jing, Haimin Wang, Wenda Cao   +3 more
doaj   +1 more source

Solar flares - Magnetohydrodynamic instabilities

, 1981
It is pointed out that most solar flares are either simple-loop (or compact) flares or two-ribbon flares. A single loop brightens and decays without moving, whereas the appearance of the two-ribbon type involves the eruption of a magnetic arcade.
Hood, A. W., Priest, E. R.
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The Role of Reconnection at Magnetic Separators in Complex Solar Flare Ribbons

The Astrophysical Journal
Solar flare ribbons, manifesting as transient brightenings in the chromosphere, are believed to trace the footpoints of magnetic field lines reconnecting higher in the solar atmosphere.
Graham Barnes, Karin Dissauer
doaj   +1 more source

Topics in Energy Release and Particle Acceleration in the Heliosphere

, 2014
This thesis investigates both the release of energy in solar flares, and the acceleration and transport of particles in various astrophysical situations.
Armstrong, Craig Keith
core