Results 11 to 20 of about 16,204 (260)

Driving Dynamical Inner‐Heliosphere Models With In Situ Solar Wind Observations

open access: yesSpace Weather
Accurately reconstructing the solar wind throughout the inner heliosphere is essential for understanding solar–terrestrial interactions and improving space‐weather forecasts.
M. J. Owens   +10 more
doaj   +2 more sources

Improving the Arrival Time Estimates of Coronal Mass Ejections by Using Magnetohydrodynamic Ensemble Modeling, Heliospheric Imager Data, and Machine Learning

open access: yesThe Astrophysical Journal, 2023
The arrival time prediction of coronal mass ejections (CMEs) is an area of active research. Many methods with varying levels of complexity have been developed to predict CME arrival.
Talwinder Singh   +6 more
doaj   +1 more source

Deflection of Coronal Mass Ejections in Unipolar Ambient Magnetic Fields

open access: yesThe Astrophysical Journal, 2023
The trajectories of coronal mass ejections (CMEs) are often seen to deviate substantially from a purely radial propagation direction. Such deviations occur predominantly in the corona and have been attributed to “channeling” or deflection of the eruptive
Michal Ben-Nun   +7 more
doaj   +1 more source

Evolution of the Radial Size and Expansion of Coronal Mass Ejections Investigated by Combining Remote and In Situ Observations

open access: yesThe Astrophysical Journal, 2023
A fundamental property of coronal mass ejections (CMEs) is their radial expansion, which determines the increase in the CME radial size and the decrease in the CME magnetic field strength as the CME propagates.
Bin Zhuang   +6 more
doaj   +1 more source

Energetics of solar coronal mass ejections [PDF]

open access: yesAstronomy & Astrophysics, 2007
Aims: We investigate whether solar coronal mass ejections are driven mainly by coupling to the ambient solar wind or through the release of internal magnetic energy. Methods: We examine the energetics of 39 flux-rope like coronal mass ejections (CMEs) from the Sun using data in the distance range $\sim$ 2--20 $R_{\odot}$ from the Large Angle ...
Subramanian, Prasad, Vourlidas, Angelos
openaire   +2 more sources

A SOLAR CORONAL JET EVENT TRIGGERS A CORONAL MASS EJECTION [PDF]

open access: yesThe Astrophysical Journal, 2015
We present the multi-point and multi-wavelength observation and analysis on a solar coronal jet and coronal mass ejection (CME) event in this paper. Employing the GCS model, we obtained the real (three-dimensional) heliocentric distance and direction of the CME and found it propagate in a high speed over 1000 km/s .
Jiajia Liu   +5 more
openaire   +2 more sources

A Comparative Study of Two Contrasting Cosmic-Ray Events Caused by Solar Eruptions from NOAA AR 12673 in 2017 September

open access: yesThe Astrophysical Journal, 2023
Two major solar eruptions on AR 12673 produced a Forbush decrease (FD) event (reduction of cosmic rays) on 2017 September 8 and ground-level enhancement (GLE; enhancement of cosmic rays) on 2017 September 10.
Xiao Xia Yu   +5 more
doaj   +1 more source

Unraveling the Thermodynamic Enigma between Fast and Slow Coronal Mass Ejections

open access: yesThe Astrophysical Journal, 2023
Coronal mass ejections (CMEs) are the most energetic expulsions of magnetized plasma from the Sun that play a crucial role in space weather dynamics.
Soumyaranjan Khuntia   +5 more
doaj   +1 more source

Future high-resolution and high-cadence observations for unraveling small-scale explosive solar features

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Solar coronal jets are frequently occurring collimated ejections of solar plasma, originating from magnetically mixed polarity locations on the Sun of size scale comparable to that of a supergranule.
Alphonse C. Sterling   +8 more
doaj   +1 more source

Anomalous-plasmoid-ejection-induced secondary magnetic reconnection: modeling solar flares and coronal mass ejections by laser–plasma experiments

open access: yesHigh Power Laser Science and Engineering, 2013
The driving mechanism of solar flares and coronal mass ejections is a topic of ongoing debate, apart from the consensus that magnetic reconnection plays a key role during the impulsive process.
Quanli Dong   +22 more
doaj   +1 more source

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