Results 71 to 80 of about 15,087 (215)

Relationship of Coronal Mass Ejection Events with Solar Flares and coronal Holes [PDF]

Symposium - International Astronomical Union, 1990
We present an analysis of the relationship between coronal mass ejection (CME) events with solar flares and coronal holes. Out of 79 CME events whose location and span are known, 10 CME event circles contain solar flares. On the other hand out of 71 CME events (selected for the study with coronal holes) 40 CME event circles contain coronal holes.
openaire   +1 more source

On the Freeze‐In Distance of Solar Wind Fluid Entropy Variability in the Corona

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The strong correlation between solar wind entropy and the frozen‐in ion charge state ratio O7+/O6+ ${\mathrm{O}}^{7+}/{\mathrm{O}}^{6+}$ indicates that entropy variability on timescales of hours or longer is preserved from its solar source. This prompts the question: where in the solar atmosphere does this entropy variability come from, and at
Aidan J. Nakhleh, Nicholeen M. Viall, Susan T. Lepri, Jim M. Raines   +3 more
wiley   +1 more source

Automated Detection of Coronal Mass Ejections with Few-shot Learning

The Astrophysical Journal Supplement Series
Coronal mass ejections (CMEs) are a primary driver of severe space weather impacts, yet accurate delineation of CME structure in coronagraph images remains challenging.
Xin Liu, Jiajia Liu, Shuhua Song, Ye Jiang, Xin Huang, Zhanpeng Xu, Robertus Erdélyi, Yimin Wang   +7 more
doaj   +1 more source

MAGNETIC FIELD STRUCTURES TRIGGERING SOLAR FLARES AND CORONAL MASS EJECTIONS [PDF]

The Astrophysical Journal, 2012
33 pages, 8 figures (ApJ, in press)
Kusano, K., Bamba, Y., Yamamoto, T. T., Iida, Y., Toriumi, S., Asai, A.   +5 more
openaire   +2 more sources

Evaluating the OMNI Database: Statistical Analysis of Time‐Shifted L1 Data Versus Direct Near‐Earth Solar Wind Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract This study presents a comprehensive statistical comparison of solar wind measurements between the OMNI database which contains data collected at L1 that is shifted to the bow shock nose, and near‐Earth observations from MMS, Cluster, and THEMIS missions near the bow shock nose.
G. H. Blüthner, M. Volwerk, D. Schmid, R. Nakamura, M. Temmer, O. W. Roberts, F. Koller, A. Varsani   +7 more
wiley   +1 more source

Turbulence development behind the bow shock during disturbed and undisturbed solar wind

Solar-Terrestrial Physics
Magnetosheath is a transition layer between the solar wind and the magnetosphere and may contribute to the geoeffectiveness of various large-scale interplanetary phenomena.
Rakhmanova L. S., Khokhlachev A. A., Riazantseva M. O., Yermolaev Y. I., Zastenker G. N.   +4 more
doaj   +1 more source

Full Velocities and Propagation Directions of Coronal Mass Ejections Inferred from Simultaneous Full-disk Imaging and Sun-as-a-star Spectroscopic Observations

The Astrophysical Journal, 2023
Coronal mass ejections (CMEs) are violent ejections of magnetized plasma from the Sun that can trigger geomagnetic storms, endanger satellite operations, and destroy electrical infrastructures on the Earth.
Hong-peng Lu, Hui Tian, He-chao Chen, Yu Xu, Zhen-yong Hou, Xian-yong Bai, Guang-yu Tan, Zi-hao Yang, Jie Ren   +8 more
doaj   +1 more source

Effects of Coronal Mass Ejections on Distant Coronal Streamers

, 2014
The effects of a large coronal mass ejection (CME) on a solar coronal streamer located roughly 90 degrees from the main direction of the CME propagation observed on January 2, 2012 by the SOHO/LASCO coronagraph are analyzed.
Filippov, B., Kayshap, P., Martsenyuk, O., Srivastava, A. K.   +3 more
core   +1 more source

Different triggering mechanisms for solar flares and coronal mass ejections [PDF]

Astronomy & Astrophysics, 2008
Context. Experimental observations indicate that flares and CMEs are often associated, even if the precise relationship between the two phenomena is a still hot and open question. Aims. We present a study of the statistical properties of solar flare and CME temporal organisation, in order to enlighten differences in the mechanisms at the basis of their
LIPPIELLO, Eugenio, DE ARCANGELIS, Lucilla, GODANO, Cataldo   +2 more
openaire   +1 more source

Compression of Mercury's Dayside Magnetopause to the Surface: A Three‐Dimensional Model of Magnetospheric Structure and Dynamics

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We apply a hybrid model (kinetic ions, fluid electrons) to provide context for MErcury Surface Space ENvironment, GEochemistry, and Ranging (MESSENGER) observations of Disappearing Dayside Magnetosphere (DDM) events at Mercury. Such events have been observed on four occasions and are caused by Coronal Mass Ejections completely removing the ...
Georg Glebe, C. Michael Haynes, Sven Simon   +2 more
wiley   +1 more source