Results 101 to 110 of about 16,696 (216)

Understanding the Origins of Problem Geomagnetic Storms Associated with "Stealth" Coronal Mass Ejections. [PDF]

Space Sci Rev, 2021
Nitta NV, Mulligan T, Kilpua EKJ, Lynch BJ, Mierla M, O'Kane J, Pagano P, Palmerio E, Pomoell J, Richardson IR, Rodriguez L, Rouillard AP, Sinha S, Srivastava N, Talpeanu DC, Yardley SL, Zhukov AN.   +16 more
europepmc   +1 more source

Unexpected Giant Right Coronary Artery Aneurysm Diagnosed by Computed Tomography Angiography in the Emergency Department

Journal of Clinical Ultrasound, Volume 54, Issue 2, Page 509-515, February 2026.
3D Volume Rendering coronary CTA reconstruction showing a giant thrombosed aneurysm of the proximal right coronary artery ABSTRACT Giant coronary artery aneurysms (GCAA) are usually defined as diameter > 8 mm or > 400% of the adjacent normal segment; they are very rare (reported prevalence ≈0.02%).
Stefano Giusto Picchi, Giulia Lassandro, Rosita Comune, Filomena Pezzullo, Stefania Tamburrini, Giulio Cocco, Nino Cocco, Domenico Tafuri, Antonio Corvino   +8 more
wiley   +1 more source

Disparities in Magnetic Cloud Observations between Two Spacecraft Having Small Radial and Angular Separations near 1 au

The Astrophysical Journal
Studies for inferring the global characteristics of coronal mass ejections (CMEs) from multipoint local in situ observations have been undertaken previously, but limited studies have utilized measurements from multiple spacecraft with sufficiently small ...
Anjali Agarwal, Wageesh Mishra
doaj   +1 more source

Deflection and Rotation of CMEs from Active Region 11158

, 2017
Between the 13 and 16 of February 2011 a series of coronal mass ejections (CMEs) erupted from multiple polarity inversion lines within active region 11158.
A. Isavnin, A. Thernisien, A. Vourlidas, A.F.R. Thernisien, B. Gui, B.J. Lynch, B.P. Filippov, C. Kay, C. Kay, C. Kay, C. Kay, C. Kay, C. Kay, C. Shen, E. Hildner, E.K.J. Kilpua, H. Cremades, I.G. Richardson, J. Schou, J. Zhang, J.R. Lemen, J.T. Gosling, K. Tziotziou, K.H. Schatten, M.D. Altschuler, M.L. Mays, N. Gopalswamy, N. Gopalswamy, N.P. Savani, O. Olmedo, O. Panasenco, O. Panasenco, P. Liewer, R.M. MacQueen, T. Nieves-Chinchilla, T. Nieves-Chinchilla, T. Török, W.D. Pesnell, W.T. Thompson, W.T. Thompson, Y. Fan   +40 more
core   +1 more source

Analyzing Geomagnetic Data From the Dusheti Observatory During the Intense Magnetic Storms of 2024

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Geomagnetic storms, intense disturbances in the Earth's magnetosphere, pose risks to both technology and human activity in space. In this study, we analyzed geomagnetic field measurements from the Dusheti Observatory in Georgia during the intense geomagnetic storms of March 3, March 24, and 11 May 2024.
Oleg Kharshiladze, Luka Tsulukidze, Aleksandre Ghurchumelia, Luca Sorriso‐Valvo, Khatuna Elbakidze, Emiliya Yordanova, Tamaz Matiashvili   +6 more
wiley   +1 more source

Two Energy Release Processes for CMEs: MHD Catastrophe and Magnetic Reconnection

, 2007
It remains an open question how magnetic energy is rapidly released in the solar corona so as to create solar explosions such as solar flares and coronal mass ejections (CMEs).
Aly, Antiochos, Chen, Chen, Chen, Choe, Ding, Flyer, Forbes, Forbes, Forbes, Forbes, Hu, Isenberg, Jing, Krall, L.D. Xia, Li, Lin, Lin, Lin, Low, Low, MacQueen, Peng, Qiu, Sun, Van Tend, Van Tend, Y. Chen, Y.Q. Hu, Yan, Zhang, Zhang   +33 more
core   +1 more source

Understanding Interplanetary Coronal Mass Ejection Signatures

, 2006
While interplanetary coronal mass ejections (ICMEs) are understood to be the heliospheric counterparts of CMEs, with signatures undeniably linked to the CME process, the variability of these signatures and questions about mapping to observed CME features raise issues that remain on the cutting edge of ICME research.
Wimmer-Schweingruber, R.F., Crooker, N.U., Balogh, A., Bothmer, V., Forsyth, R.J., Gazis, P., Gosling, J.T., Horbury, T., Kilchenmann, A., Richardson, I.G., Richardson, J.D., Riley, P., Rodriguez, L., von Steiger, R., Wurz, Peter, Zurbuchen, T.H.   +15 more
openaire   +3 more sources

Assessing Magnetic Fluctuations Effects in the South American Sector in Relation to Global Variations Using Ksa Index, Kp Index, and Hybrid Formats During Quiet Times Across the Seasons of the 2020 Solar Minimum

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Geomagnetic indices can be used to quantify variations in geomagnetic activity caused by Sun‐Earth interactions across the magnetosphere and ionosphere. The global Kp index is widely used as a global geomagnetic indicator, but it is based mostly on the Northern Hemisphere with no contributions from South American observatories.
L. M. Guizelli, C. M. Denardini, J. Moro, L. C. A. Resende, S. S. Chen, P. K. Nyassor   +5 more
wiley   +1 more source

Detecting Stellar Coronal Mass Ejections via Coronal Dimming in the Extreme Ultraviolet

The Astrophysical Journal
Stellar flares and coronal mass ejections (CMEs) can strip planetary atmospheres, reducing the potential habitability of terrestrial planets. While flares have been observed for decades, stellar CMEs remain elusive.
James Paul Mason, Allison Youngblood, Kevin France, Astrid M. Veronig, Meng Jin   +4 more
doaj   +1 more source

Statistical Characteristics of Electron Precipitation During HSS‐ and ICME‐Driven Storms Observed by the EISCAT Radar

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The 1–100 keV electron precipitation during storm time has been studied by applying the updated ELSPEC inversion method to field‐aligned electron density profiles measured by the EISCAT Tromsø radar at L = 6.5. The statistical properties of peak energy, total energy flux, and total number flux as a function of MLT have been studied for the two
N. M. Ellahouny, A. T. Aikio, I. I. Virtanen, H. Vanhamäki, L. Cai, M. N. Pedersen, H. W. Tesfaw   +6 more
wiley   +1 more source