Results 51 to 60 of about 22,597 (264)

Narrow Coronal Mass Ejections

The Astrophysical Journal, 2001
Narrow coronal mass ejections (CMEs), defined arbitrarily as events whose apparent angular width is 15° or less, are a small subset of all CMEs. Little is known of the properties of these events and whether these properties differ from those of the larger, more typical CMEs. We have included in this study 15 narrow CMEs observed in the period from 1999
Holly R. Gilbert, Elizabeth C. Serex, Thomas E. Holzer, R. M. MacQueen, Patrick S. McIntosh   +4 more
openaire   +1 more source

IMPULSIVE ACCELERATION OF CORONAL MASS EJECTIONS. I. STATISTICS AND CORONAL MASS EJECTION SOURCE REGION CHARACTERISTICS [PDF]

The Astrophysical Journal, 2011
We use high time cadence images acquired by the STEREO EUVI and COR instruments to study the evolution of coronal mass ejections (CMEs) from their initiation through impulsive acceleration to the propagation phase. For a set of 95 CMEs we derived detailed height, velocity, and acceleration profiles and statistically analyzed characteristic CME ...
Bein, Bianka, Berkebile-Stoiser, Sigrid, Veronig, Astrid, Temmer, Manuela, Muhr, Nicole, Kienreich, Ines, Utz, Dominik, Vršnak, Bojan   +7 more
openaire   +1 more source

Quantitative MRI Values for Atrial and Ventricular Parameters in Altitude‐Dwelling Youth

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The hypoxic environment on the Qinghai Plateau significantly exacerbates myocardial remodeling, with sex/ethnicity‐specific variations in cardiac parameters among local youth. Current cardiac MRI reference values lack data from physiologically adapted populations on this plateau.
Xiumei Xiao, Hui Xu
wiley   +1 more source

Probing Coronal Mass Ejection Inclination Effects with EUHFORIA

The Astrophysical Journal
Coronal mass ejections (CMEs) are complex magnetized plasma structures in which the magnetic field spirals around a central axis, forming what is known as a flux rope (FR).
Karmen Martinić, Eleanna Asvestari, Mateja Dumbović, Tobias Rindlisbacher, Manuela Temmer, Bojan Vršnak   +5 more
doaj   +1 more source

Multiwavelength Study on Solar and Interplanetary Origins of the Strongest Geomagnetic Storm of Solar Cycle 23

, 2011
We study the solar sources of an intense geomagnetic storm of solar cycle 23 that occurred on 20 November 2003, based on ground- and space-based multiwavelength observations.
B. Schmieder, B.N. Handy, B.T. Tsurutani, C. Möstl, D.A. Tidman, D.A. Tidman, D.F. Smith, D.L. Judge, E. Echer, E. Echer, G. Newkirk, J. Zhang, K. Cho, K.H. Schatten, L. Burlaga, M.D. Altschuler, N. Gopalswamy, N. Gopalswamy, N. Srivastava, P. K. Manoharan, P. Kumar, P.F. Chen, P.K. Manoharan, P.K. Manoharan, P.K. Manoharan, Pankaj Kumar, R. Chandra, S. Pohjolainen, S.M. Hill, V. Bothmer, V.J. Pizzo, V.V. Grechnev, Wahab Uddin, Y. Wang, Y.I. Ermolaev   +34 more
core   +1 more source

Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy: Long‐Term Follow‐Up of Deformations and Hemodynamics

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background A detailed evaluation of hemodynamics, supportive morphology, and deformation may help uncover the pathophysiology of hypertrophic obstructive cardiomyopathy (HOCM) and the changes wrought by alcohol septal ablation (ASA). Purpose To investigate the global cardiac volume, myocardial deformation, and hemodynamic characteristics ...
Kenichiro Suwa, Kazuto Ohno, Terumori Satoh, Ryota Sato, Keisuke Iguchi, Yuichiro Maekawa   +5 more
wiley   +1 more source

Relating near-Earth observations of an interplanetary coronal mass ejection to the conditions at its site of origin in the solar corona [PDF]

, 2005
A halo coronal mass ejection (CME) was detected on January 20, 2004. We use solar remote sensing data (SOHO, Culgoora) and near-Earth in situ data (Cluster) to identify the CME source event and show that it was a long duration flare in which a magnetic ...
Balogh, A, Culhane, JL, Fazakerley, AN, Harra, LK, Lucek, E, Matthews, SA, Mazelle, C, Owen, CJ, Reme, H, van Driel-Gesztelyi, L   +9 more
core  

Solar Sources of Interplanetary Magnetic Clouds Leading to Helicity Prediction

, 2018
This study identifies the solar origins of magnetic clouds that are observed at 1 AU and predicts the helical handedness of these clouds from the solar surface magnetic fields.
Riley, Pete, Tran, T., Ulrich, Roger K.
core   +2 more sources

Laboratory-generated Coronal Mass Ejections [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractWe have begun a series of laboratory experiments focused on understanding how coronal mass ejections (CME) interact and evolve in the solar wind. The experiments make use of the Helicon-Cathode (HelCat) plasma facility, and the Plasma Bubble eXperiment (PBeX).
Christopher Watts, Yue Zhang, Alan Lynn, Ward Manchester, C. Nick Arge   +4 more
openaire   +1 more source

Fully Automated Plane Prescription in Cardiac MRI: A Prospective Cohort Study

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Accurate plane positioning is important for high‐quality cardiac MRI images but requires specialized training, limiting accessibility. Purpose To evaluate an automated plane positioning tool and compare it with manual planning. Study Type Prospective.
Benjamin Böttcher, Felix G. Meinel, Karolin K. Deyerberg, Lena‐Maria Watzke, Mathias Manzke, Margarita Gorodezky, Gaspar Delso, Antonia Dalmer, Anne Nerger, Marc‐André Weber, Ann‐Christin Klemenz   +10 more
wiley   +1 more source