Results 41 to 50 of about 17,830 (208)

A Coronal Mass Ejection Source Region Catalog and Their Associated Properties

open access: yesThe Astrophysical Journal Supplement Series, 2023
The primary objective of this study is to connect coronal mass ejections (CMEs) to their source regions, primarily to create a CME source region catalog, and secondarily to probe the influence that the source regions have on the different statistical ...
Satabdwa Majumdar   +6 more
doaj   +1 more source

Ejection of cool plasma into the hot corona

open access: yes, 2011
We investigate the processes that lead to the formation, ejection and fall of a confined plasma ejection that was observed in a numerical experiment of the solar corona.
Antiochos   +38 more
core   +1 more source

Short term Variability of the Sun Earth System: An Overview of Progress Made during the CAWSES II Period [PDF]

open access: yes, 2015
This paper presents an overview of results obtained during the CAWSES II period on the short term variability of the Sun and how it affects the near Earth space environment. CAWSES II was planned to examine the behavior of the solar terrestrial system as
Gopalswamy, Nat   +2 more
core   +2 more sources

Free‐Breathing 3D Whole Heart and Aorta Cine MRI Without Contrast Agent—Comparison to Clinical Standard

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The demand for cardiac MRI is increasing with the growing burden of cardiovascular disease. However, conventional protocols require sequential acquisitions for multi‐breath‐hold 2D cine and 3D MR angiography (MRA), which is time‐consuming.
Ruixin Chen   +7 more
wiley   +1 more source

Mirror-mode Structures in Coronal Mass Ejection Sheaths

open access: yesThe Astrophysical Journal
Coronal mass ejections (CMEs) compress the upstream solar wind as they travel through interplanetary space, forming sheath regions and preceding shocks rich in plasma dynamics.
J. H. Gao   +3 more
doaj   +1 more source

Flux Rope Formation Preceding Coronal Mass Ejection Onset

open access: yes, 2009
We analyse the evolution of a sigmoidal (S shaped) active region toward eruption, which includes a coronal mass ejection (CME) but leaves part of the filament in place.
Amari   +19 more
core   +1 more source

Study of Evolution and Geo-effectiveness of Coronal Mass Ejection–Coronal Mass Ejection Interactions Using Magnetohydrodynamic Simulations with SWASTi Framework

open access: yesThe Astrophysical Journal
The geo-effectiveness of coronal mass ejections (CMEs) is a critical area of study in space weather, particularly in the lesser-explored domain of CME–CME interactions and their geomagnetic consequences.
Prateek Mayank   +4 more
doaj   +1 more source

STEREO and Wind observations of a fast ICME flank triggering a prolonged geomagnetic storm on 5-7 April 2010

open access: yes, 2010
On 5 April 2010 an interplanetary (IP) shock was detected by the Wind spacecraft ahead of Earth, followed by a fast (average speed 650 km/s) IP coronal mass ejection (ICME).
A. B. Galvin   +31 more
core   +1 more source

Narrow Coronal Mass Ejections

open access: yesThe 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   +4 more
openaire   +1 more source

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

open access: yesThe 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   +7 more
openaire   +1 more source

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