Results 71 to 80 of about 11,319 (196)
A slow coronal mass ejection with rising X-ray source [PDF]
, 2005 An eruptive event, which occurred on 16th April 2002, is discussed. Using images from the Transition Region and Coronal Explorer ( TRACE) at 195 angstrom, we observe a lifting flux rope which gives rise to a slow coronal mass ejection ( CME).
Goff, CP +4 more
core +1 more source
Solar Stereoscopy and Tomography
Living Reviews in Solar Physics, 2011 We review stereoscopic and tomographic methods used in the solar corona, including ground-based and space-based measurements, using solar rotation or multiple spacecraft vantage points, in particular from the STEREO mission during 2007--2010 ...
Markus J. Aschwanden
doaj
The Astrophysical Journal Supplement SeriesA hybrid machine learning model, which combines a shallow convolutional neural network and a long short-term memory (CNN-LSTM) network, has been developed to automate the detection of kink oscillations in coronal plasma loops within large volumes of high-
Sergey A. Belov +3 more
doaj +1 more source
Dual-Species Plasmas Illustrate MHD Flows [PDF]
, 2008 Plasma loops created in the laboratory strongly resemble structures observed in the solar corona. For example, both solar coronal loops and experimental loops exhibit remarkably uniform axial cross sections. A magnetohydrodynamic theory that was proposed
Bellan, Paul M., Stenson, Eve V.
core +1 more source
Gravitational steady states of solar coronal loops
Physics of Plasmas, 2017 Coronal loops on the surface of the sun appear to consist of curved, plasma-confining magnetic flux tubes or “ropes,” anchored at both ends in the photosphere. Toroidal loops carrying current are inherently unstable to expansion in the major radius due to toroidal-curvature-induced imbalances in the magnetic and plasma pressures.
Linda E. Sugiyama, M. Asgari-Targhi
openaire +2 more sources
Magnetic Topology and Loop Statistics in Observed Coronal Holes Using Potential Field Modeling
The Astrophysical JournalPotential field source surface (PFSS) models are widely used to study the solar corona and form the basis for solar wind forecasting, yet they often fail to reproduce observed properties of coronal holes.
Stephan G. Heinemann +2 more
doaj +1 more source
Coronal Loop Expansion Properties Explained Using Separators
, 2009 One puzzling observed property of coronal loops is that they are of roughly constant thickness along their length. Various studies have found no consistent pattern of width variation along the length of loops observed by TRACE and SOHO.
Barnes +9 more
core +1 more source
The Astrophysical JournalWe present the results of models of impulsively heated coronal loops using the 1D hydrodynamic Adaptively Refined Godunov Solver code. The impulsive heating events (which we refer to as nanoflares ) are modeled by discrete pulses of energy along the loop.
Therese A. Kucera +2 more
doaj +1 more source
VLA-Max '91 tests of high energy flare physics [PDF]
The potential for the Very Large Array (VLA) contributions during the coming maximum in solar activity is illustrated by unpublished observations of solar flares on 28 May, 8 June, 24 June, and 30 September 1988.
Lang, Kenneth R., Willson, Robert F.
core +1 more source
The stability of solar coronal loops
The Astrophysical Journal, 1979 We have examined the stability of the ''quasi-static'' models of coronal loops. We find that all models in which the heat flux at the base of the loop is assumed to vanish are unstable to the growth of thermal perturbations. The growth rates and the profiles of the unstable modes indicate that the instability involves primarily the low-temperature ...
openaire +1 more source