Results 21 to 30 of about 10,085,228 (216)

The investigation of quasi-separatrix layers in solar magnetic fields [PDF]

open access: yes, 2011
The structure of the magnetic field is often an important factor in many energetic processes in the solar corona. To determine the topology of the magnetic field features such as null points, separatrix surfaces, and separators must be found.
Restante, Anna Lisa
core   +2 more sources

Topological structure of the magnetic solar corona [PDF]

open access: yes, 2007
The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
core   +2 more sources

Relationship between plasma flow Doppler velocities and magnetic field parameters during the appearance of active regions at the solar photospheric level [PDF]

open access: yesSolnechno-Zemnaya Fizika, 2015
Using data obtained with the Michelson Doppler Imager (MDI) onboard the Solar and Heliospheric Observatory (SOHO), we have conducted a statistical study of the relationship between plasma flow Doppler velocities and magnetic field parameters during the appearance of active regions at the solar photospheric level.
openaire   +1 more source

The Relationship Between Plasma Flow Doppler Velocities and Magnetic Field Parameters During the Emergence of Active Regions at the Solar Photospheric Level [PDF]

open access: yesSolar Physics, 2012
A statistical study has been carried out of the relationship between plasma flow Doppler velocities and magnetic field parameters during the emergence of active regions at the solar photospheric level with data acquired by the Michelson Doppler Imager (MDI) onboard the Solar and Heliospheric Observatory (SOHO).
openaire   +2 more sources

Propagation and damping of MHD waves in the solar atmosphere [PDF]

open access: yes, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core   +2 more sources

The Sun's global photospheric and coronal magnetic fields : observations and models [PDF]

open access: yes, 2012
2012LRSP....9....6M Funding: STFC, the Leverhulme Trust and European Commission’s Seventh Framework Programme (FP7/2007-2013) under the grant agreement SWIFF (project no.
Anthony Yeates   +5 more
core   +1 more source

Average solar active region

open access: yesAstronomy & Astrophysics
Aims. Solar active regions (ARs) are key manifestations of the Sun’s magnetic activity, displaying diverse spatial and temporal characteristics. Their formation and evolution play a crucial role in understanding the solar dynamo and space weather. While individual ARs exhibit significant variability, ensemble averaging offers a method to extract their ...
Michal Švanda   +2 more
openaire   +3 more sources

Development and application of a global magnetic field evolution model for the solar corona [PDF]

open access: yes, 2009
Magnetic fields are fundamental to the structure and dynamics of the Sun’s corona. Observations show them to be locally complex, with highly sheared and twisted fields visible in solar filaments/prominences.
Yeates, Anthony Robinson
core   +2 more sources

CME Velocity Field Calculation Model Based on an Unsupervised Transformer Optical Flow Network

open access: yesThe Astrophysical Journal Supplement Series
The optical flow algorithm (OF) is one the main methods for calculating image velocity field and has many applications in space weather. Most OF calculations are applied to the motion of labeled rigid objects and are not suitable for velocity detection ...
Qingyang Chen   +5 more
doaj   +1 more source

Parallel and perpendicular cascades in solar wind turbulence [PDF]

open access: yes, 2005
MHD-scale fluctuations in the velocity, magnetic, and density fields of the solar wind are routinely observed. The evolution of these fluctuations, as they are transported radially outwards by the solar wind, is believed to involve both wave and ...
Matthaeus, William H.   +5 more
core   +2 more sources

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