Results 21 to 30 of about 5,709 (297)

Quantification of the Writhe Number of the Evolution of Solar Filament Axes

open access: yesThe Astrophysical Journal, 2023
Solar filament eruptions often show complex and dramatic geometric deformation that is highly relevant to the underlying physical mechanism triggering the eruptions.
Zhenjun Zhou   +5 more
doaj   +1 more source

Dissipative instability in partially ionised prominence plasmas [PDF]

open access: yes, 2015
We investigate the nature of dissipative instability at the boundary (seen here as tangential discontinuity) between the viscous corona and the partially ionised prominence plasma in the incompressible limit.
Alexandrou, Marios   +2 more
core   +2 more sources

Automatic detection of limb prominences in 304 A EUV images [PDF]

open access: yes, 2009
A new algorithm for automatic detection of prominences on the solar limb in 304 A EUV images is presented, and results of its application to SOHO/EIT data discussed.
C. Cortes   +22 more
core   +2 more sources

Key Signatures of Prominence Materials and Category of Cold Materials Identified by Random Forest Classifier

open access: yesThe Astrophysical Journal Supplement Series, 2023
The origin of cold materials identified by different criteria is unclear. They are highly suspected to be erupted prominences. However, some cold materials defined by charge depletion exist in both quiet solar wind and interplanetary coronal mass ...
Zexin Cheng, Shuo Yao, Shuyi Meng
doaj   +1 more source

Helium Emissions Observed in Ground-Based Spectra of Solar Prominences [PDF]

open access: yes, 2012
The only prominent line of singly ionized helium in the visible spectral range, helium-II 4686 A, is observed together with the helium-I 5015 A singlet and the helium-I 4471 A triplet line in solar prominences.
Bianda, Michele   +3 more
core   +2 more sources

Diagnostics of Coronal Magnetic Fields Through the Hanle Effect in UV and IR Lines [PDF]

open access: yes, 2016
The plasma thermodynamics in the solar upper atmosphere, particularly in the corona, are dominated by the magnetic field, which controls the flow and dissipation of energy.
Fineschi, S.   +4 more
core   +2 more sources

Co- and counter-helicity interaction between two adjacent laboratory prominences [PDF]

open access: yes, 2004
The interaction between two side-by-side solar prominence-like plasmas has been studied using a four-electrode magnetized plasma source that can impose a wide variety of surface boundary conditions.
Bellan, P. M.   +2 more
core   +1 more source

Toward detailed prominence seismology - I. Computing accurate 2.5D magnetohydrodynamic equilibria

open access: yes, 2011
Context. Prominence seismology exploits our knowledge of the linear eigenoscillations for representative magnetohydro- dynamic models of filaments. To date, highly idealized models for prominences have been used, especially with respect to the overall ...
Beliën   +22 more
core   +3 more sources

Causal Relationships between Eruptive Prominences and Coronal Mass Ejections [PDF]

open access: yes, 2007
A close association between eruptive prominences and CMEs, both slow and fast CMEs, was reported in many studies. Sometimes it is possible to follow the material motion starting from the prominence (filament) activation to the CME in the high corona ...
Filippov, Boris, Koutchmy, Serge
core   +4 more sources

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