Results 11 to 20 of about 1,209,366 (163)

MHD simulations of coronal heating [PDF]

, 2015
The problem of heating the solar corona requires the conversion of magnetic energy into thermal energy. Presently, there are two promising mechanisms for heating the solar corona: wave heating and nanoflare heating.
Tam, Kuan V.
core   +2 more sources

Effect of structuring on coronal loop oscillations [PDF]

, 2007
In this Thesis the theoretical understanding of oscillations in coronal structures is developed. In particular, coronal loops are modelled as magnetic slabs of plasma.
McEwan, Michael P.
core   +2 more sources

Topological structure of the magnetic solar corona [PDF]

, 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

MHD turbulence and heating of the open field-line solar corona [PDF]

, 2003
This paper discusses the possibility that heating of the solar corona in open field-line regions emanating from coronal holes is due to a nonlinear cascade, driven by low-frequency or quasi-static magnetohydrodynamic fluctuations.
Dmitruk, Pablo, Milano, L., Matthaeus, William H., Dmitruk, P., Milano, L. J., Matthaeus, W. H., Mullan, D. J., Oughton, Sean, S. Oughton, P. Dmitruk, W. H. Matthaeus, L. Milano, Oughton, S., D. J. Mullan   +13 more
core   +2 more sources

Dominance of Bursty over Steady Heating of the 4–8 MK Coronal Plasma in a Solar Active Region: Quantification Using Maps of Minimum, Maximum, and Average Brightness

The Astrophysical Journal, 2022
A challenge in characterizing active region (AR) coronal heating is in separating transient (bursty) loop heating from the diffuse background (steady) heating.
Sanjiv K. Tiwari, Lucy A. Wilkerson, Navdeep K. Panesar, Ronald L. Moore, Amy R. Winebarger   +4 more
doaj   +1 more source

Statistical evidence for the existence of Alfvénic turbulence in solar coronal loops [PDF]

, 2014
The authors acknowledge support from NASA contracts NNX08BA99G, NNX11AN98G, NNM12AB40P, NNG09FA40C (IRIS), and NNM07AA01C (Hinode). The research leading to these results has also received funding from the European Commission Seventh Framework Programme ...
Bethge, C., James Threlfall, Mcintosh, S.W., De Moortel, I., Threlfall, J., Christian Bethge, Liu, J., Scott W. Mcintosh, Jiajia Liu, Ineke De Moortel, De Moortel, I.; id_orcid   +10 more
core   +1 more source

Current sheets in the solar corona : formation, fragmentation and heating [PDF]

, 2011
In this thesis we investigate current sheets in the solar corona. The well known 1D model for the tearing mode instability is presented, before progressing to 2D where we introduce a non-uniform resistivity.
Bowness, Ruth
core   +2 more sources

On the Nature of the Three-part Structure of Solar Coronal Mass Ejections

The Astrophysical Journal, 2022
Coronal mass ejections (CMEs) result from eruptions of magnetic flux ropes (MFRs) and can possess a three-part structure in white-light coronagraphs, including a bright front, dark cavity, and bright core.
Hongqiang Song, Jie Zhang, Leping Li, Zihao Yang, Lidong Xia, Ruisheng Zheng, Yao Chen   +6 more
doaj   +1 more source

A solar storm observed from the Sun to Venus using the STEREO, Venus Express, and MESSENGER spacecraft [PDF]

, 2009
The suite of SECCHI optical imaging instruments on the STEREO-A spacecraft is used to track a solar storm, consisting of several coronal mass ejections (CMEs) and other coronal loops, as it propagates from the Sun into the heliosphere during May 2007 ...
Anderson, B., Tsang, S., Harrison, R. A., Lockwood, M., Savani, N. P., Eyles, C. J., Jones, G. H., Frahm, R. A., Forsyth, R. J., Thernisien, A., Howard, R. A., Whittaker, I., Carr, C. M., Rouillard, A. P., Fraenz, M., Brown, D. S., Hapgood, M., Coates, A. J., Zhang, T. -L., Crothers, S. R., Grande, M., Davies, J. A., Sheeley, N. R., Bewsher, D., Winningham, J. D., Davis, C. J.   +25 more
core   +6 more sources

The Equilibrium of Coronal Loops Near Separatrices

The Astrophysical Journal, 2023
We present numerical models from the field-aligned HYDrodynamics and RADiation code (HYDRAD) of a highly asymmetric closed coronal loop with near-singular expansion factor.
Emily I Mason, Spiro K Antiochos, Stephen Bradshaw   +2 more
doaj   +1 more source