Zobrazeno 1 - 10
of 214
pro vyhledávání: '"Leake, James"'
We present the first results of three-dimensional (3D) numerical magnetohydrodynamic (MHD) simulations of the onset of magnetic reconnection via the tearing instability in dynamically thinning current sheets in the solar corona. In all our simulation
Externí odkaz:
http://arxiv.org/abs/2406.04486
We develop a general description of how information propagates through a magnetohydrodynamic (MHD) system based on the method of characteristics and use that to formulate numerical boundary conditions (BCs) that are intrinsically consistent with the
Externí odkaz:
http://arxiv.org/abs/2311.02281
The thickness of current sheets is extremely important, especially as it relates to the onset of fast magnetic reconnection. Onset determines how much magnetic free energy can build up in a field before it is explosively released. This has implicatio
Externí odkaz:
http://arxiv.org/abs/2307.13825
Solar eruptive events such as coronal mass ejections and eruptive flares are frequently associated with the emergence of magnetic flux from the convection zone into the corona. We use three dimensional magnetohydrodynamic numerical simulations to stu
Externí odkaz:
http://arxiv.org/abs/2205.12957
Results from 2.5D and 3D studies of the onset and development of the tearing instability are presented, using high fidelity resistive MHD simulations. A limited parameter study of the strength of the reconnecting field (or shear angle) was performed.
Externí odkaz:
http://arxiv.org/abs/2202.04761
Magnetic flux ropes (MFRs) rising buoyantly through the Sun's convection zone are thought to be subject to viscous forces preventing them from rising coherently. Numerous studies have suggested that MFRs require a minimum twist in order to remain coh
Externí odkaz:
http://arxiv.org/abs/2101.01020
Magnetic reconnection, a fundamentally important process in many aspects of astrophysics, is believed to be initiated by the tearing instability of an electric current sheet, a region where magnetic field abruptly changes direction and electric curre
Externí odkaz:
http://arxiv.org/abs/2001.02971
Relative magnetic helicity is a gauge invariant quantity suitable for the study of the magnetic helicity content of heliospheric plasmas. Relative magnetic helicity can be decomposed uniquely into two gauge invariant quantities, the magnetic helicity
Externí odkaz:
http://arxiv.org/abs/1809.03765
Autor:
Linton, Mark G., Antiochos, Spiro K., Barnes, Graham, Fan, Yuhong, Liu, Yang, Lynch, Benjamin J., Afanasyev, Andrey N., Arge, C. Nick, Burkepile, Joan, Cheung, Mark C.M., Dahlin, Joel T., DeRosa, Marc L., de Toma, Giuliana, DeVore, C. Richard, Fisher, George H., Henney, Carl J., Jones, Shaela I., Karpen, Judith T., Kazachenko, Maria D., Leake, James E., Török, Tibor, Welsch, Brian T.
Publikováno v:
In Advances in Space Research June 2023
Autor:
Dacie, Sally, Torok, Tibor, Demoulin, Pascal, Linton, Mark, Downs, Cooper, van Driel-Gesztelyi, Lidia, Long, David, Leake, James
We describe and analyze observations by the Solar Dynamics Observatory of the emergence of a small, bipolar active region within an area of unipolar magnetic flux that was surrounded by a circular, quiescent filament. Within only eight hours of the s
Externí odkaz:
http://arxiv.org/abs/1807.00020