Zobrazeno 1 - 10
of 40
pro vyhledávání: '"James E. Leake"'
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 21 (2024)
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:
https://doaj.org/article/10af58775e7e44ebb8675ec1eb072306
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 270, Iss 2, p 30 (2024)
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 that are intrinsically consistent with the MHD eq
Externí odkaz:
https://doaj.org/article/1aef751e92d04bd9a291d60c89e24b7b
Publikováno v:
Frontiers in Physics, Vol 11 (2023)
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:
https://doaj.org/article/018d2ed909cd46829e7875ef1c9df063
Publikováno v:
The Astrophysical Journal, Vol 936, Iss 1, p 94 (2022)
This article presents results that challenge the paradigms that (1) the convection zone is the source of the radial magnetic field in the photosphere and (2) that coronal currents are neutralized from the perspective of the photosphere. We demonstrat
Externí odkaz:
https://doaj.org/article/c93650cc31f54a1db5202a07f9c1f7ff
Publikováno v:
The Astrophysical Journal. 939:54
The role of twist in the emergence of magnetic flux ropes into the solar atmosphere has remained unclear for some time. Although many studies have investigated how the photospheric properties of active regions resulting from the simulated emergence o
Publikováno v:
The Astrophysical Journal. 934:10
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
Publikováno v:
Astrophysical Journal
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab2c550a40736d8b885d0007efe606fb
https://hdl.handle.net/21.11116/0000-0008-16A1-921.11116/0000-0008-169F-D
https://hdl.handle.net/21.11116/0000-0008-16A1-921.11116/0000-0008-169F-D
Autor:
Jie Zhang, P. Syntelis, Tibor Torok, Ronald L. Moore, Georgios Chintzoglou, Spiros Patsourakos, Guillaume Aulanier, Manolis K. Georgoulis, Stephanie L. Yardley, Alexander Nindos, Vasilis Archontis, James E. Leake, Spiro K. Antiochos, Lucie M. Green, Vasyl Yurchyshyn, Angelos Vourlidas, Bernhard Kliem, Xin Cheng
Publikováno v:
Space Science Reviews. 216
A clear understanding of the nature of the pre-eruptive magnetic field configurations of Coronal Mass Ejections (CMEs) is required for understanding and eventually predicting solar eruptions. Only two, but seemingly disparate, magnetic configurations
Publikováno v:
The Astrophysical Journal. 927:196
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.
The physical conditions that determine the eruptive activity of solar active regions (ARs) are still not well understood. Various proxies for predicting eruptive activity have been suggested, with relatively limited success. Moreover, it is presently
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd124e5c0fdc7d8dd26fa387e327acd9
https://doi.org/10.5194/egusphere-egu2020-1654
https://doi.org/10.5194/egusphere-egu2020-1654