Zhuheng Li's research while affiliated with Xidian University and other places
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Publications (3)
A direct boundary integral formulation for a force-free magnetic field with finite energy content in the semispace above the Sun is presented. This is a new formulation for a three-dimensional nonlinear force-free field in which the boundary data can easily be incorporated. We have proposed an optimal method to numerically find the non-constant-α f...
ABSTRACTA boundary integral equation representation for the non-constant-α force-free field in space outside the Sun was investigated by Yan & Sakurai, who introduced a local parameter λ instead of the force-free factor α which should satisfy a proposed condition. Then the field at any point in space can be represented by the boundary integral equa...
A Boundary Integral Equation (BIE) representation for the
non-constant-α force-free field in the exterior of the sun can be
found in Yan and Sakurai (2000) where the local parameters λ
instead of the global one α have been introduced. But there has
been no verification on the solutions of those λ parameters. Here
we make a comprehension study based...
Citations
... For this reason, we performed the nonlinear force-free field (NLFF) extrapolation using a method proposed by He et al. (2011). This method is based on the formulation of the direct boundary integral equation (Yan & Li 2006). For our goal we used as boundary conditions the Space-weather Active Region Patches (SHARPs) version (Hoeksema et al. 2014) of the vector magnetograms taken by SDO/HMI on October 22 at 14:00 UT, i.e., some minutes before the flare onset. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/272387610509361-1441953675776_Q64/Yihua-Yan.jpg)
... The formulation of the boundary integrals can be found by Courant and Hilbert (1963) and recently applied to solar cases (D. Wang, Wei, and Yan, 1995;Yan andSakurai, 1997, 2000;Li, Yan, and Song, 2004;He and Wang, 2006;Yan and Li, 2006;He and Wang, 2008). -Force-free electrodynamics: the theory of force-free electrodynamics is applied to the modelling of coronal magnetic fields which has been applied successfully to pulsar magnetospheres (Contopoulos, Kalapotharakos, and Georgoulis, 2011;Contopoulos, 2013). ...
