An oblique pulsar magnetosphere with a plasma conductivity

作者：Cao, Gang; Zhang, Li^*; Sun, Sineng

来源：Monthly Notices of the Royal Astronomical Society, 2016, 461(1): 1068-1075.

DOI：10.1093/mnras/stw1379

• magnetic fields
• MHD
• methods: numerical
• pulsars: general

An oblique pulsar magnetosphere with a plasma conductivity is studied by using a pseudospectral method. In the pseudo-spectral method, the time-dependent Maxwell equations are solved, both electric and magnetic fields are expanded in terms of the vector spherical harmonic functions in spherical geometry and the divergencelessness of magnetic field is analytically enforced by a projection method. The pulsar magnetospheres in infinite (i.e., force free approximation) and finite conductivities are simulated and a family of solutions that smoothly transition from the Deutsch vacuum solution to the force-free solution are obtained. The sin(2)alpha dependence of the spin-down luminosity on the magnetic inclination angle a in which the full electric current density are taken into account is retrieved in the force-free regime.

• 出版日期2016-9-1
• 单位云南大学