Riemann solvers and Alfven waves in black hole magnetospheres

• DOI: 10.1186/s40668-016-0018-1
• Publication Date: 2016-09-13T12:06:31Z
• Authors: Brian Punsly; Dinshaw Balsara; Jinho Kim; Sudip Garain
• Keywords: Alfvén wave; Landau damping

In the magnetosphere of a rotating black hole, an inner Alfven critical surface (IACS) must be crossed by inflowing plasma. Inside IACS, waves are inward directed toward hole. The majority proper volume active region spacetime (the ergosphere) is inside IACS. charge and totally transverse momentum flux to both wave normal unperturbed magnetic field) determined exclusively polarization. Thus, it important for numerical simulations hole magnetospheres minimize dissipation waves. Elements dissipated emerge in adjacent cells regardless there no mechanism prevent Alfvenic information from crossing outward. can affect how simulated attain substantial Goldreich-Julian density associated with field. order help relativistic we have formulated one-dimensional Riemann solver, called HLLI, which incorporates discontinuity contact discontinuity. We also multidimensional MuSIC, that enables low propagation multiple dimensions. importance higher schemes lowering catalogued.