The radio emission anomaly coincident with the 2016 glitch of Vela pulsar may be caused by a star quake that launches Alfv\'{e}n waves into magnetosphere, disturbing original emitting region. To quantify lifetime waves, we investigate possible energy loss mechanism, conversion Alfv\'{e}nwaves fast magnetosonic waves. Using axisymmetric force-free simulations, follow propagation launched from st...

Electron cyclotron heating of high density plasmas is limited due to so-called wave cut-offs. The double mode conversion scheme from O-mode to X-mode and finally to Bernstein mode O-X-B offers the possibility to overcome this limit [1]-[4]. At a particular launching angle, an O-mode wave converts to X-mode at the plasma cut-off. The power transmission function T from Oto X-mode was derived in [...

Recent results on determining the spatial profile of the emission source distribution from a cyclotron mode conversion layer are extended to the five branch wave coupling case which occurs when the X-mode is coupled to the O-mode. A variational problem for an inhomogeneous source is formulated and solved. Computations demonstrate that the basic features, including a highly localized emitter, ar...

Mode conversion in the region where the sound and Alfvén speeds are equal is a complex process, which has been studied both analytically and numerically, and has been seen in observations. In order to further the understanding of this process we set up a simple, onedimensional model, and examine wave propagation through this system using a combination of analytical and numerical techniques. Sim...

We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs). Numerical simulations demonstrate that the zeroth order of transverse magnetic mode or the first order of transverse electric mode (TM0/TE1) can be converted into the first order of transverse magnetic mode or the second order of transverse electric mode (TM1/TE2) for a broadband of frequen...