Speaker
Vinod Viswambharan Pisharody
(Szkoła Główna Mikołaja Kopernika (SGMK))
Description
We present a new module to the multi–fluid, grid based MHD code PIERNIK, which is based on the HLLD Riemann solver . The original scheme has been extended by an addition of interacting cosmic rays (CR) . We use the two-moment approach by Jiang et.al. (Astrophys.J. 854 (2018) 1, 5) to implement the dynamics of the cosmic ray fluid. In this work we present the implementation and validation of the new module as well as its application to several relevant astrophysical test problems. This extension enables us to study CR-driven dynamics and MHD dynamos in galactic disks, where the interplay of streaming and diffusion of CR regulates gas flows and magnetic-field amplification.
Primary authors
Prof.
Michał Hanasz
(Centre for Astronomy, Nicholas Copernicus University)
Vinod Viswambharan Pisharody
(Szkoła Główna Mikołaja Kopernika (SGMK))