Galactic Center threads as nuclear magnetohydrodynamic waves
Yoshiaki Sofue
Abstract
Abstract Propagation of fast-mode magnetohydrodynamic (MHD) compression waves is traced in the Galactic Center with a poloidal magnetic cylinder. MHD waves ejected from the nucleus are reflected and guided along the magnetic field, exhibiting vertically stretched fronts. The radio threads and non-thermal filaments are explained as due to tangential views of the waves driven by sporadic activity in Sgr A$^*$, or by multiple supernovae. In the latter case, the threads could be extremely deformed relics of old supernova remnants exploded in the nucleus.
Topics & Concepts
PhysicsMagnetohydrodynamic driveGalactic CenterMagnetohydrodynamicsAstrophysicsCenter (category theory)AstronomyPlasmaNuclear physicsGalaxyCrystallographyChemistryAstrophysics and Cosmic PhenomenaGamma-ray bursts and supernovaePulsars and Gravitational Waves Research