Interstellar Medium: The Interstellar Medium (ISM) is the matter and radiation that exists in the space between the star systems in a galaxy. It includes gas, dust, and plasma, and plays a significant role in the formation and evolution of stars and galaxies.
Cosmic Rays: Cosmic Rays are high-energy particles, primarily protons and atomic nuclei, that originate from various sources within and outside our galaxy. The Interstellar Magnetic Field influences the trajectory and behavior of these cosmic rays as they travel through the interstellar space.
Magnetohydrodynamics: Magnetohydrodynamics (MHD) is the study of the dynamics of electrically conducting fluids, such as plasma, in the presence of magnetic fields. It is a crucial framework for understanding the behavior of the Interstellar Magnetic Field and its interactions with the Interstellar Medium.