Motion of Interstellar Dust Grains Under Radiation Pressure

Though interstellar dust mass is negligible compared to the stars and the interstellar gas, it is in continuous contact with the rest of the world instead of being an isolated entity. Interstellar dust mass significantly influences the star formation process and its appearance. Hence it is important to study how it interacts with its environment. Here, we try to understand the motion of interstellar dust grains in the presence of the forces, viz., the drag force due to the interstellar gas and the radiation pressure due to a nearby star.