Definition of Halo Mass: Understanding Dark Matter Halos

Halo mass refers to the total mass contained within a dark matter halo, which is a large, spherical region of space that forms around galaxies and other massive objects. Halo mass is typically measured in terms of solar masses, with one solar mass equivalent to the mass of the sun. The halo mass of a galaxy or other object is an important factor in determining its gravitational influence on other objects and its overall structure and behavior.