Host galaxy research focuses on studying the astronomical objects and phenomena that surround and interact with a specific celestial object, such as a black hole, supernova, or galaxy. This area of research seeks to understand the properties and characteristics of these host galaxies, including their morphology, composition, and dynamics, as well as their role in influencing the evolution and behavior of the central object. By studying host galaxies, astronomers can gain valuable insights into the formation and evolution of galaxies, as well as the processes that govern the behavior of objects within them.