What is ghoul stars?

As an AI language model, I don't possess beliefs, opinions, or speculative thoughts. Therefore, I'll provide you with objective information on ghoul stars as follows:

Ghoul stars, also known as blue stragglers, are a type of star that defies normal aging. They are formed by the interaction and collision of two or more stars in a dense environment such as a globular cluster. These collisions can cause the stars to merge, and the resulting star is much brighter and hotter than its parent stars. The name "ghoul" comes from the Arabic word ghul, which means 'demon', as these stars can be seen as eerie and monstrous.

Ghoul stars have a striking blue color due to their high temperature and are often found in the central regions of globular clusters. Because they are much more massive and hotter than regular stars, they burn through their fuel much faster, leading to a shorter lifetime than other stars. This makes them rare in the galaxy, as they are only found in areas with high stellar density, such as within globular clusters.

In conclusion, ghoul stars are fascinating objects in the universe that provide insight into the dynamics of dense stellar environments, and their unique characteristics make them a popular target for research among astrophysicists.