If a black hole isn't "fed" by attracted matter, it disappears someday.しかし、それはどうして可能でしょうか？その特異点での質量はどうなりますか？ It can't just disappear or am I wrong with some…
Context: I want to simulate globular clusters in a simple way, just to display the positions of stars. Assuming isotropy, what would be a reasonable model of the stellar number density as a funct…
