It might come from a merging galaxy, either gas and stars, or even another black hole falling into an existing black hole. It might also be a large amount of the hot X-ray emitting gas that cooled to low temperature. Either way, it would represent the tail end of galaxy formation. |
The cavities and shock will dissipate, leaving behind very little trace of their existence. |
The interesting issue is, what is the source of the fuel in this case? |
We think that the main effect of eruptions like this is to stop stars from forming by preventing hot gas from cooling down. |