All Questions
3
questions
-2
votes
1
answer
118
views
How can a black hole have electromagnetic field? [duplicate]
I know that everything that is shaped from gravity force is rotating, and gravity is a central force, but I want to know how we can understand that a black hole has an angular momentum? By which sign ...
- 39
1
vote
1
answer
145
views
If an event horizon never forms for an outside observer, then what do (or don't) we see in the middle area on this real image of an actual black hole?
There are a lot of questions about the m87 image on this site, non of them actually answer my question.
I have read this question:
Does an expanding event horizon "swallow" nearby objects?
...
- 29k
1
vote
1
answer
127
views
If the photon is the force-carrier for the electromagnetic force, how does the electric charge of a black hole escape the event horizon? [duplicate]
When people speak of the electric charge of a black hole, do we actually mean it affects things outside of the event-horizon or is it just a property it has?
- 111