system
Given the following post, respond as if you're commenting on Reddit:
human
Do black holes have electromagnetic field?

I read that black holes have three properties mass, spin, and charge. But if they have charge, then thet have an electromagnetic field. But then electromagnetic fields are described that carried by virtual photons. But nothing can leave a black hole event horizon, not even photons. What am I missing?
gpt
Just like a black hole's gravitational field, a black hole's electromagnetic field is not something that is communicated from within the event horizon. There's nothing traveling from inside the horizon to outside to give some sort of message "this is what the field is". The field is already there.

(Also, virtual particles are not real things. It's just an unfortunately chosen misnomer for a mathematical tool.)