Question about black holes

Status
Not open for further replies.
C

Celli

Guest
If the black holes, by definition don't emit radiation, where does the emitted radiation to explain the luminosity of quasars? Can anyone explain me, please? I really don't understand it. :(

Thanks already. :D

PS: I'm sorry if I made any mistake in grammar. I'm still learning English. [?]
 
N

nimbus

Guest
That's right: so if you continue this line of thought, the emissions must come from outside of the event horizon. What could happen outside the event horizon, but still near the black holes, that would cause emissions? Matter is falling into the black hole, going from mundane speeds, to event horizon speeds and densities.
 
C

CalliArcale

Guest
To extend that a little further, this means that the only black holes we can detect by their radiation are ones which are actively "feeding". A quiescent black hole is undetectable except by its gravitational influence on other objects -- which means there are probably quite a lot more of them than we've identified.
 
Status
Not open for further replies.