From what I read recently it seems that a different mechanism where the black hole rotation speed is decreased when the particles are ejected was also suggested.
Accordingly rotation energy is transformed to mass
I am not sure your answer is what field theory in curved spacetime argues. To my understanding field theory in curved spacetime allows formation of matter in curved space, and spacetime around black holes is curved.
I think the question is quantitative, if matter is formed in very big...
I thought that this might be the answer (not known yet) but I was not sure.
If black holes are active and continuous sources of matter they might replace the big bang theory that assumes that all matter was created in one singular in space and time event and such continuous and scattered all...
OK, and thanks for the paper's pointers!
What do you think on the other questions and particularly - Is the total mass fired by the jets bigger or smaller than the total matter that falls into the black hole?
Hi Bill,
I found interesting article discussing Penrose process-
http://www.ias.ac.in/jarch/jaa/6/85-100.pdf
The authors conclude that black hole rotational energy can be reduced and extracted by the escaping particles where the escaping particles becomes more energetic than the first falling...
Does anyone know if Einstein equation predicts the existence of particle jets fired by massive black holes observed by NASA from active galaxies?
If yes, what would be the predicted relation between the black hole mass and rotation speed to the flux of matter ejected, how long these jets...
The Hawking radiation theory includes emitted particles and accordingly the black hole loose mass and evaporates slowly -
http://en.wikipedia.org/wiki/Hawking_radiation#Emission_process
Thanks, the paper is interesting and it shows that the energy balance and the processes that occur at AGNs are not understood very well. Since the paper describes periodic outbursts of energy from the AGNs, maybe they operate like a heat engines and it would be nice if under some physical...
I am not familiar with the steady state approximation applied to an AGN system that includes a black hole, infalling matter from accertion disk and outgoing matter by the jets. Can you send me a reference for such estimation/calculation?
Thanks,
Rami.
Thanks for the pointer. Please note the two quotes from the article -
"Vast storms of particles are falling to their doom at close to the speed of light, raising the temperature to millions of degrees."
and
"We still do not know exactly how the infalling matter is turned into the...
I am looking for a different answer which is:
we do not know, the system is too complex, too many parameters are unknown and a detailed calculation of how much matter falls in and how much matter is thrown out with different temperaure of the AGN and taking into account the curved spacetime...
Hawking Radiation and AGN's Jets
Can field theory in curved space and Hawking radiation processes be used to answer the following question - is the total mass falling into an AGN black hole bigger or smaller comparing to the total mass thrown out by the AGN relativistic particles jets?
Thanks...
What about Hawking radiation that decreases the black hole mass and possibly the conversion of heat to matter close the the black hole event horizon where spacetime is curved and particles may be created and where the temperature is extremely high due to the infalling matter from the accertion...
General Relativity and the AGNs particles jets
Can general relativity theory be used to answer the following question - is the total mass falling into an AGN black hole bigger or smaller comparing to the total mass thrown out by the AGN relativistic particles jets?