Does blackhole have strong magnetic field?

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Does blackhole have strong magnetic field??

As we all known: neutron-star has strong magnetic field! Does blackhole have strong magnetic field too??
Thank you in advance!
 

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A quick Google on "black hole magnetic" yields this interesting article by Physorg.com: http://www.physorg.com/news79361214.html , titled "Scientists Determine the Nature of Black Hole Jets."

They say:
"Black hole jets are one of the great paradoxes in astronomy," said Rita Sambruna of NASA's Goddard Space Flight Center, Greenbelt, Md. "How is it that black holes, so efficient at pulling matter in, can also accelerate matter away at near light speed? We still don't know how these jets form, but at least we now have a solid idea about what they're made of."
However, it is not clear why these jets generate a magnetic field since we are not sure of what exactly they are made of. Further:
The composition of black hole jets has been the topic of heated debate for several decades. Scientists generally agree that the jets must be made either of electrons and their antimatter partners, called positrons, or an even mix of electrons and protons. Recent theoretical and observational advances have pointed in the direction of the latter. The Swift data provides the most compelling evidence to date that the jets must have protons.
So if these near light speed jets of protons are zooming out both ends of the black hole axis, they generate a magnetic field similar to quasars and neutron stars. But what's inside the black hole to generate this protons, positron stream? Much more study is needed to better understand this galactic phenomenon, since it seems most if not all galaxies have some super massive black hole in their centers. Another interesting NewScientist.com article: http://space.newscientist.com/artic...k-hole-the-ultimate-particle-accelerator.html , which says the black hole's magnetic field is a giant particle accelerator. Hope this helps.
 
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Thank you !
 

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