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A team of scientists, including researchers in the University of Southampton’s School of Physics and Astronomy, have shown that black holes are not the only known objects in the universe to produce infrared light from beams of particles being shot into space at nearly the speed of light. 

(http://www.everything-science.com//images/stories/binary.jpg)

[span class=imagecaption]A computer-generated visualisation of a black hole or neutron star X-ray binary system is available from Media Relations on request. The image was produced using a visualisation tool provided by Rob Hynes of the Louisiana State University, USA.[/span]

Previously, these steady ‘relativistic jets’ were only seen from black holes which form part of a black hole X-ray binary, a system con. . .

I imagine that there are intense EM fields involved in the vicinity of black holes and neutrons stars, especially magnetars.

http://solomon.as.utexas.edu/~duncan/magnetar.html