Q&A: Black Holes
If it is true that the magnetic field of a black hole is so
strong that even light can't escape it ,what will happen when
one black hole comes under the influence of the magnetic
field of another black hole?
It is the gravitational field, not the magnetic field, of a
black hole that is so strong that it captures light. If two
black holes collide, calculations indicate that they will
merge to form a larger, more massive black hole. Large
amounts of gravitational waves may be produced in such a
merger, which is why scientists are excited by the prospect
of gravitational wave observatories. See http://lisa.nasa.gov.