Tuesday, May 15, 2018

quantum mechanics - Do magnetic fields exist beyond the gravity of a black hole?


http://www.sciencealert.com/the-magnetic-field-just-outside-our-black-hole-has-been-studied-for-the-first-time reported strong magnetic fields escape out of black holes. Does that rule out photons being a component off a magnetic field since light/photon are trapped by the black hole?


enter image description here


enter image description here



Answer



I want to address this:




Does that rule out photons being a component off a magnetic field since light/photon are trapped by the black hole?



It is simpler to think of magnetic fields within classical electrodynamics.


The magnetic field can be described quantum mechanically as the result of virtual photon exchanges. See my answer here on how this happens, and in the answer to the duplicate question.


To introduce virtual photons in the strong mix of the gravitational field of the black hole will not aid in understanding what is happening and in the end it will give the same mathematical result following a much more complicated path.


No comments:

Post a Comment

classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...