I was watching Sabine Hossenfelder’s video titled I stopped working on black hole information loss. Here’s why. It inspired some ideas.
A black hole’s charge and angular momentum would cause a magnetic field (Maxwell’s Law) to accelerate accreting matter into relativistic jets, as we can observe. Matter spirals around, orbiting the black hole’s equator, and falls inward toward the black hole event horizon. Some or all of this in-falling matter is redirected to jets firing out from the poles of black hole, and this matter is accelerated to relativistic speeds (near the speed of light). This involves a huge transfer of energy from the black hole to the matter from the accretion disc.
Could that transfer of energy carry information away from the black hole? Maybe this hypothesis isn’t sufficient by itself to explain how a black hole’s mass shrinks — only how its angular momentum slows.
We can also hypothesize the magnetic field is strong enough to produce pairs of particles that add to the jets. Photons of the magnetic field collide to create electron-positron pairs. Now we have a mechanism, pair production, for mass to escape the black hole in a manner that is distinct from Hawking (thermal) radiation. That would be how information flows out, so it is not lost.
In my hubris, I sometimes write emails to established scientists with my stupid ideas. I have a knack for formulating what I believe to be good questions. Here is what I sent to Netta Engelhardt at MIT this morning on the topic of black hole jets.
I appreciate the videos you’ve done on YouTube on black holes.
Some rhetorical questions come to mind. I don’t expect an answer. My intention is to ask them, in case they help stimulate some curiosity toward maybe forming a useful idea.
- How much of the mass that is falling into a black hole adds to the mass of the black hole, versus being ejected, say through its jets?
- Can we think of the jets as carrying information away from the black hole, given that the BH is accelerating the outbound particles substantially, thereby transferring energy from it?
- Wouldn’t (2) then be consistent with a model whereby all information about the BH is thought to be encoded on its boundary, for accreted matter to be seen as sticking to the boundary as it falls in, and over time that same information migrating to the poles of the BH and ejected through its jets?
It just seems to me, as a layman, that black hole jets are such a prominent feature, but I haven’t seen much talk about what mechanisms generate these jets, and what are their relationships to the flow of energy and information into and out of the black hole.