Compton scattering

The charged particles spiral around the axial magnetic fields and emit photons as they do.

The other is inverse Compton scattering.

Particles in the jet bump into existing photons, perhaps synchrotron photons, and scatter them to higher energies and preferentially in the direction of the flow.

In both cases, photons are emitted in different directions, but an effect called relativistic beaming massively amplifies our perceived brightness of the light emitted in the same direction as the near-light-speed charged particles of the jet.

So what's generating all of those gamma rays? The current theory is that the outer jets contain high energy electrons that can bump into lower energy photons passing through the system, and they transfer their energies to the photons during those collisions.

This process goes by the name of inverse Compton scattering.

The scientists at HESS realized that measuring the energy in these emitted gamma rays can give us a lot of information about the energy of the electrons in the jets that produced them in the first place.

And what they found was in full support of the inverse Compton scattering theory.

The highest energy gamma rays carrying over 10 tera electron volts of energy per photon, or about 10 trillion times more energy than a photon of visible light, were primarily coming from the innermost region of the outer jets.

Gamma rays with lower energies on the other hand, came from correspondingly farther distances down the jets of S433.

It has to be.

The software calculates the exact scattering of photons, the photoelectric absorption, and the Compton scattering as the virtual X-ray beam passes through different densities of virtual bone, muscle, and the titanium of the CAD model.

So you shoot a virtual beam through a virtual patient to produce a 2D synthetic radiograph.

Exactly.

Exactly.

They are undergoing intense Compton scattering.

Well, the gas envelope is so optically thick that a high-energy X-ray photon cannot just travel in a straight line out into space.

Right.