Q:

Collision or impact of a gamma-ray burst against the magnetic bubbles at Solar System's edge

I'm going to ask* about what should be the effect/interaction, if any, when a gamma-ray burst crashes or hits against the magnetic bubbles at Solar System's edge. These magnetic bubbles are explained in [1] from YouTube. I add also as reference this Wikipedia Gamma-ray burst.

Question. Is it possible to say anything about the interaction, the physics, of an impact of a great gamma-ray burst against/going through the magnetic bubbles of a solar system similar than ours? And, additionally, as a secondary question, what happens if the gamma-ray burst does not collide/impact, but passes near the magnetic bubbles, let's say tangentially? Many thanks.

I hope that it is possible say something about it (I evoke what work can be done to elucidate something about my questions). If you know references about what should to be the effect of the expected phenomenom or physics after a 
collisions of a gamma-ray burst and this kind magnetic bubbles of planetary systems similar than ours, feel free to refer it and I try to search and read it from the literature.
References:
[1] NASA  |Voyager Finds Magnetic Bubbles at Solar System's Edge, from the official channel NASA Goddard of YouTube (June, 9th 2011).

A:

First, be careful with popular science or press release reports and their terminology.  Second, gamma-rays are at such high frequencies (i.e., orders of magnitude above the plasma frequency), they do not care about the low density plasma or it's magnetic field at the edge of the heliosphere.  I do not know what the cross-sections are, off hand, between gamma-rays and thermal electrons or protons, but I can't imagine they are large enough for anything statistically meaningful to happen.  That is, a few interactions may occur and may cause a few particles to gain energy (or some other particle production but I'm not a particle physicist so I defer to the experts on that) but only a few particles.
The point is that one could observe the gamma-rays and one could observe the particles, but I very much doubt anything interesting would occur.

