Nice picture, it represents a calculation based on two forms of radiation. The magnetosphere blocks a good bit of it. The model is flawed in that it doesn't show the borealis effect effect caused by the interaction of the radiation, also misrepresented as solar wind, with the wobbling around of the pole.

Now for the devil that resides in the details. If you have a one square centimeter object as represented by the frontal area exposed by the obect, and the objects' mass was equivalent to one gram, it would take something around 7 thousand years to accelerate it to the stupendous speed of one meter per year of movement. And that is if you can hold pv squared at a solid one. Which you can't. The only thing this does is re-inforce my contention that the tail on the comet is at least partially an illusion.

You see, if we assume that the ice crystals formed by sublimation in space are the same as the ones formed in calm conditions on a very cold northern night they will look like very flat little pancakes with six equal sides. Other types of crystals grown in micro g show great resembleance to those grown on earth, only a higher percenage of the ones grown in micro g end up perfect. For the optical effect to work a high percentage of the crystals have to align exactly the same way. Otherwise all you get is a lot of sparkly lights like you do when ice starts to freeze on pavement. Pretty but no special effects. Here in Alaska you get that because the flat little crystals, and they are litte, it takes 10 of them side by side to equal the diameter of a human hair, fall out of the air at a very slow rate as the acceleration of gravity is only barely enough to offset the drag of the air. Thus as they fall thru the air they act like little parachutes and are all aligned on the flat axis. This allows the effect of a beam of light to appear above the street lights in an area that is in effect in a shadow. The same may be true of the comet and the beam of light that appears in its shadow.

In Space there is no air, or very little of it and thus there has to be something to make the crystals align as they fall toward the sun along with the comet. Here is where solar wind comes in. It is strong enough to align small crystals especially at the speed they are moving. If anything should disturb the flow of radiation or solar wind, what ever you wish to call it, the crystals could start to oscilate and give the apearance of the tail curving or meandering around like a serpent. There are old stories of serpents that live in the sky. A long comet tail and a wavering solar wind or radiation storm could possibly be responsible.