Yes, there are more images - try this link,
http://images.google.com/images?q=sun+d ... s&ct=title
Nor do I know much about parhelia, only that they form due to ice crystals in the atmosphere and are more common to colder climates (oh, duh) and, like the many rainbows where I live, always look for a second one, wider out and fainter, it is usually there.
Here is a diagram showing the parts of Sun halo and optical phenomena that may occur alone or with the sun dogs, such as the "V" of light in your friend's lucky photo.
http://hyperphysics.phy-astr.gsu.edu/hb ... lo.html#c1
The "V" atop the halo with arc above it is extremely rare, much more so than just the sun dogs. The "V" is called an upper tangent arc and the arc above it is called a Parry arc and, according to one site, occurs only a few times per year. The "V" only appears while the Sun is closer to the horizon, therefore does not last as long as the sun dogs. It does not necessarily occur with colors. Compare to sun dog occurence 60 to 90 times per year in certain climates, the V about 20 to 30 and Parry are just a few. Even so, sun dogs do not always have the vibrant rainbow colors that you described, and the Parry arc is not always with the dramatic V. - When the Sun is higher up the arc flattens concave towards the Sun, and even higher it moves from the top to under the Sun (on the halo ring). I have seen concave Parry arcs, top and bottom, but not yet the V.
Sometimes there is a second halo complete with light show, although much fainter. It is easy to overlook because it is so far out from the brighter inner halo. If you ever see a Sun halo or parhelia again look for the 2nd halo.
Some have speculated that the sparkling 'wheel within a wheel' from Ezekiel's vision was a double Sun halo ice crystal phenonmena. Personally, I neither claim nor deny this proposal, but I find it highly interesting that a biblical vision of heavenly angels so closely parallels celestial phenomena. Ezekiel's Cherubim guard and support the Throne and Chariot of God. Sun dogs relate similarly to the Sun (god).
If you and your friend witnessed numerous halo phenonmena combined - Sun, halo with rainbow colors and parhelia, sun pillar, and crowning V-shaped Parry arc - it was a rare and fortunate sight indeed!
Christina