We cannot make the monitor brighter than the monitor will go, if that's what you are wondering. If you set a white background for your desktop, you could get an idea of the brightest you will see. But it doesn't do the sun flare effect justice, since the meat of the effect is in the saturation of other colors toward that bright white.

The closest analogy that I imagine most people would be familiar with is the flashbang effect in counterstrike.