Today I casually ran into a very nice figure which is perfect for an entry as "guess the plot", both because of its mysterious appearance, and because of the interesting physics it hides. It is a two-dimensional "surface" and its shape should tell you something. For the moment, I will just say it is something which has to do with both particle physics and astrophysics, and that it is quite cool, being a new way of looking at something we know well.



So please let me know what you guess that plot might represent, using the comments thread below! I would like to know: 1) what does the figure show; 2) what is in the horizontal and vertical axis. Take a shot, it's free!