Identifying an astronomy paper from a figure

[mhob]

I was impressive with that paper but someone has deleted it from my computer, left only this figure from it.

 

[Doc Al]

Do a Google search on the image and it will lead you right to the source. Looks like "Three little pieces for computer and relativity" by Luciano Rezzolla.

 

[mhob]

Iz rite! Thanks a lot.