The Data Big Bang and the Expanding Digital Universe: High-Dimensional, Complex and Massive Data Sets in an Inflationary Epoch
Figure 4
Three different visualizations of the bow shock structure [28]. (a) IC 405, Spitzer IRAC camera 8.0 m image, the bow shock (red crosses) near HD 34078. The brightness is proportional to the flux (logarithmic scale). (b) The bow shock area where the brightness is proportional to the module of the gradient of flux (logarithmic scale). (c) The bow shock area where the front of the bow shock is immediately apparent as a curve of 1 pixel width (red crosses); the brightness is proportional to the angle of the gradient of flux (logarithmic scale).
