Preview of an interactive visualization of the FLIMFLAM foreground redshifts in the FRB 20190520B field (click on this URL for an external copy). The gray points indicate galaxies with measured spectroscopic redshifts, with their positions on the sky shown as a relative angular offset from the FRB 20190520B coordinate (i.e., the FRB is at [0, 0]). In the online version, pan dragging and zooming is supported (tool bar on top), while hovering over an individual galaxy with the mouse will show the coordinate and redshift. Clicking on the legend on the right will highlight galaxy groups labeled by redshift, with group members marked with crosses and the physical extent of r ₂₀₀ indicated by dashed circles. In the static preview, we have highlighted the clusters at z _grp = 0.1867 and 0.2170 that are believed to provide large contributions to DM_halos. The interactive figure is available in the online journal. The data behind this figure are included in machine-readable format with the .tar.gz package.

(The data used to create this figure are available.) An interactive version of this figure is available.

An interactive version of this figure is available in the online journal.