Arrowhead supercluster seen in dark outline in a slice in supergalactic coordinates: horizontal ﹩-6470\lt \mathrm{SGX}\lt +6280﹩ km s⁻¹; vertical ﹩-1900\lt \mathrm{SGY}\lt +7660﹩ km s⁻¹; thickness ﹩-500\lt \mathrm{SGZ}\lt +1500﹩ km s⁻¹. The Milky Way galaxy is at the origin of the red and green arrows, 1000 km s⁻¹ in length, red toward +SGX and green toward +SGY. A blue arrow toward +SGZ, directed out of the page here, is seen in subsequent figures. Colored contours represent density levels as reconstructed by the Wiener Filter analysis with red at high densities, green intermediate, and blue at low densities. The semi-transparent surfaces represent an intermediate contour in density. The white lines illustrate velocity flow patterns initiated at selected seed positions showing flows both internal to Arrowhead and away, alternatively toward Laniakea, Perseus–Pisces, or Coma. The Arrowhead Supercluster is bracketed by the small Virgo Void and extensive Far Arrowhead Void in this projection. This scene appears at 00:40 in the accompanying video.

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.