Nine quasar pair fields JCMT/SCUBA-2 data

In this work, we study the Megaparsec environment surrounding nine physically associated quasar pairs between z=2.45 and z=3.82 with JCMT/SCUBA-2 observations at 450{mu}m and 850{mu}m covering a field of view of roughly 13.7 arcmin in diameter (or 32Mpc^2^ at the median redshift) for each system.

We identify a total of 170 SMG candidates and 26 non-SMG and interloper candidates. A comparison of the underlying 850{mu}m source models recovered with Monte Carlo simulations to the blank field model reveals galaxy overdensities in all fields, with a weighted average overdensity factor of delta_cumul_=3.4+/-0.3. From this excess emission at 850{mu}m, we calculate a star formation rate density of 1700+/-100M_{sun}_/yr/Mpc^3^, consistent with predictions from protocluster simulations and observations.