MUltiwavelength study of ELAN environments

By analysing the SCUBA-2 data with self-consistent Monte Carlo simulations to construct the number counts, here, we report on the overabundance of 850{mu}m-selected submillimeter sources around all the four ELANe, by a factor of 3.6+/-0.6 (weighted average) compared to the blank fields.

This suggests that the excessive number of submillimeter sources are likely to be part of the Mpc-scale environment around the ELANe, corroborating the co-evolution scenario for SMGs and quasars; this is a process which may be more commonly observed in the ELAN fields. If the current form of the underlying count models continues toward the fainter end, our results would suggest an excess of the 850{mu}m extragalactic background light by a factor of between 2-10, an indication of significant background light fluctuations on the survey scales.