Discovery of a Clustered Quasar Pair at z ~ 5: Biased Peaks in Early Structure Formation

S. G. Djorgovski, D. Stern, A. Mahabal +1

We report a discovery of a quasar at z = 4.96 +- 0.03 within a few Mpc of the quasar SDSS 0338+0021 at z = 5.02 +- 0.02. The newly found quasar has the SDSS i and z magnitudes of ~…