THE IDENTIFICATION OF <i>z</i> -DROPOUTS IN PAN-STARRS1: THREE QUASARS AT 6.5< <i>z</i> < 6.7
THE IDENTIFICATION OF <i>z</i> -DROPOUTS IN PAN-STARRS1: THREE QUASARS AT 6.5< <i>z</i> < 6.7
Luminous distant quasars are unique probes of the high-redshift intergalactic medium (IGM) and of the growth of massive galaxies and black holes in the early universe. Absorption due to neutral hydrogen in the IGM makes quasars beyond a redshift of very faint in the optical z band, thus locating quasars …