RECENT DISCOVERIES OF HIGH-REDSHIFT QUASARS (Z > 4.5) HAVE PROVIDED NEW OPPORTUNITIES TO INVESTIGATE FUNDAMENTAL PROPERTIES OF THE EARLY UNIVERSE. X-RAY OBSERVATIONS OF THIS QUASAR POPULATION ARE ESPECIALLY IMPORTANT FOR STUDIES OF BLACK HOLE
$53,346FY2021National Aeronautics and Space AdministrationNASA
Smithsonian Institution, Washington DC