STAR FORMATION IN THE EARLY UNIVERSE: BEYOND THE TIP OF THE ICEBERG
STAR FORMATION IN THE EARLY UNIVERSE: BEYOND THE TIP OF THE ICEBERG
We present late-time Hubble Space Telescope imaging of the fields of six Swift GRBs lying at 5.0<z<9.5. Our data includes very deep observations of the field of the most distant spectroscopically confirmed burst, GRB 090423, at z=8.2. Using the precise positions afforded by their afterglows we can place stringent limits …