Gamma-ray bursts (GRBs) serve as powerful probes of the early universe, with their
luminous afterglows revealing the locations and physical properties of star-forming galaxies …

We have gathered optical photometry data from the literature on a large sample of Swift-era
gamma-ray burst (GRB) afterglows including GRBs up to 2009 September, for a total of 76 …

Ten years of operations of the Swift satellite have allowed us to collect a small sample of
long Gamma-Ray Bursts (GRBs) at redshift larger than 6. I will review here the present status …

ABSTRACT We introduce the Swift Gamma-Ray Burst Host Galaxy Legacy Survey ("
SHOALS"), a multi-observatory high-redshift galaxy survey targeting the largest unbiased …

Since the launch of the highly successful and ongoing Swift mission, the field of gamma-ray
bursts (GRBs) has undergone a revolution. The arcsecond GRB localizations available …

The large amounts of dust detected in sub-millimeter galaxies and quasars at high redshift
pose a challenge to galaxy formation models and theories of cosmic dust formation. At z> 6 …

Context. The afterglows and host galaxies of long gamma-ray bursts (GRBs) offer unique
opportunities to study star-forming galaxies in the high-z Universe. Until recently, however …

We present a semi-analytical model for the formation and evolution of a high-redshift quasar
(QSO). We reconstruct a set of hierarchical merger histories of a 1013-M⊙ dark matter halo …

Well-sampled optical light curves of 146 gamma-ray bursts (GRBs) are compiled from the
literature. By empirical fitting, we identify eight possible emission components and …

We analyze the optical-near infrared spectra of 33 quasars with redshifts 3.9≤ z≤ 6.4 to
investigate the properties of dust extinction at these cosmic epochs. The SMC extinction …