Peter Nugent

TL;DR: In this article, the authors show that long-duration γ-ray bursts are associated with the most extremely massive stars and may be restricted to galaxies of limited chemical evolution. But they also show that the host galaxies of the long-drone bursts are significantly fainter and more irregular than the hosts of the core-collapse supernovae.

TL;DR: A measurement of the Hubble constant is reported that combines the distance to the source inferred purely from the gravitational-wave signal with the recession velocity inferred from measurements of the redshift using the electromagnetic data.

TL;DR: In this article, the authors presented photometric observations of an apparent Type Ia supernova (SN Ia) at a redshift of 1.7, the farthest SN observed to date.

TL;DR: The Palomar Transient Factory (PTF) as discussed by the authors is a wide-field experiment designed to investigate the optical transient and variable sky on time scales from minutes to years, and it uses the CFH12k mosaic camera, with a field of view of 7.9 degrees and a plate scale of 1 inch pixel.

TL;DR: The DESI Legacy Imaging Surveys project as discussed by the authors is a combination of three public projects (the Dark Energy Camera Legacy Survey, the Beijing-Arizona Sky Survey, and the Mayall z-band Legacy Survey) that will jointly image approximately 14,000 deg^2 of the extragalactic sky visible from the northern hemisphere in three optical bands (g, r, and z) using telescopes at the Kitt Peak National Observatory and the Cerro Tololo Inter-American Observatory.