Nicholas R. MacDonald

TL;DR: In this article, the Event Horizon Telescope was used to reconstruct event-horizon-scale images of the supermassive black hole candidate in the center of the giant elliptical galaxy M87.

TL;DR: SDSS-III as discussed by the authors is a program of four spectroscopic surveys on three scientific themes: dark energy and cosmological parameters, the history and structure of the Milky Way, and the population of giant planets around other stars.

TL;DR: In this paper, the Sloan Digital Sky Survey III (SDSS-III) presented the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS), along with the data presented in previous data releases.

TL;DR: The first data release of SDSS-III (and the eighth counting from the beginning of the Sloan Digital Sky Survey (SDSS) is described in this paper, which includes five-band imaging of roughly 5200 deg^2 in the Southern Galactic Cap.

TL;DR: In this article, the authors present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign, and find that >50% of the total flux at arcsecond scales comes from near the horizon and that the emission is dramatically suppressed interior to this region by a factor >10, providing direct evidence of the predicted shadow of a black hole.