The material that obscures supermassive black holes

(Instituto de Astrofísica de Canarias (IAC)) Cristina Ramos Almeida, researcher at the IAC, and Claudio Ricci, from the Institute of Astronomy of the Universidad Católica de Chile, publish a review in Nature Astronomy of the most recent results on the material that obscures active galactic nuclei obtained from infrared and X-ray observations, their respective fields of research.