Patricia Bessiere, a researcher at the Instituto de Astrofísica de Canarias (IAC), has led research which has used data from the KECK telescope in Hawaii to understand the impact that active galactic nuclei have on star formation in their host galaxies. The results are published today in the journal Monthly Notices of the Royal Astronomical Society Letters. One of the key questions that astronomers are trying to answer is ‘Why do galaxies look the way they do?’. Computer simulations of how galaxies formed and evolved suggest that there should be many more very large galaxies than we actually

The international collaboration Whole Earth Blazar Telescope (WEBT), in which researchers from the Instituto de Astrofísica de Canarias (IAC) participate, has discovered rapid and quasi-periodic variations in the observed brightness of the blazar BL Lacertae, located about a billion light-years away. These changes were observed during a strong outburst in 2020 and their origin is associated with a jet of high-energy particles. The study has used data from space satellites combined with observations from ground-based infrastructures, including the Teide Observatory (OT) and the Roque de los