Search Publications

A direct localization of a fast radio burst and its host

Lazio, T. J. W.; Ransom, S. M.; Chatterjee, S. +22 more

Fast radio bursts are astronomical radio flashes of unknown physical nature with durations of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio luminosities that are orders of magnitude larger than those of all known short-duration radio transients. So far all fast radio bursts have been detected with lar…

The close environments of accreting massive black holes are shaped by radiative feedback

Lamperti, Isabella; Ho, Luis C.; Fabian, Andrew C. +13 more

The majority of the accreting supermassive black holes in the Universe are obscured by large columns of gas and dust. The location and evolution of this obscuring material have been the subject of intense research in the past decades, and are still debated. A decrease in the covering factor of the circumnuclear material with increasing accretion r…

The response of relativistic outflowing gas to the inner accretion disk of a black hole

Fabian, Andrew C.; Reynolds, Christopher S.; Middleton, Matthew J. +21 more

The brightness of an active galactic nucleus is set by the gas falling onto it from the galaxy, and the gas infall rate is regulated by the brightness of the active galactic nucleus; this feedback loop is the process by which supermassive black holes in the centres of galaxies may moderate the growth of their hosts. Gas outflows (in the form of di…

Solar abundance ratios of the iron-peak elements in the Perseus cluster

Done, Chris; Safi-Harb, Samar; Hamaguchi, Kenji +191 more

The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae. Therefore, X-ray spectroscopy of the intracluster medium provides an opportunity to investigate the nature of supernova explosions integrated over cosmic time. In particular, the abundance of the ir…