Search Publications

A periodicity of ~1hour in X-ray emission from the active galaxy RE J1034+396

Done, Chris; Ward, Martin; Gierliński, Marek +1 more

Active galactic nuclei and quasars are thought to be scaled-up versions of Galactic black hole binaries, powered by accretion onto supermassive black holes with masses of 10⁶-10⁹, as opposed to the ~10 in binaries (here is the solar mass). One example of the similarities between these two types of systems is the characteristi…

Flares from a candidate Galactic magnetar suggest a missing link to dim isolated neutron stars

Hanlon, L.; McBreen, B.; Bremer, M. +39 more

Magnetars are young neutron stars with very strong magnetic fields of the order of 10¹⁴-10¹⁵G. They are detected in our Galaxy either as soft γ-ray repeaters or anomalous X-ray pulsars. Soft γ-ray repeaters are a rare type of γ-ray transient sources that are occasionally detected as bursters in the high-energy sky. No optical…