Quasi-periodic oscillations appear to be a common characteristic of accreting systems and have been observed in black hole and neutron star X-ray binaries, alongside active galactic nuclei and even ultraluminous X-ray sources. The focus of this blog post is quasi-periodic oscillations in black hole X-ray binaries. Black hole X-ray binaries are comprised of a stellar […]
Black hole accretion and quasi-periodic oscillations Read More »
Radio galaxies are a class of active galactic nuclei that shine very brightly at radio frequencies but also radiate across the entire electromagnetic spectrum too. Powered by accretion of matter onto a central fast-spinning supermassive black hole, radio galaxies can display extended radio structures- jets. Jets emit radiation strongly at radio frequencies and can propagate
The curious case of FR0s: The relatively new class of radio galaxy Read More »
The powerful jets launched by a supermassive black hole feeding on material at the centre of a galaxy, comprise some of the most powerful and highly energetic sources of sustained energy in the known Universe. Launched with velocities close to the speed of light, jets transport large amounts of energy from the central regions of
War of the Clouds: Relativistic jet-cloud interactions Read More »
Radio galaxies are powered by a central supermassive black hole feeding on surrounding matter. Some of this matter is ejected in opposing directions along the axis of rotation of the black hole in the form of powerful relativistic jets. These jets are launched with velocities close to the speed of light and travel vast distances
The Lord of the Wings: Winged and X-shaped radio galaxies Read More »
Black hole X-ray binaries are systems in which a stellar-mass black hole ‘feeds’ on (accretes) gas from a companion star. Gas from the star swirls around the black hole, forming an accretion disk. The accretion disk shines brightly at X-ray frequencies and black hole X-ray binaries are some of the brightest X-ray emitting sources observed
When A Black Hole Devours A Star Read More »
Hi, my name is Gibwa Musoke. I recently joined Sera’s group as a postdoc. I conduct supercomputer simulations of the powerful fast-moving outflows, called jets, associated with active galactic nuclei (AGN). AGN are highly energetic and very bright compact regions at the centres of some galaxies, and are powered by black holes `feeding’ at the
Simulating jets blasting from galaxies Read More »
