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Blog posts by Sera’s group.

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Gamma-ray bursts: Most energetic explosions in the universe

Gamma-ray bursts (GRBs) have an interesting and colourful history. These extreme events were first discovered, serendipitously, in the 1960s by the U.S. Vela satellites. These satellites were originally designed to make sure that the Soviet Union does not perform any nuclear tests in space, which would be a violation of the 1963 Nuclear Test Ban […]

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Predicting what black holes look like

The Event Horizon Telescope (EHT), a ‘virtual’ Earth-sized telescope made by linking facilities across the globe, is on the cusp of announcing its first ever results to “photograph” a black hole! Why does this relate to our research group? Well, we develop theoretical models for the physics of what happens to stuff as it falls

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Unleashing Jets from Black Holes

Hello readers! I am Atul Chhotray, a post-doctoral researcher in Sera’s group. I am a theoretical / numerical astrophysicist, which means I employ the laws of physics / computers to understand and explain the workings of the universe. I have been fascinated by black holes since time immemorial – and in this post I will

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Simulating jets blasting from galaxies

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

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The microphysics of astrophysics: protons and electrons reveal the existence of black holes

My name is Dimitris Kantzas and I am a PhD student in Sera’s group. My research is focused on studying the multiwavelength radiation emitted in the vicinity of accreting black holes in order to better understand how these sources radiate, where exactly this radiation originates and if this radiation affects the physics and the morphology

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Observing jets from black holes (and other compact objects) to understand how they are launched

Hi, I am Tom Russell, a Veni Research Fellow working with Sera’s group. My work mainly focuses on radio observations of accreting compact objects (mostly black hole and neutron star X-ray binaries, but even the occasional white dwarf) to see how the outflowing jet evolves over time. I then link the jet evolution to other

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What is research for?

I’m Matteo Lucchini and have been working as a PhD student in Sera’s group for almost two years now. Like everyone else in the group I focus on figuring out what black holes do, but for this blog post I thought I would write something a little different (and ever so slightly romanticized). Very often,

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Black Hole Basics: Relativistic jets as the most powerful fountains in the Universe

You must have noticed the spectacular image shown above. The purple haze shows the radio emission of relativistic jets belonging to the nearby galaxy Centaurus A. Here the object is projected in its actual size as it would be seen on the sky if its light were visible to the human eye. This stunning example

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