Welcome!

Dear Visitor,

Welcome to my homepage dedicated to my professional life as an observing astrophysicist. I work on the centers of nearby galaxies, trying to observe and understand the immediate surroundings of the supermassive black holes (SMBH) that lurk there. Many of these SMBH actively accrete material from their surroundings creating "bright fireworks" that can be observed all throughout the electromagnetic spectrum.

Here you will not only find all relevant information about me and my research but I will also post once in a while interesting information I encounter during my work.

Please feel free to contact me in case of questions or comments!

Friday, November 30, 2018

Invited talk about VISIR at Lorentz Workshop he next Generation of Thermal-IR Astronomy, Leiden, 2018

Slides of short presentation about the VISIR instrument at the VLT, Lorentz-Center workshop: The next Generation of Thermal-IR Astronomy, Leiden, Netherlands, Nov 2018


Coils of Apep -- Probably the most beautiful image VISIR ever took

During my time as ESO fellow, working at the Paranal Observatory, I was lucky enough to record this mid-infrared image with VISIR during one of those winter nights in 2016 as part of my service to the community:


This cosmic serpent-like swirl is actually a multiple system of Wolf-Rayet stars whereas the swirls are formed by colliding winds.

The full story can be read here: Callingham et al. (2018)