Welcome to my website! I am Diego Calderón, Postdoctoral Researcher at the Time-domain astronomy group led by Prof. Dr. Ondřej Pejcha in the Institute of Theoretical Physics at Charles University in Czech Republic since October 2019.

I obtained my PhD in September 2019 at the
Instituto de Astrofísica at Pontificia Universidad Católica de Chile. My doctoral thesis is entitled “The role of interacting stellar winds feeding Sgr A*”. This work was developed under the supervision of Prof. Jorge Cuadra who leads the Planets, accretion, and Galactic Centre astrophysics (PLAGA) group at IA-PUC. Part of my thesis work was carried out at the Max-Planck-Institute for extraterrestrial physics (MPE) in Garching bei München. In this institution, my co-advisor was Dr. Marc Schartmann who is the Scientific Coordinator of the Excellence Cluster ORIGINS at Ludwig-Maximilians-Universität München, as well as a member of the Physics of galactic nuclei group at MPE, both led by Prof. Dr. Andreas Burkert..

The main goal of my research is to understand the accretion of the cold gas (T~ 10,000K) onto the central super-massive black hole of our Galaxy. This component would be formed through hydrodynamical instabilities in stellar wind collisions. The cold gas might provide the bulk of the accretion, be the responsible of its variability episodes, and/or explain the presence of the enigmatic G2-like objects.


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Bunch of araucarias in a cloudy summer day near Icalma, Chile.