Extremes of Black Hole Genesis

Extremes of Black Hole Genesis

PhD defence by Albert Bjerregård Sneppen

Assessment Committee

Professor Johan Fynbo, Neils Bohr Institute, University of Copenhagen (Chairperson)
Professor Jenny E. Greene, Princeton University
Professor Masaomi Tanaka, Tohoku University

Supervisor

Associate Professor Darach Jafar Watson

Department

Niels Bohr Institute

Place

Building: The Niels Bohr Building, Room: Margrethe Bohr Auditorium, Jagtvej 155, 2200 København

Email address to gain access to the thesis: a.sneppen@gmail.com.
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Short description of the thesis

The extreme natural laboratories associated with the formation-sites of black holes are increasingly coming into view. These include the heavy-element debris from neutron-star mergers and the dense gas enshrouding early supermassive black holes, the so-called ‘Little Red Dots’ discovered with the James Webb Space Telescope. This thesis develops and applies physical frameworks to combined these new observations with radiative transfer modelling. In doing so, it shows how new observations can illuminate the physics near the genesis of black holes, from stellar-mass remnants formed in cosmic collisions to supermassive black holes emerging in the early Universe.