I am a PhD student at DAWN, supervised by Gabriel Brammer and Darach Watson. My research interest lies in studying the early Universe, how it differs from the present Universe, and how one evolved into the other. I am especially fascinated by unusual or puzzling observations that require new ideas and physics to explain.
I currently work on Lyman alpha emitters (LAEs) at high redshift. For my Master's thesis (2021), I studied compact LAEs observed with the Hubble Space Telescope (ACS G800L grism). The aim was to understand why they are compact. I am now expanding upon this work.
During my Bachelor's in Astronomy (2016-2018) at the University of Texas at Austin, I worked with Caitlin Casey on multiplicity observed in ALMA galaxies.
Daniele Bjørn Malesani
I am a postdoc working at the astronomy department of the Radboud University in Nijmegen (the Netherlands). At the same time, the Cosmic Dawn Center is graciously hosting me for 50% of my time.
I am an observational astronomer, interested in the field of transients. These are objects that vary catastrophically in the sky. Many are related to the deaths of stars, such as supernovae and gamma-ray bursts. Kilonovae are a newly discovered type of transients, connected to gravitational wave sources, originated when orbiting pairs of compact stars (black holes and neutron stars) smash against each other and merge, usually forming a (bigger) black hole.
Transients can be very bright, and while they're active we can see them further away in the universe. As such, they are important probes of their environments. For example, gamma-ray bursts allow to test the composition of the medium of high-redshift galaxies. Kilonovae are an important site where elements heavier than iron are produced: everybody's jewelry may come from a pair of colliding neutron stars.
I am involved in international programs, such as the Stargate and ENGRAVE consortia, aimed at exploiting every aspect of these transient sources.
Ass. Prof. Emerita
Nucleosynthesis in the early Galaxy
- First stars and the first supernovae
Formation and evolution of the Milky Way Galaxy
- Star formation and nucleosynthesis in the galactic disk
- Chemical and dynamical evolution in the galactic disk
Clara Giménez Arteaga
Joonas Kari Markku Viuho
Kasper Elm Heintz
I am a PhD student working at the Cosmic Dawn Center advised by Gabriel Brammer. I currently study the formation and evolution of the most massive galaxies in the universe, using a combination of data from ground and space based telescopes across the entire electromagnetic spectrum. I received my Master’s in Astrophysics in 2020 from the University of St Andrews in Scotland, where I worked with Vivienne Wild, measuring the morphologies of low z post-starburst galaxies.
Before deciding to study galaxies, I was interested in particle and astroparticle physics, and had fantastic opportunities to work on experimental projects relating to both cosmic rays and neutrinos at Jodrell Bank Center for Astrophysics and later CERN. I’ve also been lucky enough to do both cosmology and galaxy summer research projects at the Institute of Cosmology and Gravitation and the University of Oxford.
When I’m not doing research I enjoy powerlifting, growing plants, drawing, making music, exploring Copenhagen and playing video games (but not all at the same time!). My pronouns are she/hers.
Astrophysicist and science communicator
I am an astrophysicist and science communicator.
At DAWN, my tasks include communicating our science to the public, arranging workshops, coordinating other scientific activities, maintaining our website, as well as conducting my own research.
My research focuses on galaxies, in particular the light coming from processes that have to do with galaxy formation. I use computer simulations to predict and interpret "real" observations. More specifically, I use hydrodynamical simulations with (Monte Carlo) Lyman α radiative transfer.
You can find out more about me, my research, and my outreach activities on my personal website.
Associate Professor at U. Geneva
John R. Weaver
I am a professor of Cosmology and Extragalactic Astrophysics at the Niels Bohr Institute. I received my BSc (1998), MSc (2000) and PhD (2003) degrees from the Niels Bohr Institute, under supervision of Jens Hjorth.
I spent 5 years abroad as a postdoctoral research associate at Yale University (with Pieter van Dokkum) and an independent ESO fellow at the European Southern Observatory headquarters in Germany. Since 2009 I have led a research group at the Niels Bohr Institute, funded by a Lundbeck Junior Group Leader fellowship (2009-2014) an ERC consolidator grant (2015-2020), and a DNRF center of excellence grant (2018-2024).
My research focuses on the understanding the cosmic origin and evolution of galaxies, primarily through observations with the largest ground and space-based observatories. I am part of several major international research teams, including COSMOS (member of the Scientific Steering Committee), Euclid (Co-lead of the Primeval Universe Working Group), Ultravista (core-member), Hawaii-Two-0 (CoI), Euclid/WFIRST Spitzer Legacy Survey (CoI), BUFFALO (CoI), RELICS (CoI), ALPINE (CoI).
Since 2009 I have taught the undergraduate course “Cosmology”, and supervised postdoc and student research projects on all levels (BSc, MSc, PhD).
David Blánquez Sesé