Oriented Stacking
In Lokken et al (2022, ApJ) we present a new technique which uses oriented stacking and combines multi-wavelength datasets to tease out the average signals from superclusters.
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I am a PhD Candidate in the Department of Astronomy & Astrophysics at the University of Toronto in Canada. I'm interested in the major questions in cosmology: what are dark energy and dark matter? How can the large-scale structure we observe today tell us about the past and future of the universe?
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My Research at a Glance
I focus on studying the large-scale network of matter in the universe called the Cosmic Web. I'm interested in the information that the complex extended structures within this "web," such as filaments and superclusters, hold about the history of our universe. Ultimately, I want to use filamentary structure to search for signs of beyond-the-standard-model physics and cosmology. By working at the intersection of simulations and observations, I am optimizing the information we can glean from existing data and preparing for future sky surveys.
Below are the four main projects I am currently working on in my thesis.
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Simulating Transients And Their Host Galaxies
In Lokken, Gagliano et al. (2022, submitted to MNRAS) we present the Simulated Catalog of Optical Transients and Correlated Hosts (SCOTCH), in which we associate 13 classes of transients with synthetic host galaxies from the CosmoDC2 simulation out to z=3.
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Superclustering in alternative cosmologies
I am using the Peak Patch simulation to generate large-scale structure for universes with different cosmologies, and test how the characteristics of filamentary structure differ between the various cosmologies.
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Astrophysical Feedback and the SZ Effect
I am using hydrodynamic simulations to explore how feedback mechanisms, like AGN jets, affect the state of gas in the warm-hot intergalactic medium in filaments. Image from the Illustris Simulation.
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