Format results
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Forecasting LSST Cosmology: Building Pipelines in the Era of Systematics
Niko Sarcevic - Newcastle University
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Host Galaxies of Binary Compact Objects Across Cosmic Time
Maria Artale - Universidad Andrés Bello
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Cosmological magnetic fields from electroweak symmetry breaking
Tanmay Vachaspati - University of Arizona
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The Most Distant Quasars and the First Super-massive Black Holes
Daniel Mortlock - Imperial College London
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Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation
Shantanu Basu - Western University
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The Cosmic Neutrino Background
Douglas Scott - University of British Columbia
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Quantum droplets of dark matter
Ian Moss - Newcastle University
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Quasi-Einstein equations and a Myers-Perry rigidity problem
Eric Woolgar - University of Alberta
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OGRePy and Time Travel Paradoxes
Barak Shoshany - Brock University
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Cosmological Foundations revisited with Pantheon+
Antonia Seifert - Perimeter Institute for Theoretical Physics
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Viewing the Cosmos Through the Highly Redshifted 21-cm Line
Robert F. Pascua - University of Toronto
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Forecasting LSST Cosmology: Building Pipelines in the Era of Systematics
Niko Sarcevic - Newcastle University
The Vera C. Rubin Observatory’s LSST promises unprecedented cosmological constraints, but achieving them requires more than just statistical power—it demands forecasting pipelines that can account for complex astrophysical systematics and modeling challenges on small scales. In this talk, I present… -
Host Galaxies of Binary Compact Objects Across Cosmic Time
Maria Artale - Universidad Andrés Bello
The advent of gravitational wave (GW) detections has opened a new window into our understanding of stellar-mass black holes and neutron stars. Ongoing advancements and upcoming third-generation GW detectors are expected to provide increasingly detailed insights into the properties of compact object… -
Cosmological magnetic fields from electroweak symmetry breaking
Tanmay Vachaspati - University of Arizona
The standard models of particle physics and cosmology predict the existence of a cosmological magnetic field. Estimates of the magnetic field strength and coherence scale are derived from MHD simulations and new MHD invariants. Such magnetic fields are consistent with upper and lower bounds obtained… -
The Most Distant Quasars and the First Super-massive Black Holes
Daniel Mortlock - Imperial College London
Quasars - accreting super-massive black holes - are the most luminous non-transient sources known and can be seen at redshifts of z > 7, when the Universe was just ~5% of its current age. This implies that black holes with masses of up to ~10^9 M_Sun formed less than 800 Myr after the Big Bang… -
Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation
Shantanu Basu - Western University
We are now firmly within the ALMA-inspired era of star formation studies. We have abundant high sensitivity and resolution observations of star-disk-outflow systems as well as the ability to perform complex high-resolution plasma astrophysics simulations of their formation. I review recent three… -
Cosmic Recombination with Primordial Magnetic Fields and the Hubble Tension.
Levon Pogosian
Primordial Magnetic Fields (PMFs), long studied as potential relics of the early Universe, can accelerate recombination and have been proposed as a possible solution to the Hubble tension. In this seminar, I will present the latest observational evidence supporting this idea, based on comprehensive… -
The Cosmic Neutrino Background
Douglas Scott - University of British Columbia
The cosmic neutrino background is like the cosmic microwave background, but less photon-y and more neutrino-ey. The CNB is also less talked about than the CMB, mostly because it's nearly impossible to detect directly. But if it could be detected, it would be interesting in several ways that are… -
Quantum droplets of dark matter
Ian Moss - Newcastle University
Vacuum polarisation can destabilise dark matter models made from ultralight, weakly coupled scalar fields. The dark matter condenses into quantum droplets, like those seen in Bose Einstein condensates, and could contribute to explaining some cosmological conundrums. -
Quasi-Einstein equations and a Myers-Perry rigidity problem
Eric Woolgar - University of Alberta
Quasi-Einstein equations are generalizations of the Einstein equation. They arise from warped product Einstein metrics (Kaluza-Klein reductions), Ricci solitons, cosmology, near-horizon geometries, and smooth measured Lorentzian length spaces. Despite their apparent generality, they often have a… -
OGRePy and Time Travel Paradoxes
Barak Shoshany - Brock University
Part I: OGRePy: Object-Oriented General Relativity in Python I will present a detailed introduction to my new Python package, OGRePy: (O)bject-Oriented (G)eneral (Re)lativity for (Py)thon, a port of my popular Mathematica package OGRe, which is used by many researchers in general relativity and… -
Cosmological Foundations revisited with Pantheon+
Antonia Seifert - Perimeter Institute for Theoretical Physics
The standard model of cosmology is built upon the assumptions of homogeneity and isotropy. Invoking backreaction of inhomogeneities leads to an alternative model, the timescape cosmology. It is homogeneous and isotropic on a statistical level but departs from average Friedmann-Lemaître-Robertson… -
Viewing the Cosmos Through the Highly Redshifted 21-cm Line
Robert F. Pascua - University of Toronto
The 21-cm line from neutral hydrogen holds immense potential as a probe of early astrophysics and cosmic evolution. Realizing the potential of this observational probe, however, is limited by our ability to control systematic effects in the data and model the cosmological 21-cm signal. In this talk…