Format results
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Neutrino and Dark Radiation Properties from Cosmic Datasets
Marilena LoVerde - University of Washington
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Bringing causality to astronomy
Mario Pasquato - Mila - Quebec Artificial Intelligence Institute
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Axionic Blue Isocurvature Perturbations: Generation and Astrophysical Detection Forecasts
Sai Chaitanya - University of Wisconsin–Madison
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Galaxy Evolution: Gas phases and Feedback
James Wadsley - McMaster University
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Hearts of Darkness: probing the regularization of space-time singularities
Vania Vellucci - SISSA International School for Advanced Studies
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Data-driven solutions to the Hubble tension - VIRTUAL
Nanoom Lee - New York University (NYU)
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Gravitational wave resonance in ultralight dark matter halos
Paola Moreira Delgado - Jagiellonian University
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Probing the Invisible Cosmos: from the Early Universe to the Near Field - VIRTUAL
Rui An - University of Southern California
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What can we learn from elastic scattering of Cosmological Gravitational Wave Background? - VIRTUAL
Morgane König - Massachusetts Institute of Technology (MIT)
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Weak gravitational lensing: from galaxy surveys to gravitational waves - VIRTUAL
Guilherme Brando - Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
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Neutrino and Dark Radiation Properties from Cosmic Datasets
Marilena LoVerde - University of Washington
Neutrinos and other light relic particles leave a number of imprints in the cosmic microwave background anisotropies and on maps of the large-scale structure of our Universe. These imprints can not only demonstrate the presence of these particles and constrain their masses, but can provide insight… -
Bringing causality to astronomy
Mario Pasquato - Mila - Quebec Artificial Intelligence Institute
Causal discovery aims at learning causal relations among variables from data. It is an emerging field at the interface of machine learning and statistics that found ample application in several disciplines. From a physicist's point of view it can be seen as an operational definition of the concept… -
Gravothermal Evolution of Self-Interacting Dark Matter Halos in the Short Mean Free Path Regime - VIRTUAL
Sophia Nasr - York University
In this talk, I will discuss my exploration of the gravothermal collapse of isolated self-interacting dark matter (SIDM) halos, driven deep into the core-collapsed regime where interactions are frequent. We investigate how elastic collisions influence the central region of SIDM halos as they undergo… -
Axionic Blue Isocurvature Perturbations: Generation and Astrophysical Detection Forecasts
Sai Chaitanya - University of Wisconsin–Madison
When additional degrees of freedom are considered during inflation, a crucial aspect of early universe physics emerges: the generation of isocurvature quantum fluctuations. In this talk, we will present generation and detection forecast for axionic blue-tilted isocurvature power spectra. The large… -
Galaxy Evolution: Gas phases and Feedback
James Wadsley - McMaster University
Studying galaxy evolution is a human endeavour. Simulations would ideally include physical models based on relevance, but we are often limited by practical considerations like CPU time and code complexity. I will examine energy inputs to galaxies from radiation and stellar feedback, how they are… -
Hearts of Darkness: probing the regularization of space-time singularities
Vania Vellucci - SISSA International School for Advanced Studies
In a complete theory of gravity we expect space-time singularities to be regularized by quantum effects. From this point of view, we have two possible regular alternatives to singular black holes (BHs) to describe the ultracompact objects that we saw in our universe: regular black holes and… -
Data-driven solutions to the Hubble tension - VIRTUAL
Nanoom Lee - New York University (NYU)
While the standard $\Lambda$CDM model provides an astonishing fit to cosmological data, there is a 4-6 $\sigma$ tension in the Hubble constant, $H_0$, between the value inferred from early-Universe observables, Planck CMB anisotropy spectra, and the value determined by local measurements from SH0ES… -
Gravitational wave resonance in ultralight dark matter halos
Paola Moreira Delgado - Jagiellonian University
In this talk I will show how the gravitational potentials generated by ultralight dark matter halos interact with gravitational waves, resonantly amplifying them. Significant amplifications can be achieved in dense dark matter environments, where the Floquet exponent is increased. The frequency of… -
Probing the Invisible Cosmos: from the Early Universe to the Near Field - VIRTUAL
Rui An - University of Southern California
The fundamental nature of dark matter and dark energy remains unknown and requires new physics to explain. This talk will present a cosmological quest to understand the properties of these two dominant but invisible components of our universe. I will present my work on early and late-universe… -
Probing the Ionized Gas Thermodynamics in Distant Galaxies with the Sunyaev-Zel’dovich Effect
Aleksandra Kusiak - Columbia University
The Sunyaev-Zel’dovich Effect—the Doppler boost of low-energy Cosmic Microwave Background photons scattering off free electrons—is an excellent probe of ionized gas residing in distant galaxies. Its two main constituents are the kinematic SZ effect (kSZ), where electrons have a non-zero line-of… -
What can we learn from elastic scattering of Cosmological Gravitational Wave Background? - VIRTUAL
Morgane König - Massachusetts Institute of Technology (MIT)
The current progress in gravitational wave detection opened a new exciting window in cosmology. It is natural to ask ourselves how we can best use this new tool to explore physics beyond the standard model. With this idea in mind, my collaborators and I asked what we could learn from Cosmological… -
Weak gravitational lensing: from galaxy surveys to gravitational waves - VIRTUAL
Guilherme Brando - Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
In this talk, I will discuss two lines of research revolving around the study of weak gravitational lensing in our Universe. First, I will present a pipeline that has been in development to model the matter power spectrum from large to small scales, focusing on stage-IV photometric galaxy surveys. I…