-
Odelia Hartl (Texas A&M University)11/08/2025, 14:00
We use new proper motion measurements of M31 to examine the orbit and angular momentum between the Milky Way (MW) and M31. Assuming a Local Group (LG) mass consistent with measured values and that the system evolves in isolation, we show that a variety of orbits is possible. We compare to a sample of LG-like systems in the Illustris-TNG simulation and find that $\sim 13\%$ of these pairs have...
Go to contribution page -
Lukas Lehmann (Goethe-Universität Frankfurt am Main), Maximilian Heyne (Goethe-Universität Frankfurt am Main)11/08/2025, 14:20
The Lambda CDM model has varies shortcomings when looking at the small scale structures of the universe, like the missing satellite problem or the core cusp problem. We are part of an international research collaboration where our sub-team aims for deriving an effective one- and two-fluid descriptions of dissipative, self-interacting dark matter (DSIDM). The main goal is to obtain a better...
Go to contribution page -
Alyssa Lazzer (York University), Ms Maheen Hemani (York University)11/08/2025, 14:45
Dark matter (DM) is an invisible form of matter, accounting for most of the Universe’s mass, and has a critical role in cosmic structure formation. Despite its abundance, dark matter remains poorly understood within current fundamental physics. Its specific particle nature and interaction mechanisms remain unknown. We are researching a promising theory, dissipative dark matter (DDM), where...
Go to contribution page -
Ben Mendez (York University)11/08/2025, 15:10
The nature of dark matter (DM) has been a primary interest in cosmology and beyond Standard Model physics. Leading models, such as WIMPs, theorize a coupling with the Standard Model (SM) that allow for scattering off SM particles. Direct detection experiments, such as XENON1T and LUX, search for these DM scattering events and have determined constraints on DM models, but have not yet detected...
Go to contribution page -
Ting Li (University of Toronto)12/08/2025, 09:00
-
12/08/2025, 10:00
-
Mingzhi Jiang12/08/2025, 14:00
Stellar streams are trails of stars stripped during the orbit of their progenitor around a host galaxy. They can unveil valuable information about dark matter subhalos, galactic potential, and galactic evolution. In particular, the kink region in the Orphan Chenab (OC) stellar stream is a mark left by a perturbation by the Large Magellanic Cloud (LMC) and offers constraints to the LMC mass...
Go to contribution page -
Alexandros Pratsos (University of Toronto)12/08/2025, 14:20
Stellar streams are thin, elongated structures in the Galactic halo, formed by the tidal disruption of bound groups of stars. They provide valuable insight into the Milky Way’s gravitational potential and dark matter substructure, as breaks in their structure can reveal past interactions with dark matter clumps.
Go to contribution page
Previous stream searches often prioritized either astrometric or photometric... -
Mr Juan Carlos Aranda Muñoz (University of Toronto)12/08/2025, 14:40
Dwarf spheroidal galaxies (dSphs) offer a unique opportunity to probe the nature of dark matter (DM) due to their proximity and high dark matter content. In this project, we investigate whether future spectroscopic data, such as that from the Dark Energy Spectroscopic Instrument (DESI), could enable us to distinguish between cusped and cored dark matter profiles in these systems. To test this,...
Go to contribution page -
ALEJANDRA CALDERON LINARES (University of Toronto)12/08/2025, 15:00
Stellar streams are elongated trails of stars stripped by tidal forces from globular clusters and dwarf galaxies. These tidal features offer a powerful way to probe the formation history of the Milky Way and its dark matter substructure. This work aimed to develop a pipeline to characterize the kinematic and chemical properties of stellar streams associated with globular clusters, using...
Go to contribution page -
Felix Alexander Quintus Groh (Goethe University Frankfurt), Maximilian Arthur Klotzbach (Goethe University Frankfurt)12/08/2025, 15:20
One of the first models for Dark Matter (DM) has historically been the Cold Dark Matter (CDM) Model. This model works well on large scales, however, it breaks on smaller scales. To remedy this, a fix has been proposed in the form of Self-Interacting Dark Matter (SIDM), which can accurately reproduce some of the structure of galaxies. This approach does not fulfil every possible criterion for a...
Go to contribution page -
Dominik Plonka (Goethe University Frankfurt)13/08/2025, 09:30
The Milky Way is a living mosaic of stars of different origins: some were formed in-situ, while others were accreted from dwarf galaxies that have since been disrupted. To reconstruct the galaxy’s formation history, these accreted populations must therefore be identified and characterized. These ancient relics are mainly located in the stellar halo, but the debris from different progenitors...
Go to contribution page -
Zayna Khadour (McMaster University)13/08/2025, 09:50
Globular clusters (GCs) are often regarded as simple stellar populations with
Go to contribution page
uniform ages and chemical compositions. However, observations, particularly from the Hubble Space Telescope (HST), reveal peculiar abundance patterns, known as multiple populations (MPs). MPs are characterized by enhancements in He, N, and Na, alongside depletions in O and C. The origin of these abundance variations... -
Zachary Doucet (University of Alberta)14/08/2025, 14:00
Dark matter is hypothesized to make up 85\% of the matter of the Universe, yet, despite much cosmological evidence for its existence, its fundamental nature remains unknown, making it one of the most pressing open questions in modern physics. SNOLAB, 2000 metres underground in a nickel mine near Sudbury, Ontario, hosts the PICO-40L detector, which uses bubble chamber technology for...
Go to contribution page -
Isaac Rosenberg (University of Toronto)14/08/2025, 14:20
Next-generation gravitational wave (GW) detectors are expected to detect hundreds of thousands of events per year. This will provide a rich dataset to not only study the binary black hole (BBH) source population but also test cosmological models. Each GW event offers a direct estimate of the luminosity distance to the source. When coupled with the redshift, this enables the construction of a...
Go to contribution page -
Aylar Sedaei (York University)14/08/2025, 14:40
Fast Radio Bursts (FRBs) are millisecond-duration flashes of radio waves originating from extragalactic — and possibly cosmological — distances. While their progenitors remain a subject of active investigation, the propagation of FRBs through cosmic media renders them powerful tools for astrophysical and cosmological inquiry. In this talk, I will introduce the key observational properties of...
Go to contribution page -
Aster Schnell (York University), Finn Karstens (Goethe Universität)14/08/2025, 15:00
The formation and evolution of the early Universe is the subject of ongoing research, with many open questions such as the formation of supermassive black holes. It is thought that dark matter minihalos provided the necessary conditions for the primordial gas to collapse. While the simplest dark matter model, cold dark matter, can explain the structure of the Universe on a large scale, an...
Go to contribution page -
Dr Matthew Johnson (York University & Perimeter Institute)
See lecture for details.
Go to contribution page -
Dr James Taylor (University of Waterloo)
See lecture for details.
Go to contribution page -
Dr Katie Mack (Perimeter Institute)
Dark matter forms the foundation for all cosmic structure, and its fundamental nature is one of science's most pressing enigmas. As we search for the most distant galaxies in the universe with radio and infrared observations, we are in a position to explore the particle physics of dark matter — the possibility of annihilation, decay, or other particle interactions — through its effects on...
Go to contribution page -
Dr Adam Muzzin (York University)
See lecture for details.
Go to contribution page -
Dr Maya Fishbach (University of Toronto)
See lecture for details.
Go to contribution page -
Dr Cliff Burgess (McMaster University & Perimeter Institute)
See lecture for details.
Go to contribution page -
Dr Cliff Burgess (McMaster University & Perimeter Institute)
See lecture for details.
Go to contribution page -
Dr Ting Li (University of Toronto)
See lecture for details.
Go to contribution page -
Dr Miriam Diamond (University of Toronto)
See lecture for details.
Go to contribution page -
Dr Asimina Arvanitaki (Perimeter Institute)
In this talk, I will describe three things. First, I will outline the conditions under which the interaction rate of inelastic processes that change the internal state of a system of N targets scales N^2. This is an effect distinct from coherent elastic scattering, but with the same scaling. These inelastic processes are a generalization of Dicke superradiance for light, and we thus refer to...
Go to contribution page -
Dr Camilla Juul Hansen (Goethe University Frankfurt)
See lecture for details.
Go to contribution page
Choose timezone
Your profile timezone: