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Carlos Frenk (Durham ICC)10/09/2025, 09:10
The LCDM model has the virtue of having strong predictive power in so
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far as the properties of the dark matter are concerned. For example,
the mass function of dark matter halos is known to high precision,
from the mass scale of the Earth to that of rich clusters. The
predictive power is weakened when baryons are considered because of
the complex astrophysical processes to which they can... -
Dr Sten Delos (Carnegie Observatories)10/09/2025, 09:50The Evolving Universe (Reionization, first galaxies and their SMBH, Quasars and AGN, the assembly of cosmological structures)Talk
Every dark matter halo forms with a ρ ∝ r−1.5 density cusp at its center. This prompt cusp has a mass comparable to the cutoff scale in the spectrum of initial density perturbations. For warm and interacting dark matter models, prompt cusps significantly influence the structures of low-mass halos, so they are an important consideration for efforts to use satellite galaxies, strong...
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Rahul Kannan10/09/2025, 11:00Talk
The study of primitive stars and galaxies is an exciting new frontier in astrophysics and cosmology. They form within the first gigayear after the Big Bang and significantly impact their surroundings by emitting a lot of high-energy radiation that transforms the surrounding cold neutral gas into a hot and ionized medium. They also form an important evolutionary link between the smooth matter...
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Hai-Bo Yu (University of California Riverside)10/09/2025, 11:40
I will present recent high-resolution N-body simulations of self-interacting dark matter (SIDM) and discuss their implications across a broad range of astrophysical observations. In particular, I will highlight novel signatures arising from gravothermal collapse in dark matter halos. I will then explore the prospects for detecting these signatures in strong gravitational lensing systems,...
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Maryna Ishchenko (Main Astronomical Observatory of National Academy of Sciences of Ukraine)10/09/2025, 12:20The Evolving Universe (Reionization, first galaxies and their SMBH, Quasars and AGN, the assembly of cosmological structures)Talk
The Nuclear Star Cluster (NSC) is at the centre of the Galaxy, an extremely dense star system. Several mechanisms are exists to explain how NSCs form, including gas migrating or GCs merging to the NSC.
Based on the second idea, we will present the processes involved in the complete decay of GCs during their interaction with the NSC of our Galaxy.
We have generated 'theoretical' GCs in a...
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Andrea Valerio Maccio (New York University Abu Dhabi)The current Cosmological Model and its Tensions (Theory and observations)Talk
The LCDM model has ben challenged many times in the past decade,
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mainly by galaxy observations on small scales: from the abundance of
satellites, to the distribution of dark matter within galaxies. In my talk
I will first revise all these claims with the help of cosmological
numerical simulations of galaxy formation from the NIHAO project. I will
then discuss whether there is indeed an...
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