Bringing people and ideas together to fund, conduct, and share transformative science.
Our grants advance knowledge and strengthen connections between science and society.
Discover the latest news, research, and updates.
We convene scientists, mathematicians, and thinkers to share ideas and explore new questions.
Founded by Jim and Marilyn Simons, we’re a private philanthropy advancing mathematics and basic science.
Work with us on the frontier of basic science research.
The Flatiron Institute is a research center that uses computational science to advance fields like physics, biology, and astronomy.
Search
Colloquium
– ET
Title: Baryonic solutions and challenges for cosmological models of dwarf galaxies.
Abstract: Dwarf galaxies pose strong constraints to the Lambda Cold Dark Matter (LCDM) model, with several outstanding challenges still to be reconciled between theoretical models and observations. I will discuss some of these tensions, including the mapping between stellar mass and halo mass, dark matter cores, morphology of dwarfs and diversity of rotation curves. I will highlight the important role of modeling the physics of baryons in galaxy formation simulations to compare observations to cosmological predictions. From such comparison, a few observational milestones arise as promising probes of the LCDM model: the census of ultrafaint galaxies beyond the Milky Way, phase-space studies of stars in nearby cored dwarfs, and measurements of the degree of burstiness in the star formation of low mass galaxies.
October 23, 2026
3–4 p.m. ET
Speaker
Alex Szalay
October 30, 2026
3–4 p.m. ET
Speaker
Jim Fuller
November 6, 2026
3–4 p.m. ET
Speaker
Stephen Green