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Watch an astrophysics colloquium presentation exploring the complex interactions between dark matter haloes in our galaxy through the lens of stellar streams. Learn how over 100 stellar streams, formed by tidally disrupted dwarf galaxies and globular clusters, provide crucial data about the Milky Way's gravitational potential. Delve into detailed analysis of two significant streams - the Sagittarius and Orphan-Chenab - and discover how they reveal consistent mass profiles but conflicting orientations of dark matter haloes. Explore the substantial influence of the Large Magellanic Cloud (LMC) on these stellar streams, including insights into dynamical friction and potential implications for understanding dark matter's fundamental nature. Gain comprehensive understanding of stream formation processes and their role as tools for mapping our galaxy's gravitational landscape.
