Stellar streams in the Gaia era


Belokurov, V. (2021). Stellar streams in the Gaia era. Perimeter Institute. https://pirsa.org/21020021


Belokurov, Vasily. Stellar streams in the Gaia era. Perimeter Institute, Feb. 09, 2021, https://pirsa.org/21020021


          @misc{ pirsa_21020021,
            doi = {10.48660/21020021},
            url = {https://pirsa.org/21020021},
            author = {Belokurov, Vasily},
            keywords = {Cosmology},
            language = {en},
            title = {Stellar streams in the Gaia era},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {feb},
            note = {PIRSA:21020021 see, \url{https://pirsa.org}}

Vasily Belokurov University of Cambridge


Stellar streams are a powerful tool for mapping of the Galactic matter distribution. Thanks to Gaia we now have full 6D (complete phase-space) view of a quickly growing subset of the Milky Way streams. These stars are precious as they can shed light not only on the broad-brush structure of the Galaxy, but also reveal small time-evolving perturbations of the Galactic potential. I will use the Sagittarius and the Orphan streams to present the most recent measurements of the dark matter halo of the Milky Way and one of its sub-halos.