What Can Stellar Kinematics Tell Us About Dark Matter in Dwarf Galaxies?

          @misc{ pirsa_PIRSA:12040110,
            doi = {10.48660/12040110},
            url = {https://pirsa.org/12040110},
            author = {Baghramian, Shant},
            keywords = {Cosmology},
            language = {en},
            title = {What Can Stellar Kinematics Tell Us About Dark Matter in Dwarf Galaxies?},
            publisher = {Perimeter Institute},
            year = {2012},
            month = {apr},
            note = {PIRSA:12040110 see, \url{https://pirsa.org}}
          }
          

Abstract

Dwarf galaxies are the most know dark matter dominated luminous objects in Universe. Observing the line of sight velocity and position of stars in Milky way satellites, and assuming the dark matter potential and a specific configuration of stellar orbits, one can obtain the mass profile of dark matter in galaxies. In this talk I will show that by considering a generic case of  phase-space density as a function of energy and angular momentum and by relaxing the specific choice of orbital configuration (which is assumed in literature), we can find  the dark matter potential and mass profile in this general case and restudy the challenges of Cold Dark Matter(CDM) paradigm like core-cusp or missing satellite problem.