Mass discrepancy–acceleration relation in Einstein rings

  title={Mass discrepancy–acceleration relation in Einstein rings},
  author={Yong Tian and Chung-Ming Ko},
  journal={Monthly Notices of the Royal Astronomical Society},
  • Yong Tian, C. Ko
  • Published 1 February 2017
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We study the Mass Discrepancy-Acceleration Relation (MDAR) of 57 elliptical galaxies by their Einstein rings from the Sloan Lens ACS Survey (SLACS). The mass discrepancy between the lensing mass and the baryonic mass derived from population synthesis is larger when the acceleration of the elliptical galaxy lenses is smaller. The MDAR is also related to surface mass density discrepancy. At the Einstein ring, these lenses belong to high-surface-mass density galaxies. Similarly, we find that the… 

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