A test of constancy of dark matter halo surface density and radial acceleration relation in relaxed galaxy groups

@inproceedings{Gopika2021ATO,
  title={A test of constancy of dark matter halo surface density and radial acceleration relation in relaxed galaxy groups},
  author={K. Gopika and Shantanu Desai},
  year={2021}
}
that ρc ∝ r −1.35 −0.17 c , with an intrinsic scatter of about 27.3%, which is about 1.5 times larger than that seen for galaxy clusters. Our results therefore indicate that the surface density is discrepant with respect to a constant value by about 2σ. Furthermore, we also implement a test of the radial acceleration relation for this group sample. We find that the residual scatter in the radial acceleration relation is about 0.32 dex and a factor of three larger than that obtained using galaxy… Expand

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