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arXiv · 1210.2480

Constraining the substructure of dark matter haloes with galaxy-galaxy lensing

Ran Li·Houjun Mo·Zuhui Fan·Xiaohu Yang·Frank C. van den Bosch
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Abstract

With galaxy groups constructed from the Sloan Digital Sky Survey (SDSS), we analyze the expected galaxy-galaxy lensing signals around satellite galaxies residing in different host haloes and located at different halo-centric distances. We use Markov Chain Monte Carlo (MCMC) method to explore the potential constraints on the mass and density profile of subhaloes associated with satellite galaxies from SDSS-like surveys and surveys similar to the Large Synoptic Survey Telescope (LSST). Our results show that for SDSS-like surveys, we can only set a loose constraint on the mean mass of subhaloes. With LSST-like surveys, however, both the mean mass and the density profile of subhaloes can be well constrained.

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Ran Li, Houjun Mo, Zuhui Fan, Xiaohu Yang, Frank C. van den Bosch. 2013-03-01. Constraining the substructure of dark matter haloes with galaxy-galaxy lensing. https://doi.org/10.1093/mnras%2Fstt133

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