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.
@article{arxiv.1210.2480,
title = {Constraining the substructure of dark matter haloes with galaxy-galaxy lensing},
author = {Ran Li and Houjun Mo and Zuhui Fan and Xiaohu Yang and Frank C. van den Bosch},
journal= {arXiv preprint arXiv:1210.2480},
year = {2013}
}