English

Strong lensing probability in TeVeS theory

Astrophysics 2009-06-23 v2

Abstract

We recalculate the strong lensing probability as a function of the image separation in TeVeS (tensor-vector-scalar) cosmology, which is a relativistic version of MOND (MOdified Newtonian Dynamics). The lens is modeled by the Hernquist profile. We assume an open cosmology with Ωb=0.04\Omega_b=0.04 and ΩΛ=0.5\Omega_\Lambda=0.5 and three different kinds of interpolating functions. Two different galaxy stellar mass functions (GSMF) are adopted: PHJ (Panter-Heavens-Jimenez, 2004) determined from SDSS data release one and Fontana (Fontana et al., 2006) from GOODS-MUSIC catalog. We compare our results with both the predicted probabilities for lenses by Singular Isothermal Sphere (SIS) galaxy halos in LCDM (lambda cold dark matter) with Schechter-fit velocity function, and the observational results of the well defined combined sample of Cosmic Lens All-Sky Survey (CLASS) and Jodrell Bank/Very Large Array Astrometric Survey (JVAS). It turns out that the interpolating function μ(x)=x/(1+x)\mu(x)=x/(1+x) combined with Fontana GSMF matches the results from CLASS/JVAS quite well.

Keywords

Cite

@article{arxiv.0712.1633,
  title  = {Strong lensing probability in TeVeS theory},
  author = {Da-Ming Chen},
  journal= {arXiv preprint arXiv:0712.1633},
  year   = {2009}
}

Comments

15 pages, 3 figures, 1 table. Published in JCAP

R2 v1 2026-06-21T09:52:42.425Z