Is B1422+231 a Golden Lens?
Astrophysics
2009-11-07 v1
Abstract
B1422+231 is a quadruply-imaged QSO with an exceptionally large lensing contribution from group galaxies other than the main lensing galaxy. We detect diffuse X-rays from the galaxy group in archival Chandra observations; the inferred temperature is consistent with the published velocity dispersion. We then explore the range of possible mass maps that would be consistent with the observed image positions, radio fluxes, and ellipticities. Under plausible but not very restrictive assumptions about the lensing galaxy, predicted time delays involving the faint fourth image are fairly well constrained around 7/h days.
Keywords
Cite
@article{arxiv.astro-ph/0303366,
title = {Is B1422+231 a Golden Lens?},
author = {Somak Raychaudhury and Prasenjit Saha and Liliya L. R. Williams},
journal= {arXiv preprint arXiv:astro-ph/0303366},
year = {2009}
}
Comments
17 pages, 9 figures, to appear in the June/03 issue of AJ