233 citations · 3.3k across the 110 of their papers we have counts for
5 papers · 1 filter
Strong lensing constraints on the properties of cluster galaxies
Liliya L. R. Williams, Prasenjit Saha
A recently discovered quadruply-imaged QSO, SDSS J1004+4112 (Inada et al. 2003; Oguri et al. 2004) in the core of a galaxy cluster has an unprecedented image separation of…
The phase-space density distribution of dark matter halos
Liliya L. R. Williams, Crystal Austin, Eric Barnes +2
High resolution N-body simulations have all but converged on a common empirical form for the shape of the density profiles of halos, but the full understanding of the underlying ph…
Models of the giant quadruple quasar SDSS J1004+4112
Liliya L. R. Williams, Prasenjit Saha
SDSS J1004+4112 is an unprecedented object. It looks much like several quadruple quasars lensed by individual galaxies, only it is ~10 times larger, and the lens is a cluster domin…
Weak lensing of the high redshift SNIa sample
Liliya L. R. Williams, Jeeseon Song
The current sample of high-redshift Supernova Type Ia, which combines results from two teams, High-z Supernova Search Team and Supernova Cosmology Project, is analyzed for the effe…
A portable modeler of lensed quasars
Prasenjit Saha, Liliya L. R. Williams
We introduce and implement two novel ideas for modeling lensed quasars. The first idea is to require different lenses to agree about H_0. This means that some models for one lens c…