PixeLens: A Portable Modeler of Lensed Quasars
Abstract
We introduce and implement two novel ideas for modeling lensed quasars. The first is to require different lenses to agree about H0. This means that some models for one lens can be ruled out by data on a different lens. We explain using two worked examples. One example models 1115+080 and 1608+656 (timedelay quadruple systems) and 1933+503 (a prospective timedelay system) all together, yielding timedelay predictions for the third lens and a 90% confidence estimate of H01=14.6+9.41.7 Gyr (H0=67+926 km s1 Mpc1) assuming â¦M=0.3 and â¦Λ=0.7. The other example models the timedelay doubles 1520+530, 1600+434, 1830211, and 2149275, which gives H01=14.5+3.31.5 Gyr (H0=67+813 km s1 Mpc1). Our second idea is to write the modeling software as a highly interactive Java applet, which can be used both for coarsegrained results inside a browser and for finegrained results on a workstation. Several obstacles come up in trying to implement a numerically intensive method thus, but we overcome them.
 Publication:
 Astrophysics Source Code Library
 Pub Date:
 February 2011
 Bibcode:
 2011ascl.soft02007S
 Keywords:

 Software