Radio Monitoring Campaigns of Six Strongly Lensed Quasars

Understand

We observed six strongly lensed, radio-loud quasars (MG 0414+0534, CLASS B0712+472, JVAS B1030+074, CLASS B1127+385, CLASS B1152+199, and JVAS B1938+666) in order to identify systems suitable for measuring cosmological parameters using time delays between their multiple images.

• These systems are in standard two and four image configurations, with B1938 having a faint secondary pair of images.
• Two separate monitoring campaigns were carried out using the VLA and upgraded JVLA.
• Lightcurves were extracted for each individual lensed image and analyzed for signs of intrinsic variability.