Chandra Observations of New Quadruply Lensed Quasars
Abstract
Our and others' previous work has shown the unique power of Chandra observations of quadruply gravitationally lensed quasars to address several fundamental astrophysical issues. We have used these observations to (1) determine the cause of flux ratio anomalies, (2) measure the sizes of quasar accretion disks, (3) determine the dark matter content of the lensing galaxies, and (4) measure the stellar mass-to-light ratio (in fact, this is the only way to measure the stellar mass-to-light ratio beyond the solar neighborhood). In all cases, the main source of uncertainty in the results is the small size of the sample of known quadruply lensed quasars; until recently, only about 15 systems were available for study with Chandra. We have been granted Chandra observations of seven recently discovered quadruply lensed quasars and one quintuply lensed quasar, and we report preliminary results from these observations.
- Publication:
-
American Astronomical Society Meeting Abstracts #235
- Pub Date:
- January 2020
- Bibcode:
- 2020AAS...23523306P