Austrian Early Career Conference 2024

Contribution:
Talk

Authors:
Leon Ecker

Affiliations:
LMU Munich, Universitätssternwarte

Title:
SDSS J1741+8842: a gravitationally lensed binary quasar

Abstract:
The Hubble tension, a significant challenge in cosmology, has sparked extensive research efforts to come up with different methods of measuring the Hubble constant. One independent method based on time-delay cosmography uses strong lensed variables sources. The key to the success of this approach lies in the construction of a good strong lensing model. My research focuses on an intriguing system featuring two quasars, one lensed twice and the other four times. I will give an overview of strong lensing and talk about this particular system.