Speaker
Prof.
Bozena Czerny
(Center for Theoretical Physics, Polish Academy of Sciencies)
Description
The expansion of the Universe at relatively small distances (up to redshifts about 9) can be measured with individual astrophysical sources. I will shortly list those types sources and the used techniques to determine the distance for each individual source. I will present the results of our group based on measurement of the time delays in quasars, and I will discuss the issue of the extinction in the context of comparing radius-luminosity relation distances with distances based on UV-X-ray relation in the same sample of quasars. I will shortly summarize the future prospects in the context of Vera Rubin Observatory and planned LSST.
Primary author
Prof.
Bozena Czerny
(Center for Theoretical Physics, Polish Academy of Sciencies)
