Cambridge Astronomical Association
(CAA)
&
Cambridge Young Astronomers
(CYA)

 


Speaker Meeting

Quasars
Friday 16th August 2019
Start time : 20:00

Speaker : Prof.Paul Hewett


This evenings talk will take a look at the strange objects known as quasars, from their discovery in the 1960s through to how we first gained and understanding of them and then began to use them as tools to help us understand the rest of the Universe

Prof.Hewett's research interests encompass a broad range of topics from the content and structure of our own Galaxy's halo through to the detection of the most distant known quasars. A common theme is the development of new statistical analysis techniques which are then applied to very large data sets to study object populations of current theoretical interest in astrophysics. Much of his recent research has employed spectra from the Sloan Digital Sky Survey (SDSS) database. Current projects include the use of intervening absorption lines in quasars to provide a more complete understanding of galaxy evolution by understanding how gaseous material surrounding galaxies is related to the star formation histories and global properties of galaxies. Developing a better understanding of quasar outflows and how feedback associated with the presence of central massive black holes influences the evolution of galaxies is another topic of interest.

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