Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Weakly-interacting massive particles wikipedia , lookup
Outer space wikipedia , lookup
Big Bang nucleosynthesis wikipedia , lookup
Cosmic microwave background wikipedia , lookup
Astronomical spectroscopy wikipedia , lookup
Shape of the universe wikipedia , lookup
Probing the Early Universe with Distant Galaxies by Dr Joseph Caruana of the Astrophysikalisches Institut Potsdam Date: Thursday 7th of March 2013 Time: 15:00 – 16:00 Venue: Chemistry Lecture Room (CLR) in the Chemistry Building Abstract: The last few years have witnessed rapid growth in our knowledge of the early universe as we have pushed the frontier in exploring ever farther galaxies. The installation of Wide Field Camera 3 (WFC3) on the Hubble Space Telescope in 2009 opened up the possibility of discovering galaxies in the first billion years of the universe's history. Some of these galaxies have been followed up with observations undertaken from the ground to obtain their spectra and infer further clues about the universe during its infancy. In particular, a lot of effort has been aimed at investigating one of the outstanding problems of modern observational cosmology - understanding the Epoch of Reionisation, which is when matter in the universe became ionised. This phase marked the end of the universe's Dark Ages and the universe became transparent to radiation. During this talk I will give an overview of the topic, describe the results of my work in the field and outline the many open questions that remain to be answered by future observations. Attendance for the seminar is free of charge and everyone is welcome. The information can also be found on Facebook