Advertisement
Each spring, near the date of Svein Rosseland's birthday, the Institute of Theoretical Astrophysics invites everyone to a guest lecture as a remembrance for our great astrophysicist Svein Rosseland (1894-1985), founder of our institute.Title: "Viewing the early universe"
Speaker: Professor Jo Dunkley OBE FRS, Princeton University
Abstract:
Our earliest view of the universe, less than half a million years after the Big Bang, comes from the cosmic microwave background radiation. Dunkley will talk about astronomers' quest to use this image to understand the history of the universe, and the fundamental physics describing it.
New observations from the Atacama Cosmology Telescope over half the sky reveal a higher constrast map of this early picture, adding to satellite data from the Planck and WMAP missions. Measuring the polarization of the light also gives us a new view of the early epoch. These latest observations are allowing us to weigh in on a conundrum facing astronomers today: our community’s methods of measuring the rate that space is growing, and the age of the universe, don’t all agree.
Have we got something wrong in our understanding of the universe?
She will describe how the current data, and upcoming measurements from the new Simons Observatory, are helping scientists tackle this question. With this new survey capturing half the sky every couple of days in millimeter wavelengths, astronomers also hope to see new types of astronomical events in distant parts of the universe.
Cover image: This artist's impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the cosmic microwave background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Credits: CfA/M. Weiss
-----------
This year’s Rosseland Lecture will be held by Professor Jo Dunkley, FRS, the Joseph Henry Professor of Physics and Astrophysical Sciences at Princeton University. Currently she is on sabbatical leave 2024-25 in Cambridge, as a Royal Society Wolfson Visiting Fellow.
More information can be found here: https://www.mn.uio.no/astro/english/research/news-and-events/events/guest-lectures-seminars/2025/rosseland-lecture-2025.html
----------
Organizers
Institute of Theoretical Astrophysics and The Science Library
Advertisement
Event Venue & Nearby Stays
UiO : Realfagsbiblioteket, Moltke Moes vei 35,Oslo, Norway
