University of Waterloo
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567 ext 32215
Fax: (519) 746-8115
Anže Slosar graduated from Cambridge, followed by postdocs in Ljubljana (Slovenia), Oxford and Berkeley before moving to a staff Scientist position at Brookhaven National Laboratory. He is a group leader for Cosmology & Astrophysics Group. He is interested in all experimental probes of cosmology and has worked on numerous topics including Lyman-alpha forest, galaxy clustering, primordial non-Gaussianity and recently on analysis of photometric galaxy surveys.
Talk Title and Abstract:
21cm in the 21st century
Universe is full of neutral hydrogen shining in the 21-cm spin-flip transition. Using this line to trace cosmic structure allows us to map the large scale structure in three dimensions very efficiently. In practice, this technique has proven to be devilishly difficult. I will argue that it nevertheless offers the most promising way to complete the programmatic goal of measuring the linear scales of the universe deep into the pre-acceleration era after the current crop of optical experiments complete observing. It will measure expansion history and cosmic growth measurements to redshift z=6, characterize inflation throught primordial non-Gaussianity and relic features in the primordial power spectrum, add several new high-redshift screens to study weak gravitational lensing and perhaps even allow direct measurements of the real-time expansion of the universe. I will discuss PUMA, an ambitious 21cm intensity mapping proposal and discuss the scientific, technological and programmatic issues that we need overcome to make it become real.
Would you like to join this Zoom seminar? Please email Donna Hayes.
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Indigenous Initiatives Office.