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Monday 18 September 2023, 13:05-13:45
Peculiar velocity surveys for cosmology: recent results and future plans
- đ¤ Speaker: Matthew Colless (ANU)
- đ Date & Time: Monday 18 September 2023, 13:05 - 13:45
- đ Venue: The Hoyle Lecture Theatre + Zoom
Abstract
The peculiar (non-Hubble) velocities of galaxies are a direct probe of the matter distribution and the nature of gravity. With the advent of dedicated spectroscopic facilities able to measure thousands of spectra simultaneously, peculiar velocity surveys are being incorporated within the new generation of giant galaxy surveys. The sample sizes and volumes of peculiar velocity surveys will consequently increase by more than an order of magnitude, resulting in hundreds of thousands of peculiar velocities over the whole sky. This wealth of data is driving a renaissance in the use of peculiar velocities for cosmology. I will briefly summarise science results from recent analyses of existing surveys, report on the status of ongoing surveys, and describe the goals of next-generation surveys.
Series This talk is part of the Institute of Astronomy Seminars series.
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