Peculiar velocity surveys for cosmology: recent results and future plans

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• Matthew Colless (ANU)
• Monday 18 September 2023, 13:05-13:45
• The Hoyle Lecture Theatre + Zoom .

If you have a question about this talk, please contact Hannah Uebler.

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.

This talk is part of the Institute of Astronomy Seminars series.

This talk is included in these lists:

• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• The Hoyle Lecture Theatre + Zoom

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