PIRSA:14090077 Scientific Series Cosmology

DOI10.48660/14090077

Series: Cosmology and Gravitation

Hudson, M. (2014). Cosmic flows: testing gravity and the matter power spectrum on very large scales. Perimeter Institute. https://pirsa.org/14090077

Hudson, Mike. Cosmic flows: testing gravity and the matter power spectrum on very large scales. Perimeter Institute, Sep. 16, 2014, https://pirsa.org/14090077 

@misc{ pirsa_PIRSA:14090077,
  doi = {10.48660/14090077},
  url = {https://pirsa.org/14090077},
  author = {Hudson, Mike},
  keywords = {Cosmology},
  language = {en},
  title = {Cosmic flows: testing gravity and the matter power spectrum on very large scales},
  publisher = {Perimeter Institute},
  year = {2014},
  month = {sep},
  note = {PIRSA:14090077 see, \url{https://pirsa.org}}
}

Abstract

Peculiar velocities - deviations from Hubble expansion - are the only practical probe of the growth of matter density fluctuations on very large scales in the nearby Universe. I will discuss recent measurements of quantities of cosmological interest from our group and others. One is the "bulk" flow of nearby galaxies with respect to the frame defined by the Cosmic Microwave Background, and what this tells us about fluctuations on large very spatial scales. The second is the measurement of the growth rate of fluctuations, a critical test of Lambda CDM and modified gravity models.

Resources

Next talk

Related Talks