PIRSA:14060041 Scientific Series Cosmology

DOI10.48660/14060041

Series: Colloquium

Pen, U. (2014). Neutrino Wakes. Perimeter Institute. https://pirsa.org/14060041

Pen, Ue-Li. Neutrino Wakes. Perimeter Institute, Jun. 06, 2014, https://pirsa.org/14060041 

@misc{ pirsa_PIRSA:14060041,
  doi = {10.48660/14060041},
  url = {https://pirsa.org/14060041},
  author = {Pen, Ue-Li},
  keywords = {Cosmology},
  language = {en},
  title = {Neutrino Wakes},
  publisher = {Perimeter Institute},
  year = {2014},
  month = {jun},
  note = {PIRSA:14060041 see, \url{https://pirsa.org}}
}

Abstract

We identify a new non-linear neutrino wake effect, due to the streaming motions of neutrinos relative to dark matter, analogous to the Tseliakhovich-Hirata effect. We compute the effect in moving background perturbation theory, compare to direct n-body simulations, and forecast its observability in current and future surveys. Depending on neutrino mass, this effect could be observable in upcoming surveys through a cross correlation dipole in lensing and galaxies. Unlike previous cosmological neutrino effects, this depends primarily on neutrino mass, making it complementary to measurements that depend on neutrino density.

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