Measuring bulk flows with the kinematic Sunyaev-Zeldovich effect in CMB maps

  1. Fernando Atrio-Barandela 1
  2. Carlos Hernández-Monteagudo 1
  3. Alexander Kashlinsky 2
  1. 1 Física Teórica, Facultad de Ciencias, Universidad de Salamanca
  2. 2 Raytheon ITSS, Code 685, Goddard Space Flight Center, Greenbelt
Libro:
Mining of the sky: proceedings of the MPA/ESO/MPE Workshop held at Garching, Germany, July 31 – August 4, 2000

Editorial: Springer

ISSN: 1431-2433

ISBN: 3540424687,  978-3-540-44665-1,  978-3-540-42468-0

Año de publicación: 2001

Páginas: 473-475

Tipo: Capítulo de Libro

DOI: 10.1007/10849171_60 GOOGLE SCHOLAR lock_openAcceso abierto editor

Resumen

We propose a new method to measure the possible large-scale bulk flows in the Universe from cosmic microwave background temperature anisotropy maps. At each cluster position, temperature fluctuations are a combination of Sunyaev-Zeldovich kinematic and thermal components, cosmological fluctuations and instrument noise. When averaged over many clusters the last three will integrate down, whereas the first one will be dominated by a possible bulk flow component. We get that at the 95% confidence level the bulk flows on scales ≥100h−1Mpc can be probed down to the amplitude of < 200 km/sec with the MAP data and down to only ⋍30 km/sec with the Planck mission.