Year: 2009
Type: article
Abstract: Large-scale matter bulk flows with respect to the cosmic microwave background have very recently been detected on scales ≲ 100 h −1 Mpc and ≲ 300 h −1 Mpc by using two different techniques showing an excellent agreement in the motion direction. However, the unexpectedly large measured amplitudes are difficult to understand within the context of standard ΛCDM cosmology. In this work we show that the existence of such a flow could be signaling the presence of moving dark energy at the time when photons decoupled from matter. We also comment on the relation between the direction of the CMB dipole and the preferred axis observed in the quadrupole in this scenario.
Authors: Jose Beltrán Jiménez, Antonio L Maroto
Institution: Universidad Complutense de Madrid
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2108677260