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Does the quasar dipole break LambdaCDM?

Tuesday 11:00 UTC

Recording available

Waterloo, Canada
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Recording

57 min

Abstract

Claims of an unexpectedly large quasar dipole have raised questions about large-scale cosmic isotropy. This talk tests whether survey selection and estimation effects can explain the discrepancy with the motion inferred from the microwave background. Higher angular multipoles in the quasar map can account for the difference, emphasizing the need to control systematic effects before interpreting the signal as a failure of standard cosmology.

Topics

quasar dipolelarge-scale cosmic isotropysurvey selectionestimation effectsmicrowave backgroundangular multipolesquasar mapsystematic effectsstandard cosmology