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The cosmic radio dipole and local structure effects

Published online by Cambridge University Press:  01 July 2015

Matthias Rubart ,
David Bacon  and
Dominik J. Schwarz
Matthias Rubart
Affiliation:
Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany email: [email protected]
David Bacon
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Burnaby Road, Portsmouth PO1 3FX, United Kingdom
Dominik J. Schwarz
Affiliation:
Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany email: [email protected]
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Abstract

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We investigate the contribution of a local over- or under-density to linear estimates of the cosmic dipole. We focus on radio continuum surveys. Recently it was shown that the radio dipole amplitude is larger than expected from the corresponding dipole of the CMB. We show that a significant contribution to this excess could come from local structure.

Keywords

Cosmology: observationslarge scale structure of the universeradio surveyspeculiar motion
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Symposium S306: Statistical Challenges in 21st Century Cosmology , May 2014 , pp. 182 - 184
Copyright
Copyright © International Astronomical Union 2015 

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