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The ISW imprints of voids and superclusters on the CMB

Published online by Cambridge University Press:  12 October 2016

S. Hotchkiss ,
S. Nadathur ,
S. Gottlöber ,
I. T. Iliev ,
A. Knebe ,
W. A. Watson  and
G. Yepes
S. Hotchkiss*
Affiliation:
Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
S. Nadathur
Affiliation:
Department of Physics, University of Helsinki and Helsinki Institute of Physics, P.O. Box 64, FIN-00014, University of Helsinki, Finland
S. Gottlöber
Affiliation:
Leibniz-Institute for Astrophysics, An der Sternwarte 16, D-14482 Potsdam, Germany
I. T. Iliev
Affiliation:
Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
A. Knebe
Affiliation:
Departamento de Física Teórica, Modulo C-XI, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Cantoblanco, Madrid, Spain
W. A. Watson
Affiliation:
Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, BN1 9QH, UK
G. Yepes
Affiliation:
Departamento de Física Teórica, Modulo C-XI, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Cantoblanco, Madrid, Spain
*
1email: s.a.hotchkiss@sussex.ac.uk
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Abstract

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We examine the stacked integrated Sachs-Wolfe (ISW) imprints on the CMB along the lines of sight of voids and superclusters in galaxy surveys, using the Jubilee ISW simulation and mock luminous red galaxy (LRG) catalogues. We show that the expected signal in the concordance \Lam CDM model is much smaller than the primary anisotropies arising at the last scattering surface and therefore any currently claimed detections of such an imprint cannot be caused by the ISW effect in \Lam CDM. We look for the existence of such a signal in the Planck CMB using a catalogue of voids and superclusters from the Sloan Digital Sky Survey (SDSS), but find a result completely consistent with \Lam CDM – i.e., a null detection.

Keywords

cosmology: cosmic microwave backgrounddark energylarge-scale structure of Universemethods: numericalmethods: data analysis
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 580 - 584
Copyright
Copyright © International Astronomical Union 2016 

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