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The Jubilee ISW Project - II. Observed and simulated imprints of voids and superclusters on the cosmic microwave background
journal contribution
posted on 2023-06-09, 07:01 authored by S Hotchkiss, S Nadathur, S Gottlöber, Ilian IlievIlian Iliev, A Knebe, W A Watson, G YepesWe examine the integrated Sachs–Wolfe (ISW) imprint of voids and superclusters on the cosmic microwave background. We first study results from the Jubilee N-body simulation. From Jubilee, we obtain the full-sky ISW signal from structures out to redshift z = 1.4 and a mock luminous red galaxy catalogue. We confirm that the expected signal in the concordance cold dark matter (CDM) model is very small and likely to always be much smaller than the anisotropies arising at the last scattering surface. Any current detections of such an imprint must, therefore, predominantly arise from something other than an ISW effect in a CDM universe. Using the simulation as a guide, we then look for the signal using a catalogue of voids and superclusters from the Sloan Digital Sky Survey. We find a result that is consistent with the CDM model, i.e. a signal consistent with zero.
Funding
Astronomy rolling grant; G0278; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I000976/1
History
Publication status
- Published
File Version
- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
2Volume
446Page range
1321-1334Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Astronomy Centre Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2017-07-06First Open Access (FOA) Date
2017-07-06First Compliant Deposit (FCD) Date
2017-07-06Usage metrics
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