Journal article
Measurement of the thermal Sunyaev-Zel'dovich effect around cosmic voids
- Abstract:
- We stack maps of the thermal Sunyaev-Zel’dovich effect produced by the Planck Collaboration around the centers of cosmic voids defined by the distribution of galaxies in the CMASS sample of the Baryon Oscillation Spectroscopic Survey, scaled by the void effective radii. We report a first detection of the associated cross-correlation at the 3.4σ level: voids are under-pressured relative to the cosmic mean. We compare the measured Compton-y profile around voids with a model based solely on the spatial modulation of halo abundance with environmental density. The amplitude of the detected signal is marginally lower than predicted by an overall amplitude αv = 0.67 ± 0.2. We discuss the possible interpretations of this measurement in terms of modelling uncertainties, excess pressure in low-mass halos, or non-local heating mechanisms.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 890.6KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.97.063514
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 97
- Issue:
- 6
- Article number:
- 063514
- Publication date:
- 2018-03-14
- Acceptance date:
- 2018-02-14
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Pubs id:
-
pubs:824478
- UUID:
-
uuid:4d0b7f78-129e-4f0f-b82b-cd31101cd20e
- Local pid:
-
pubs:824478
- Source identifiers:
-
824478
- Deposit date:
-
2018-02-14
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2018
- Notes:
- Copyright © 2018 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: https://doi.org/10.1103/PhysRevD.97.063514
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