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arXiv · 0908.3206

Tentative Detection of Quasar Feedback from WMAP and SDSS Cross-Correlation

Suchetana Chatterjee·Shirley Ho·Jeffrey A. Newman·Arthur Kosowsky
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Abstract

We perform a cross-correlation analysis of microwave data from Wilkinson Microwave Anisotropy Probe and photometric quasars from the Sloan Digital Sky Survey, testing for Sunyaev-Zeldovich (SZ) effect from quasars. A statistically significant (2.5 $σ$) temperature decrement exists in the 41 GHz microwave band. A two-component fit to the cross-correlation spectrum incorporating both dust emission and SZ yields a best-fit $y$ parameter of $(7.0 \pm 3.4)\times 10^{-7}$. A similar cross-correlation analysis with the Luminous Red Galaxy sample from Sloan gives a best-fit $y$ parameter of $(5.3 \pm 2.5)\times 10^{-7}$. We discuss the possible physical origin of these signals, which is likely a combination of SZ effects from quasars and from galaxy clusters. Both the Planck Surveyor satellite and current ground-based arcminute-resolution microwave experiments will detect this signal with a higher statistical significance.

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Suchetana Chatterjee, Shirley Ho, Jeffrey A. Newman, Arthur Kosowsky. 2010-06-30. Tentative Detection of Quasar Feedback from WMAP and SDSS Cross-Correlation. https://arxiv.org/abs/0908.3206

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