Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tentative Detection of Quasar Feedback from WMAP and SDSS
  Cross-Correlation   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 $\sigma$) 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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The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat