Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stacking Clusters in the ROSAT All-Sky Survey   Ongoing and planned wide-area surveys at optical and infrared wavelengths
should detect a few times 10^5 galaxy clusters, roughly 10% of which are
expected to be at redshifts >~ 0.8. We investigate what can be learned about
the X-ray emission of these clusters from the ROSAT All-Sky Survey. While
individual clusters at redshifts >~ 0.5 contribute at most a few photons to the
survey, a significant measurement of the mean flux of cluster subsamples can be
obtained by stacking cluster fields. We show that the mean X-ray luminosity of
clusters with mass M >~ 2 x 10^{14} M_sun/h selected from the Sloan Digital Sky
Survey should be measurable out to redshift unity with signal-to-noise >~ 10,
even if clusters are binned with Delta z=0.1 and Delta ln M ~ 0.3. For such
bins, suitably chosen hardness ratio allows the mean temperature of clusters to
be determined out to z ~ 0.7 with a relative accuracy of Delta T/T <~ 0.15 for
M > 10^{14} M_sun/h.

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The categories of this paper are: physics
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-th