Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finding the Missing Baryons with Fast Radio Bursts and Sunyaev-Zeldovich
  Maps   Almost a third of the cosmic baryons are "missing" at low redshifts, as they
reside in the invisible warm-hot intergalactic medium (WHIM). The thermal
Sunyaev-Zeldovich (tSZ) effect, which measures the line-of-sight integral of
the plasma pressure, can potentially detect this WHIM, although its expected
signal is hidden below the noise. Extragalactic dispersion measures
(DMs)---obtained through observations of fast radio bursts (FRBs)---are
excellent tracers of the WHIM, as they measure the column density of plasma,
regardless of its temperature. Here we propose cross correlating DMs and tSZ
maps as a new way to find and characterize the missing baryons in the WHIM. Our
method relies on the precise ($\sim$ arcminute) angular localization of FRBs to
assign each burst a DM and a $y$ parameter. We forecast that the signal from
the WHIM should be confidently detected in a cross-correlation analysis of
$\sim10^4$ FRBs, expected to be gathered in a year of operation of the upcoming
CHIME and HIRAX radio arrays, confirming the recent tentative detections of
filamentary WHIM. Using this technique, future CMB probes (which might lower
the tSZ noise) could determine both the temperature of the WHIM and its
evolution to within tens of percent. Altogether, DM-tSZ cross correlations hold
great promise for studying the baryons in the local Universe.

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The categories of this paper are: physics
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
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The categories of this paper are: q-fin