Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Footprints of Doppler and Aberration Effects in CMB Experiments:
  Statistical and Cosmological Implications   In the frame of the Solar System, the Doppler and aberration effects cause
distortions in the form of mode couplings in the cosmic microwave background
(CMB) temperature and polarization power spectra and hence impose biases on the
statistics derived by the moving observer. We explore several aspects of such
biases and pay close attention to their effects on CMB polarization which
previously have not been examined in detail. A potentially important bias that
we introduce here is $\textit{boost variance}$---an additional term in cosmic
variance, induced by the observer's motion. Although this additional term is
negligible for whole-sky experiments, in partial-sky experiments it can reach
$10\%$ (temperature) to $20\%$ (polarization) of the standard cosmic variance
($\sigma$). Furthermore, we investigate the significance of motion-induced
$\textit{power}$ and $\textit{parity}$ asymmetries in TT, EE, and TE as well as
potential biases induced in cosmological parameter estimation performed with
whole-sky TTTEEE. Using Planck-like simulations, we find that our local motion
induces $\sim1-2 \%$ hemispherical asymmetry in a wide range of angular scales
in the CMB temperature and polarization power spectra; however, it does not
imply any significant amount of parity asymmetry or shift in cosmological
parameters. Finally, we examine the prospects of measuring the velocity of the
Solar System w.r.t. the CMB with future experiments via the mode coupling
induced by the Doppler and aberration effects. Using the CMB TT, EE, and TE
power spectra up to $\ell=4000$, SO and CMB-S4 can make a dipole-independent
measurement of our local velocity respectively at $8.5\sigma$ and $20\sigma$.

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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: adap-org
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The categories of this paper are: hep-ph
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th