ArtDeco: A beam deconvolution code for absolute CMB measurements

Elina Keih\"anen; Martin Reinecke

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ArtDeco: A beam deconvolution code for absolute CMB measurements

Elina Keihänen, Martin Reinecke

Instrumentation and Methods for Astrophysics · Submitted 7 Aug 2012

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The method is applicable to absolute CMB measurements with wide sky coverage, and is independent of the scanning strategy.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,515 input tokens, $0.0002 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.28 · human participants 0.01 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.60 · compares with prior results 0.08 · mentions code or data availability 0.05.

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We present a method for beam deconvolution for cosmic microwave background (CMB) anisotropy measurements. The code takes as input the time-ordered data, along with the corresponding detector pointings and known beam shapes, and produces as output the harmonic a_Tlm, a_Elm, and a_Blm coefficients of the observed sky. From these one can further construct temperature and Q and U polarisation maps. The method is applicable to absolute CMB measurements with wide sky coverage, and is independent of the scanning strategy. We test the code with extensive simulations, mimicking the resolution and data volume of Planck 30GHz and 70GHz channels, but with exaggerated beam asymmetry. We apply it to multipoles up to l=1700 and examine the results in both pixel space and harmonic space. We also test the method also in presence of white noise.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We present a method for beam deconvolution for cosmic microwave background (CMB) anisotropy measurements.	contribution 1.00	0.91	0.27	asserted 0.99
s1	The code takes as input the time-ordered data, along with the corresponding detector pointings and known beam shapes, and produces as output the harmonic a_Tlm, a_Elm, and a_Blm coefficients of the observed sky.	method 0.99	0.74	0.07	asserted 1.00
s2	From these one can further construct temperature and Q and U polarisation maps.	method 0.82	0.35	0.06	asserted 0.71
s3	The method is applicable to absolute CMB measurements with wide sky coverage, and is independent of the scanning strategy.	contribution 0.41	0.37	0.16	asserted 1.00
s4	We test the code with extensive simulations, mimicking the resolution and data volume of Planck 30GHz and 70GHz channels, but with exaggerated beam asymmetry.	method 0.88	0.96	0.04	asserted 0.99
s5	We apply it to multipoles up to l=1700 and examine the results in both pixel space and harmonic space.	method 0.61	0.96	0.08	asserted 0.98
s6	We also test the method also in presence of white noise.	method 0.63	0.93	0.05	asserted 0.99

What kind of paper the classifier reports this is: method or tool 1.00 · evidence from simulation or computation 1.00.

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arXiv listing abstract v2

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full text
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

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Original abstract

We present a method for beam deconvolution for cosmic microwave background (CMB) anisotropy measurements. The code takes as input the time-ordered data, along with the corresponding detector pointings and known beam shapes, and produces as output the harmonic a_Tlm, a_Elm, and a_Blm coefficients of the observed sky. From these one can further construct temperature and Q and U polarisation maps. The method is applicable to absolute CMB measurements with wide sky coverage, and is independent of the scanning strategy. We test the code with extensive simulations, mimicking the resolution and data volume of Planck 30GHz and 70GHz channels, but with exaggerated beam asymmetry. We apply it to multipoles up to l=1700 and examine the results in both pixel space and harmonic space. We also test the method also in presence of white noise.

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3 arXiv papers cite this in 3 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

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At the same time, several deconvolution algorithms and codes have been proposed to clean up the CMB maps from such beam-related effects prior to the computation of the power spectra, like PreBeam [ref] , ArtDeco [ref] , and in [ref] and [ref] .

QuickPol: Fast calculation of effective beam matrices for CMB polarization · Introduction · 0.80

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