Planck early results. V. The Low Frequency Instrument data processing

19 páginas, 18 figuras, 3 tablas.-- et al.

Detalles Bibliográficos
Autores: Zacchei, A., López-Caniego, M., Barreiro, R. Belén, Curto, Andrés, Diego, José María, Herranz, Diego, Martínez-González, Enrique, Vielva, Patricio
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/46420
Acceso en línea:http://hdl.handle.net/10261/46420
Access Level:acceso abierto
Palabra clave:Methods: data analysis
Cosmic background radiation
Cosmology: observations
Surveys
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spelling Planck early results. V. The Low Frequency Instrument data processingZacchei, A.López-Caniego, M.Barreiro, R. BelénCurto, AndrésDiego, José MaríaHerranz, DiegoMartínez-González, EnriqueVielva, PatricioMethods: data analysisCosmic background radiationCosmology: observationsSurveys19 páginas, 18 figuras, 3 tablas.-- et al.We describe the processing of data from the Low Frequency Instrument (LFI) used in production of the Planck Early Release Compact Source Catalogue (ERCSC). In particular, we discuss the steps involved in reducing the data from telemetry packets to cleaned, calibrated, time-ordered data (TOD) and frequency maps. Data are continuously calibrated using the modulation of the temperature of the cosmic microwave background radiation induced by the motion of the spacecraft. Noise properties are estimated from TOD from which the sky signal has been removed using a generalized least square map-making algorithm. Measured 1/f noise knee-frequencies range from ~100 mHz at 30 GHz to a few tens of mHz at 70GHz. A destriping code (Madam) is employed to combine radiometric data and pointing information into sky maps, minimizing the variance of correlated noise. Noise covariance matrices required to compute statistical uncertainties on LFI and Planck products are also produced. Main beams are estimated down to the ≈−10dB level using Jupiter transits, which are also used for geometrical calibration of the focal plane.This work was supported by the Academy of Finland grants 121703 and 121962.Peer reviewedEDP Sciences201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/46420reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1051/0004-6361/201116484info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/464202026-05-22T06:33:51Z
dc.title.none.fl_str_mv Planck early results. V. The Low Frequency Instrument data processing
title Planck early results. V. The Low Frequency Instrument data processing
spellingShingle Planck early results. V. The Low Frequency Instrument data processing
Zacchei, A.
Methods: data analysis
Cosmic background radiation
Cosmology: observations
Surveys
title_short Planck early results. V. The Low Frequency Instrument data processing
title_full Planck early results. V. The Low Frequency Instrument data processing
title_fullStr Planck early results. V. The Low Frequency Instrument data processing
title_full_unstemmed Planck early results. V. The Low Frequency Instrument data processing
title_sort Planck early results. V. The Low Frequency Instrument data processing
dc.creator.none.fl_str_mv Zacchei, A.
López-Caniego, M.
Barreiro, R. Belén
Curto, Andrés
Diego, José María
Herranz, Diego
Martínez-González, Enrique
Vielva, Patricio
author Zacchei, A.
author_facet Zacchei, A.
López-Caniego, M.
Barreiro, R. Belén
Curto, Andrés
Diego, José María
Herranz, Diego
Martínez-González, Enrique
Vielva, Patricio
author_role author
author2 López-Caniego, M.
Barreiro, R. Belén
Curto, Andrés
Diego, José María
Herranz, Diego
Martínez-González, Enrique
Vielva, Patricio
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Methods: data analysis
Cosmic background radiation
Cosmology: observations
Surveys
topic Methods: data analysis
Cosmic background radiation
Cosmology: observations
Surveys
description 19 páginas, 18 figuras, 3 tablas.-- et al.
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/46420
url http://hdl.handle.net/10261/46420
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1051/0004-6361/201116484
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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