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Article: Impact of instrumental systematic contamination on the lensing mass reconstruction using the CMB polarization

TitleImpact of instrumental systematic contamination on the lensing mass reconstruction using the CMB polarization
Authors
Issue Date2009
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2009, v. 79, n. 12 How to Cite?
AbstractIn this paper, we study the effects of instrumental systematics on the reconstruction of the deflection angle power spectrum from weak lensing of cosmic microwave background (CMB) temperature and polarization observations. We consider 7 types of effects which are related to known instrumental systematics: calibration, rotation, pointing, spin-flip, monopole leakage, dipole leakage, and quadrupole leakage. These effects can result in the distortion in the CMB field and can be characterized by 11 distortion fields. Each of these systematic effects can mimic the effective projected matter power spectrum and hence contaminate the lensing reconstruction. To demonstrate the effect of these instrumental systematics on CMB lensing measurements, we consider two types of experiments: one with a detector noise level for polarization of 9.6μK arcmin and FWHM of 8.0′, typical of upcoming ground and balloon-based CMB experiments; and a CMBPol-like instrument with a detector noise level for polarization of 2.0μK arcmin and FWHM of 4.0′, typical of future space-based CMB experiments. For each systematics field, we consider various choices of coherence scale αs, starting from αs=10′ to the maximum of αs=120′. Among all the 11 systematic parameters, rotation ω, and monopole leakage γa & γb place the most stringent requirements, while quadrupole leakage q, pointing error pa and pb, and calibration a are among the least demanding. The requirements from lensing extraction are about 1-2 orders of magnitude less stringent than the requirements to measure the primordial B modes with an inflationary energy scale of 1.0×1016GeV. On the other hand, the requirements for lensing reconstruction are comparable or even more stringent for some systematic parameters than the requirements to detect primordial B modes with an inflationary scale of Ei=3.0×1016GeV. © 2009 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/226685
ISSN
2014 Impact Factor: 4.643
2015 SCImago Journal Rankings: 1.882

 

DC FieldValueLanguage
dc.contributor.authorSu, Meng-
dc.contributor.authorYadav, Amit P S-
dc.contributor.authorZaldarriaga, Matias-
dc.date.accessioned2016-06-29T01:58:18Z-
dc.date.available2016-06-29T01:58:18Z-
dc.date.issued2009-
dc.identifier.citationPhysical Review D - Particles, Fields, Gravitation and Cosmology, 2009, v. 79, n. 12-
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/10722/226685-
dc.description.abstractIn this paper, we study the effects of instrumental systematics on the reconstruction of the deflection angle power spectrum from weak lensing of cosmic microwave background (CMB) temperature and polarization observations. We consider 7 types of effects which are related to known instrumental systematics: calibration, rotation, pointing, spin-flip, monopole leakage, dipole leakage, and quadrupole leakage. These effects can result in the distortion in the CMB field and can be characterized by 11 distortion fields. Each of these systematic effects can mimic the effective projected matter power spectrum and hence contaminate the lensing reconstruction. To demonstrate the effect of these instrumental systematics on CMB lensing measurements, we consider two types of experiments: one with a detector noise level for polarization of 9.6μK arcmin and FWHM of 8.0′, typical of upcoming ground and balloon-based CMB experiments; and a CMBPol-like instrument with a detector noise level for polarization of 2.0μK arcmin and FWHM of 4.0′, typical of future space-based CMB experiments. For each systematics field, we consider various choices of coherence scale αs, starting from αs=10′ to the maximum of αs=120′. Among all the 11 systematic parameters, rotation ω, and monopole leakage γa & γb place the most stringent requirements, while quadrupole leakage q, pointing error pa and pb, and calibration a are among the least demanding. The requirements from lensing extraction are about 1-2 orders of magnitude less stringent than the requirements to measure the primordial B modes with an inflationary energy scale of 1.0×1016GeV. On the other hand, the requirements for lensing reconstruction are comparable or even more stringent for some systematic parameters than the requirements to detect primordial B modes with an inflationary scale of Ei=3.0×1016GeV. © 2009 The American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review D - Particles, Fields, Gravitation and Cosmology-
dc.titleImpact of instrumental systematic contamination on the lensing mass reconstruction using the CMB polarization-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevD.79.123002-
dc.identifier.scopuseid_2-s2.0-67649360027-
dc.identifier.volume79-
dc.identifier.issue12-
dc.identifier.spagenull-
dc.identifier.epagenull-
dc.identifier.eissn1550-2368-

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