TY - JOUR AB - Analysis of cosmic microwave background (CMB) datasets typically requires some filtering of the raw time-ordered data. For instance, in thecontext of ground-based observations, filtering is frequently used to minimize the impact of low frequency noise, atmospheric contributions and/orscan synchronous signals on the resulting maps. In this work we have explicitly constructed a general filtering operator, which can unambiguouslyremove any set of unwanted modes in the data, and then amend the map-making procedure in order to incorporate and correct for it. We showthat such an approach is mathematically equivalent to the solution of a problem in which the sky signal and unwanted modes are estimatedsimultaneously and the latter are marginalized over. We investigated the conditions under which this amended map-making procedure can renderan unbiased estimate of the sky signal in realistic circumstances. We then discuss the potential implications of these observations on the choice ofmap-making and power spectrum estimation approaches in the context of B-mode polarization studies. Specifically, we have studied the effects oftime-domain filtering on the noise correlation structure in the map domain, as well as impact it may have on the performance of the popular pseudospectrumestimators. We conclude that although maps produced by the proposed estimators arguably provide the most faithful representation ofthe sky possible given the data, they may not straightforwardly lead to the best constraints on the power spectra of the underlying sky signal andspecial care may need to be taken to ensure this is the case. By contrast, simplified map-makers which do not explicitly correct for time-domainfiltering, but leave it to subsequent steps in the data analysis, may perform equally well and be easier and faster to implement. We focused onpolarization-sensitive measurements targeting the B-mode component of the CMB signal and apply the proposed methods to realistic simulationsbased on AU - Poletti,D AU - Fabbian,G AU - Le,Jeune M AU - Peloton,J AU - Arnold,K AU - Baccigalupi,C AU - Barron,D AU - Beckman,S AU - Borrill,J AU - Chapman,S AU - Chinone,Y AU - Cukierman,A AU - Ducout,A AU - Elleflot,T AU - Errard,J AU - Feeney,S AU - Goeckner-Wald,N AU - Groh,J AU - Hall,G AU - Hasegawa,M AU - Hazumi,M AU - Hill,C AU - Howe,L AU - Inoue,Y AU - Jaffe,AH AU - Jeong,O AU - Katayama,N AU - Keating,B AU - Keskitalo,R AU - Kisner,T AU - Kusaka,A AU - Lee,AT AU - Leon,D AU - Linder,E AU - Lowry,L AU - Matsuda,F AU - Navaroli,M AU - Paar,H AU - Puglisi,G AU - Richardt,CL AU - Ross,C AU - Siritanasak,P AU - Stebor,N AU - Steinbach,B AU - Stompor,R AU - Suzuki,A AU - Tajima,O AU - Teply,G AU - Whitehorn,N DO - 0004-6361/201629467 PY - 2017/// SN - 0004-6361 TI - Making maps of cosmic microwave background polarization for B-mode studies: the POLARBEAR example T2 - Astronomy and Astrophysics UR - http://dx.doi.org/10.1051/0004-6361/201629467 UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000400754000059&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202 UR - http://hdl.handle.net/10044/1/60511 VL - 600 ER -