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  1. Article ; Online: Internal Delensing of Cosmic Microwave Background Polarization B-Modes with the POLARBEAR Experiment.

    Adachi, S / Aguilar Faúndez, M A O / Akiba, Y / Ali, A / Arnold, K / Baccigalupi, C / Barron, D / Beck, D / Bianchini, F / Borrill, J / Carron, J / Cheung, K / Chinone, Y / Crowley, K / El Bouhargani, H / Elleflot, T / Errard, J / Fabbian, G / Feng, C /
    Fujino, T / Goeckner-Wald, N / Hasegawa, M / Hazumi, M / Hill, C A / Howe, L / Katayama, N / Keating, B / Kikuchi, S / Kusaka, A / Lee, A T / Leon, D / Linder, E / Lowry, L N / Matsuda, F / Matsumura, T / Minami, Y / Namikawa, T / Navaroli, M / Nishino, H / Peloton, J / Pham, A T P / Poletti, D / Puglisi, G / Reichardt, C L / Segawa, Y / Sherwin, B D / Silva-Feaver, M / Siritanasak, P / Stompor, R / Tajima, O / Takatori, S / Tanabe, D / Teply, G P / Vergès, C

    Physical review letters

    2020  Volume 124, Issue 13, Page(s) 131301

    Abstract: Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more than 5σ significance. We achieve a 14% B-mode power variance reduction, the highest to date for ... ...

    Abstract Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more than 5σ significance. We achieve a 14% B-mode power variance reduction, the highest to date for internal delensing, and improve this result to 22% by applying for the first time an iterative maximum a posteriori delensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial B-mode experiments.
    Language English
    Publishing date 2020-04-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.124.131301
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Evidence for gravitational lensing of the cosmic microwave background polarization from cross-correlation with the cosmic infrared background.

    Ade, P A R / Akiba, Y / Anthony, A E / Arnold, K / Atlas, M / Barron, D / Boettger, D / Borrill, J / Borys, C / Chapman, S / Chinone, Y / Dobbs, M / Elleflot, T / Errard, J / Fabbian, G / Feng, C / Flanigan, D / Gilbert, A / Grainger, W /
    Halverson, N W / Hasegawa, M / Hattori, K / Hazumi, M / Holzapfel, W L / Hori, Y / Howard, J / Hyland, P / Inoue, Y / Jaehnig, G C / Jaffe, A / Keating, B / Kermish, Z / Keskitalo, R / Kisner, T / Le Jeune, M / Lee, A T / Leitch, E M / Linder, E / Lungu, M / Matsuda, F / Matsumura, T / Meng, X / Miller, N J / Morii, H / Moyerman, S / Myers, M J / Navaroli, M / Nishino, H / Paar, H / Peloton, J / Poletti, D / Quealy, E / Rebeiz, G / Reichardt, C L / Richards, P L / Ross, C / Rotermund, K / Schanning, I / Schenck, D E / Sherwin, B D / Shimizu, A / Shimmin, C / Shimon, M / Siritanasak, P / Smecher, G / Spieler, H / Stebor, N / Steinbach, B / Stompor, R / Suzuki, A / Takakura, S / Tikhomirov, A / Tomaru, T / Wilson, B / Yadav, A / Zahn, O

    Physical review letters

    2014  Volume 112, Issue 13, Page(s) 131302

    Abstract: We reconstruct the gravitational lensing convergence signal from cosmic microwave background (CMB) polarization data taken by the Polarbear experiment and cross-correlate it with cosmic infrared background maps from the Herschel satellite. From the cross ...

    Abstract We reconstruct the gravitational lensing convergence signal from cosmic microwave background (CMB) polarization data taken by the Polarbear experiment and cross-correlate it with cosmic infrared background maps from the Herschel satellite. From the cross spectra, we obtain evidence for gravitational lensing of the CMB polarization at a statistical significance of 4.0σ and indication of the presence of a lensing B-mode signal at a significance of 2.3σ. We demonstrate that our results are not biased by instrumental and astrophysical systematic errors by performing null tests, checks with simulated and real data, and analytical calculations. This measurement of polarization lensing, made via the robust cross-correlation channel, not only reinforces POLARBEAR auto-correlation measurements, but also represents one of the early steps towards establishing CMB polarization lensing as a powerful new probe of cosmology and astrophysics.
    Language English
    Publishing date 2014-04-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.112.131302
    Database MEDical Literature Analysis and Retrieval System OnLINE

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