dc.contributor.author |
Ade P. |
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dc.contributor.author |
Aghanim N. |
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Ashdown M. |
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dc.contributor.author |
Aumont J. |
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Baccigalupi C. |
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dc.contributor.author |
Banday A. |
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dc.contributor.author |
Barreiro R. |
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Bartolo N. |
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Basak S. |
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Battaner E. |
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Benabed K. |
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Benoit-Lévy A. |
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Bernard J. |
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Bersanelli M. |
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Bielewicz P. |
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Bock J. |
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Bonaldi A. |
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Bonavera L. |
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Bond J. |
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Borrill J. |
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Bouchet F. |
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Boulanger F. |
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Burigana C. |
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Butler R. |
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Calabrese E. |
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Cardoso J. |
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Catalano A. |
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Chiang H. |
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Christensen P. |
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Clements D. |
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Colombo L. |
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Crill B. |
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Danese L. |
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Davis R. |
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De Bernardis P. |
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De Zotti G. |
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Delabrouille J. |
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Dickinson C. |
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dc.contributor.author |
Diego J. |
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dc.contributor.author |
Doré O. |
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dc.contributor.author |
Ducout A. |
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dc.contributor.author |
Dupac X. |
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dc.contributor.author |
Elsner F. |
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dc.contributor.author |
Enßlin T. |
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dc.contributor.author |
Eriksen H. |
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dc.contributor.author |
Finelli F. |
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dc.contributor.author |
Forni O. |
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dc.contributor.author |
Frailis M. |
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dc.contributor.author |
Fraisse A. |
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dc.contributor.author |
Franceschi E. |
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dc.contributor.author |
Galeotta S. |
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dc.contributor.author |
Galli S. |
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dc.contributor.author |
Ganga K. |
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dc.contributor.author |
Ghosh T. |
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dc.contributor.author |
Giard M. |
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dc.contributor.author |
Giraud-Héraud Y. |
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dc.contributor.author |
Gjerløw E. |
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dc.contributor.author |
González-Nuevo J. |
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dc.contributor.author |
Górski K. |
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dc.contributor.author |
Gruppuso A. |
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dc.date.accessioned |
2018-09-19T20:05:48Z |
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dc.date.available |
2018-09-19T20:05:48Z |
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dc.date.issued |
2016 |
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dc.identifier.issn |
0004-6361 |
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dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/142556 |
|
dc.description.abstract |
© ESO, 2016.The secondary cosmic microwave background (CMB) B-modes stem from the post-decoupling distortion of the polarization E-modes due to the gravitational lensing effect of large-scale structures. These lensing-induced B-modes constitute both a valuable probe of the dark matter distribution and an important contaminant for the extraction of the primary CMB B-modes from inflation. Planck provides accurate nearly all-sky measurements of both the polarization E-modes and the integrated mass distribution via the reconstruction of the CMB lensing potential. By combining these two data products, we have produced an all-sky template map of the lensing-induced B-modes using a real-space algorithm that minimizes the impact of sky masks. The cross-correlation of this template with an observed (primordial and secondary) B-mode map can be used to measure the lensing B-mode power spectrum at multipoles up to 2000. In particular, when cross-correlating with the B-mode contribution directly derived from the Planck polarization maps, we obtain lensing-induced B-mode power spectrum measurement at a significance level of 12σ, which agrees with the theoretical expectation derived from the Planck best-fit Λ cold dark matter model. This unique nearly all-sky secondary B-mode template, which includes the lensing-induced information from intermediate to small (10 ≤ l ≤ 1000) angular scales, is delivered as part of the Planck 2015 public data release. It will be particularly useful for experiments searching for primordial B-modes, such as BICEP2/Keck Array or LiteBIRD, since it will enable an estimate to be made of the lensing-induced contribution to the measured total CMB B-modes. |
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dc.relation.ispartofseries |
Astronomy and Astrophysics |
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dc.subject |
Cosmic background radiation |
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dc.subject |
Cosmology: observations |
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dc.subject |
Gravitational lensing: weak |
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dc.subject |
Polarization |
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dc.title |
Planck intermediate results: XLI. A map of lensing-induced B -modes |
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dc.type |
Article |
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dc.relation.ispartofseries-volume |
596 |
|
dc.collection |
Публикации сотрудников КФУ |
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dc.source.id |
SCOPUS00046361-2016-596-SID85006789918 |
|