Maximum a posteriori CMB lensing reconstruction

被引：80

作者：

Carron, Julien ^{[1
]}

Lewis, Antony ^{[1
]}

机构：

[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 06期

基金：

欧洲研究理事会;

关键词：

D O I：

10.1103/PhysRevD.96.063510

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Gravitational lensing of the cosmic microwave background (CMB) is a valuable cosmological signal that correlates to tracers of large-scale structure and acts as a important source of confusion for primordial B-mode polarization. State-of-the-art lensing reconstruction analyses use quadratic estimators, which are easily applicable to data. However, these estimators are known to be suboptimal, in particular for polarization, and large improvements are expected to be possible for high signal-to-noise polarization experiments. We develop a method and numerical code, LensIt, that is able to find efficiently the most probable lensing map, introducing no significant approximations to the lensed CMB likelihood, and applicable to beamed and masked data with inhomogeneous noise. It works by iteratively reconstructing the primordial unlensed CMB using a deflection estimate and its inverse, and removing residual lensing from these maps with quadratic estimator techniques. Roughly linear computational cost is maintained due to fast convergence of iterative searches, combined with the local nature of lensing. The method achieves the maximal improvement in signal to noise expected from analytical considerations on the unmasked parts of the sky. Delensing with this optimal map leads to forecast tensor-to-scalar ratio parameter errors improved by a factor similar or equal to 2 compared to the quadratic estimator in a CMB stage IV configuration.

引用

页数：19

共 47 条

[1] BICEP2/KECK ARRAY VIII: MEASUREMENT OF GRAVITATIONAL LENSING FROM LARGE-SCALE B-MODE POLARIZATION [J].

Ade, P. A. R. ;

Ahmed, Z. ;

Aikin, R. W. ;

Alexander, K. D. ;

Barkats, D. ;

Benton, S. J. ;

Bischoff, C. A. ;

Bock, J. J. ;

Bowens-Rubin, R. ;

Brevik, J. A. ;

Buder, I. ;

Bullock, E. ;

Buza, V. ;

Connors, J. ;

Crill, B. P. ;

Duband, L. ;

Dyorkin, C. ;

Filippini, J. P. ;

Fliescher, S. ;

Grayson, J. ;

Halpern, M. ;

Harrison, S. ;

Hildebrandt, S. R. ;

Hilton, G. C. ;

Hui, H. ;

Irwin, K. D. ;

Kang, J. ;

Karkare, K. S. ;

Karpel, E. ;

Kaufman, J. P. ;

Keating, B. G. ;

Kefeli, S. ;

Kernasoyskiy, S. A. ;

Kovac, J. M. ;

Kuo, C. L. ;

Leitch, E. M. ;

Lueker, M. ;

Megerian, K. G. ;

Namikawa, T. ;

Netterfield, C. B. ;

Nguyen, H. T. ;

O'Brient, R. ;

Ogburn, R. W. ;

Orlando, A. ;

Pryke, C. ;

Richter, S. ;

Schwarz, R. ;

Sheehy, C. D. ;

Staniszewski, Z. K. ;

Steinbach, B. .

ASTROPHYSICAL JOURNAL, 2016, 833 (02)

[2] Planck 2015 results XV. Gravitational lensing [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. ;

de Rosa, A. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[3] Planck 2013 results. XVIII. The gravitational lensing-infrared background correlation [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bethermin, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[4] Planck 2013 results. XVII. Gravitational lensing by large-scale structure [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, E. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Basak, S. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[5] Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum with the POLARBEAR Experiment [J].

Ade, P. A. R. ;

Akiba, Y. ;

Anthony, A. E. ;

Arnold, K. ;

Atlas, M. ;

Barron, D. ;

Boettger, D. ;

Borrill, J. ;

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. ;

Linder, E. ;

Leitch, E. M. ;

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. ;

Quealy, E. .

PHYSICAL REVIEW LETTERS, 2014, 113 (02)

[6] Planck intermediate results XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies [J].

Aghanim, N. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Benabed, K. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Burigana, C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Carron, J. ;

Chiang, H. C. ;

Colombo, L. P. L. ;

Comis, B. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

de Bernardis, P. ;

de Zotti, G. ;

Delabrouille, J. ;

Di Valentino, E. ;

Dickinson, C. ;

Diego, J. M. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Dusini, S. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Falgarone, E. ;

Fantaye, Y. ;

Finelli, F. ;

Forastieri, F. ;

Frailis, M. ;

Fraisse, A. A. .

ASTRONOMY & ASTROPHYSICS, 2016, 596

[7] BAYESIAN INFERENCE OF CMB GRAVITATIONAL LENSING [J].

Anderes, Ethan ;

Wandelt, Benjamin D. ;

Lavaux, Guilhem .

ASTROPHYSICAL JOURNAL, 2015, 808 (02)

[8] Mapping gravitational lensing of the CMB using local likelihoods [J].

Anderes, Ethan ;

Knox, Lloyd ;

van Engelen, Alexander .

PHYSICAL REVIEW D, 2011, 83 (04)

[9]

[Anonymous], ARXIV170104396 HERSC

[10]

[Anonymous], ARXIV161002743 CMB S

← 1 2 3 4 5 →