LiteBIRD Science Goals and Forecasts: A full-sky measurement of gravitational lensing of the CMB
- Lonappan, A. I.
- Namikawa, T.
- Piccirilli, G.
- Diego-Palazuelos, P.
- Ruiz-Granda, M.
- Migliaccio, M.
- Baccigalupi, C.
- Bartolo, N.
- Beck, D.
- Benabed, K.
- Challinor, A.
- Errard, J.
- Farrens, S.
- Gruppuso, A.
- Krachmalnicoff, N.
- Martínez-González, E.
- Pettorino, V.
- Sherwin, B.
- Starck, J.
- Vielva, P.
- Akizawa, R.
- Anand, A.
- Aumont, J.
- Aurlien, R.
- Azzoni, S.
- Ballardini, M.
- Banday, A. J.
- Barreiro, R. B.
- Bersanelli, M.
- Blinov, D.
- Bortolami, M.
- Brinckmann, T.
- Calabrese, E.
- Campeti, P.
- Carones, A.
- Carralot, F.
- Casas, F. J.
- Cheung, K.
- Clermont, L.
- Columbro, F.
- Conenna, G.
- Coppolecchia, A.
- Cuttaia, F.
- D'Alessandro, G.
- de Bernardis, P.
- De Petris, M.
- Della Torre, S.
- Di Giorgi, E.
- Eriksen, H. K.
- Finelli, F.
- Franceschet, C.
- Fuskeland, U.
- Galloni, G.
- Galloway, M.
- Georges, M.
- Gerbino, M.
- Gervasi, M.
- Génova-Santos, R. T.
- Ghigna, T.
- Giardiello, S.
- Gimeno-Amo, C.
- Gjerløw, E.
- Hazumi, M.
- Henrot-Versillé, S.
- Hergt, L. T.
- Hivon, E.
- Kohri, K.
- Komatsu, E.
- Lamagna, L.
- Lattanzi, M.
- Leloup, C.
- Lembo, M.
- López-Caniego, M.
- Luzzi, G.
- Macias-Perez, J.
- Maffei, B.
- Masi, S.
- Massa, M.
- Matarrese, S.
- Matsumura, T.
- Micheli, S.
- Moggi, A.
- Monelli, M.
- Montier, L.
- Morgante, G.
- Mot, B.
- Mousset, L.
- Nagata, R.
- Natoli, P.
- Novelli, A.
- Obata, I.
- Occhiuzzi, A.
- Pagano, L.
- Paiella, A.
- Paoletti, D.
- Pascual-Cisneros, G.
- Pavlidou, V.
- Piacentini, F.
- Pinchera, M.
- Pisano, G.
- Polenta, G.
- Puglisi, G.
- Remazeilles, M.
- Ritacco, A.
- Rizzieri, A.
- Sakurai, Y.
- Scott, D.
- Shiraishi, M.
- Signorelli, G.
- Stever, S. L.
- Takase, Y.
- Tanimura, H.
- Tartari, A.
- Tassis, K.
- Terenzi, L.
- Tristram, M.
- Vacher, L.
- van Tent, B.
- Wehus, I. K.
- Weymann-Despres, G.
- Zannoni, M.
- Zhou, Y.
DOIAbstract
We explore the capability of measuring lensing signals in LiteBIRD full-sky polarization maps. With a 30 arcmin beam width and an impressively low polarization noise of 2.16μK-arcmin, LiteBIRD will be able to measure the full-sky polarization of the cosmic microwave background (CMB) very precisely. This unique sensitivity also enables the reconstruction of a nearly full-sky lensing map using only polarization data, even considering its limited capability to capture small-scale CMB anisotropies. In this paper, we investigate the ability to construct a full-sky lensing measurement in the presence of Galactic foregrounds, finding that several possible biases from Galactic foregrounds should be negligible after component separation by harmonic-...
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