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Autori principali: Ruiz-Granda, M., Diego-Palazuelos, P., Gimeno-Amo, C., Vielva, P., Lonappan, A. I., Namikawa, T., Génova-Santos, R. T., Lembo, M., Nagata, R., Remazeilles, M., Adak, D., Allys, E., Anand, A., Aumont, J., Baccigalupi, C., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Basak, S., Bersanelli, M., Besnard, A., Blinov, D., Bortolami, M., Bouchet, F., Brinckmann, T., Cacciotti, F., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Cheung, K., Citran, M., Clermont, L., Columbro, F., Coppolecchia, A., de Bernardis, P., de Haan, T., de la Hoz, E., De Lucia, M., Della Torre, S., Di Giorgi, E., Eriksen, H. K., Finelli, F., Franceschet, C., Fuskeland, U., Galloni, G., Galloway, M., Gervasi, M., Ghigna, T., Giardiello, S., Gruppuso, A., Hazumi, M., Hergt, L. T., Hivon, E., Ichiki, K., Jiang, H., Jost, B., Kohri, K., Lamagna, L., Lattanzi, M., Leloup, C., Levrier, F., López-Caniego, M., Luzzi, G., Macias-Perez, J., Maranchery, V., Martínez-González, E., Masi, S., Matarrese, S., Matsumura, T., Micheli, S., Monelli, M., Montier, L., Morgante, G., Najafi, M., Novelli, A., Noviello, F., Obata, I., Occhiuzzi, A., Paiella, A., Paoletti, D., Pascual-Cisneros, G., Piacentini, F., Piccirilli, G., Polenta, G., Porcelli, L., Raffuzzi, N., Rizzieri, A., Rubiño-Martín, J. A., Sakurai, Y., Sanghavi, J., Scott, D., Shiraishi, M., Signorelli, G., Sullivan, R. M., Takase, Y., Terenzi, L., Tomasi, M., Tristram, M., Vacher, L., van Tent, B., Wehus, I. K., Weymann-Despres, G., Zhou, Y.
Natura: Preprint
Pubblicazione: 2025
Soggetti:
Cosmology and Nongalactic Astrophysics
Accesso online:https://arxiv.org/abs/2507.22618
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author Ruiz-Granda, M.
Diego-Palazuelos, P.
Gimeno-Amo, C.
Vielva, P.
Lonappan, A. I.
Namikawa, T.
Génova-Santos, R. T.
Lembo, M.
Nagata, R.
Remazeilles, M.
Adak, D.
Allys, E.
Anand, A.
Aumont, J.
Baccigalupi, C.
Ballardini, M.
Banday, A. J.
Barreiro, R. B.
Bartolo, N.
Basak, S.
Bersanelli, M.
Besnard, A.
Blinov, D.
Bortolami, M.
Bouchet, F.
Brinckmann, T.
Cacciotti, F.
Calabrese, E.
Campeti, P.
Carones, A.
Casas, F. J.
Cheung, K.
Citran, M.
Clermont, L.
Columbro, F.
Coppolecchia, A.
de Bernardis, P.
de Haan, T.
de la Hoz, E.
De Lucia, M.
Della Torre, S.
Di Giorgi, E.
Eriksen, H. K.
Finelli, F.
Franceschet, C.
Fuskeland, U.
Galloni, G.
Galloway, M.
Gervasi, M.
Ghigna, T.
Giardiello, S.
Gruppuso, A.
Hazumi, M.
Hergt, L. T.
Hivon, E.
Ichiki, K.
Jiang, H.
Jost, B.
Kohri, K.
Lamagna, L.
Lattanzi, M.
Leloup, C.
Levrier, F.
López-Caniego, M.
Luzzi, G.
Macias-Perez, J.
Maranchery, V.
Martínez-González, E.
Masi, S.
Matarrese, S.
Matsumura, T.
Micheli, S.
Monelli, M.
Montier, L.
Morgante, G.
Najafi, M.
Novelli, A.
Noviello, F.
Obata, I.
Occhiuzzi, A.
Paiella, A.
Paoletti, D.
Pascual-Cisneros, G.
Piacentini, F.
Piccirilli, G.
Polenta, G.
Porcelli, L.
Raffuzzi, N.
Rizzieri, A.
Rubiño-Martín, J. A.
Sakurai, Y.
Sanghavi, J.
Scott, D.
Shiraishi, M.
Signorelli, G.
Sullivan, R. M.
Takase, Y.
Terenzi, L.
Tomasi, M.
Tristram, M.
Vacher, L.
van Tent, B.
Wehus, I. K.
Weymann-Despres, G.
Zhou, Y.
author_facet Ruiz-Granda, M.
Diego-Palazuelos, P.
Gimeno-Amo, C.
Vielva, P.
Lonappan, A. I.
Namikawa, T.
Génova-Santos, R. T.
Lembo, M.
Nagata, R.
Remazeilles, M.
Adak, D.
Allys, E.
Anand, A.
Aumont, J.
Baccigalupi, C.
Ballardini, M.
Banday, A. J.
Barreiro, R. B.
Bartolo, N.
Basak, S.
Bersanelli, M.
Besnard, A.
Blinov, D.
Bortolami, M.
Bouchet, F.
Brinckmann, T.
Cacciotti, F.
Calabrese, E.
Campeti, P.
Carones, A.
Casas, F. J.
Cheung, K.
Citran, M.
Clermont, L.
Columbro, F.
Coppolecchia, A.
de Bernardis, P.
de Haan, T.
de la Hoz, E.
De Lucia, M.
Della Torre, S.
Di Giorgi, E.
Eriksen, H. K.
Finelli, F.
Franceschet, C.
Fuskeland, U.
Galloni, G.
Galloway, M.
Gervasi, M.
Ghigna, T.
Giardiello, S.
Gruppuso, A.
Hazumi, M.
Hergt, L. T.
Hivon, E.
Ichiki, K.
Jiang, H.
Jost, B.
Kohri, K.
Lamagna, L.
Lattanzi, M.
Leloup, C.
Levrier, F.
López-Caniego, M.
Luzzi, G.
Macias-Perez, J.
Maranchery, V.
Martínez-González, E.
Masi, S.
Matarrese, S.
Matsumura, T.
Micheli, S.
Monelli, M.
Montier, L.
Morgante, G.
Najafi, M.
Novelli, A.
Noviello, F.
Obata, I.
Occhiuzzi, A.
Paiella, A.
Paoletti, D.
Pascual-Cisneros, G.
Piacentini, F.
Piccirilli, G.
Polenta, G.
Porcelli, L.
Raffuzzi, N.
Rizzieri, A.
Rubiño-Martín, J. A.
Sakurai, Y.
Sanghavi, J.
Scott, D.
Shiraishi, M.
Signorelli, G.
Sullivan, R. M.
Takase, Y.
Terenzi, L.
Tomasi, M.
Tristram, M.
Vacher, L.
van Tent, B.
Wehus, I. K.
Weymann-Despres, G.
Zhou, Y.
contents Cosmic microwave background (CMB) photons are deflected by large-scale structure through gravitational lensing. This secondary effect introduces higher-order correlations in CMB anisotropies, which are used to reconstruct lensing deflections. This allows mapping of the integrated matter distribution along the line of sight, probing the growth of structure, and recovering an undistorted view of the last-scattering surface. Gravitational lensing has been measured by previous CMB experiments, with $\textit{Planck}$'s $42\,σ$ detection being the current best full-sky lensing map. We present an enhanced $\textit{LiteBIRD}$ lensing map by extending the CMB multipole range and including the minimum-variance estimation, leading to a $49$ to $58\,σ$ detection over $80\,\%$ of the sky, depending on the final complexity of polarized Galactic emission. The combination of $\textit{Planck}$ and $\textit{LiteBIRD}$ will be the best full-sky lensing map in the 2030s, providing a $72$ to $78\,σ$ detection over $80\,\%$ of the sky, almost doubling $\textit{Planck}$'s sensitivity. Finally, we explore different applications of the lensing map, including cosmological parameter estimation using a lensing-only likelihood and internal delensing, showing that the combination of both experiments leads to improved constraints. The combination of $\textit{Planck}$ + $\textit{LiteBIRD}$ will improve the $S_8$ constraint by a factor of 2 compared to $\textit{Planck}$, and $\textit{Planck}$ + $\textit{LiteBIRD}$ internal delensing will improve $\textit{LiteBIRD}$'s tensor-to-scalar ratio constraint by $6\,\%$. We have tested the robustness of our results against foreground models of different complexity, showing that improvements remains even for the most complex foregrounds.
format Preprint
id arxiv_https___arxiv_org_abs_2507_22618
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle LiteBIRD science goals and forecasts: improved full-sky reconstruction of the gravitational lensing potential through the combination of Planck and LiteBIRD data
Ruiz-Granda, M.
Diego-Palazuelos, P.
Gimeno-Amo, C.
Vielva, P.
Lonappan, A. I.
Namikawa, T.
Génova-Santos, R. T.
Lembo, M.
Nagata, R.
Remazeilles, M.
Adak, D.
Allys, E.
Anand, A.
Aumont, J.
Baccigalupi, C.
Ballardini, M.
Banday, A. J.
Barreiro, R. B.
Bartolo, N.
Basak, S.
Bersanelli, M.
Besnard, A.
Blinov, D.
Bortolami, M.
Bouchet, F.
Brinckmann, T.
Cacciotti, F.
Calabrese, E.
Campeti, P.
Carones, A.
Casas, F. J.
Cheung, K.
Citran, M.
Clermont, L.
Columbro, F.
Coppolecchia, A.
de Bernardis, P.
de Haan, T.
de la Hoz, E.
De Lucia, M.
Della Torre, S.
Di Giorgi, E.
Eriksen, H. K.
Finelli, F.
Franceschet, C.
Fuskeland, U.
Galloni, G.
Galloway, M.
Gervasi, M.
Ghigna, T.
Giardiello, S.
Gruppuso, A.
Hazumi, M.
Hergt, L. T.
Hivon, E.
Ichiki, K.
Jiang, H.
Jost, B.
Kohri, K.
Lamagna, L.
Lattanzi, M.
Leloup, C.
Levrier, F.
López-Caniego, M.
Luzzi, G.
Macias-Perez, J.
Maranchery, V.
Martínez-González, E.
Masi, S.
Matarrese, S.
Matsumura, T.
Micheli, S.
Monelli, M.
Montier, L.
Morgante, G.
Najafi, M.
Novelli, A.
Noviello, F.
Obata, I.
Occhiuzzi, A.
Paiella, A.
Paoletti, D.
Pascual-Cisneros, G.
Piacentini, F.
Piccirilli, G.
Polenta, G.
Porcelli, L.
Raffuzzi, N.
Rizzieri, A.
Rubiño-Martín, J. A.
Sakurai, Y.
Sanghavi, J.
Scott, D.
Shiraishi, M.
Signorelli, G.
Sullivan, R. M.
Takase, Y.
Terenzi, L.
Tomasi, M.
Tristram, M.
Vacher, L.
van Tent, B.
Wehus, I. K.
Weymann-Despres, G.
Zhou, Y.
Cosmology and Nongalactic Astrophysics
Cosmic microwave background (CMB) photons are deflected by large-scale structure through gravitational lensing. This secondary effect introduces higher-order correlations in CMB anisotropies, which are used to reconstruct lensing deflections. This allows mapping of the integrated matter distribution along the line of sight, probing the growth of structure, and recovering an undistorted view of the last-scattering surface. Gravitational lensing has been measured by previous CMB experiments, with $\textit{Planck}$'s $42\,σ$ detection being the current best full-sky lensing map. We present an enhanced $\textit{LiteBIRD}$ lensing map by extending the CMB multipole range and including the minimum-variance estimation, leading to a $49$ to $58\,σ$ detection over $80\,\%$ of the sky, depending on the final complexity of polarized Galactic emission. The combination of $\textit{Planck}$ and $\textit{LiteBIRD}$ will be the best full-sky lensing map in the 2030s, providing a $72$ to $78\,σ$ detection over $80\,\%$ of the sky, almost doubling $\textit{Planck}$'s sensitivity. Finally, we explore different applications of the lensing map, including cosmological parameter estimation using a lensing-only likelihood and internal delensing, showing that the combination of both experiments leads to improved constraints. The combination of $\textit{Planck}$ + $\textit{LiteBIRD}$ will improve the $S_8$ constraint by a factor of 2 compared to $\textit{Planck}$, and $\textit{Planck}$ + $\textit{LiteBIRD}$ internal delensing will improve $\textit{LiteBIRD}$'s tensor-to-scalar ratio constraint by $6\,\%$. We have tested the robustness of our results against foreground models of different complexity, showing that improvements remains even for the most complex foregrounds.
title LiteBIRD science goals and forecasts: improved full-sky reconstruction of the gravitational lensing potential through the combination of Planck and LiteBIRD data
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2507.22618

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