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Main Authors: Namikawa, T., Lonappan, A. I., Baccigalupi, C., Bartolo, N., Beck, D., Benabed, K., Challinor, A., Diego-Palazuelos, P., Errard, J., Farrens, S., Gruppuso, A., Krachmalnicoff, N., Migliaccio, M., Martínez-González, E., Pettorino, V., Piccirilli, G., Ruiz-Granda, M., 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 Haan, T., 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., 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., 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., Rubino-Martin, J., 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.
Format: Preprint
Published: 2023
Subjects:
Cosmology and Nongalactic Astrophysics
Online Access:https://arxiv.org/abs/2312.05194
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author Namikawa, T.
Lonappan, A. I.
Baccigalupi, C.
Bartolo, N.
Beck, D.
Benabed, K.
Challinor, A.
Diego-Palazuelos, P.
Errard, J.
Farrens, S.
Gruppuso, A.
Krachmalnicoff, N.
Migliaccio, M.
Martínez-González, E.
Pettorino, V.
Piccirilli, G.
Ruiz-Granda, M.
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 Haan, T.
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.
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.
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.
Rubino-Martin, J.
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.
author_facet Namikawa, T.
Lonappan, A. I.
Baccigalupi, C.
Bartolo, N.
Beck, D.
Benabed, K.
Challinor, A.
Diego-Palazuelos, P.
Errard, J.
Farrens, S.
Gruppuso, A.
Krachmalnicoff, N.
Migliaccio, M.
Martínez-González, E.
Pettorino, V.
Piccirilli, G.
Ruiz-Granda, M.
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 Haan, T.
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.
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.
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.
Rubino-Martin, J.
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.
contents We estimate the efficiency of mitigating the lensing $B$-mode polarization, the so-called delensing, for the $LiteBIRD$ experiment with multiple external data sets of lensing-mass tracers. The current best bound on the tensor-to-scalar ratio, $r$, is limited by lensing rather than Galactic foregrounds. Delensing will be a critical step to improve sensitivity to $r$ as measurements of $r$ become more and more limited by lensing. In this paper, we extend the analysis of the recent $LiteBIRD$ forecast paper to include multiple mass tracers, i.e., the CMB lensing maps from $LiteBIRD$ and CMB-S4-like experiment, cosmic infrared background, and galaxy number density from $Euclid$- and LSST-like survey. We find that multi-tracer delensing will further improve the constraint on $r$ by about $20\%$. In $LiteBIRD$, the residual Galactic foregrounds also significantly contribute to uncertainties of the $B$-modes, and delensing becomes more important if the residual foregrounds are further reduced by an improved component separation method.
format Preprint
id arxiv_https___arxiv_org_abs_2312_05194
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing
Namikawa, T.
Lonappan, A. I.
Baccigalupi, C.
Bartolo, N.
Beck, D.
Benabed, K.
Challinor, A.
Diego-Palazuelos, P.
Errard, J.
Farrens, S.
Gruppuso, A.
Krachmalnicoff, N.
Migliaccio, M.
Martínez-González, E.
Pettorino, V.
Piccirilli, G.
Ruiz-Granda, M.
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 Haan, T.
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.
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.
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.
Rubino-Martin, J.
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.
Cosmology and Nongalactic Astrophysics
We estimate the efficiency of mitigating the lensing $B$-mode polarization, the so-called delensing, for the $LiteBIRD$ experiment with multiple external data sets of lensing-mass tracers. The current best bound on the tensor-to-scalar ratio, $r$, is limited by lensing rather than Galactic foregrounds. Delensing will be a critical step to improve sensitivity to $r$ as measurements of $r$ become more and more limited by lensing. In this paper, we extend the analysis of the recent $LiteBIRD$ forecast paper to include multiple mass tracers, i.e., the CMB lensing maps from $LiteBIRD$ and CMB-S4-like experiment, cosmic infrared background, and galaxy number density from $Euclid$- and LSST-like survey. We find that multi-tracer delensing will further improve the constraint on $r$ by about $20\%$. In $LiteBIRD$, the residual Galactic foregrounds also significantly contribute to uncertainties of the $B$-modes, and delensing becomes more important if the residual foregrounds are further reduced by an improved component separation method.
title LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2312.05194

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