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1. Requirements on the gain calibration for LiteBIRD polarisation data with blind component separation

Author

Carralot, F., Carones, A., Krachmalnicoff, N., Ghigna, T., Novelli, A., Pagano, L., Piacentini, F., Baccigalupi, C., Adak, D., Anand, A., Aumont, J., Azzoni, S., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Basak, S., Basyrov, A., Bersanelli, M., Bortolami, M., Brinckmann, T., Cacciotti, F., Campeti, P., Carinos, E., Casas, F. J., Cheung, K., Clermont, L., Columbro, F., Conenna, G., Coppi, G., Coppolecchia, A., Cuttaia, F., de Bernardis, P., De Lucia, M., Della Torre, S., Di Giorgi, E., Diego-Palazuelos, P., Essinger-Hileman, T., Ferreira, E., Finelli, F., Franceschet, C., Galloni, G., Galloway, M., Gervasi, M., Génova-Santos, R. T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., Gruppuso, A., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Hivon, E., Ishino, H., Jost, B., Kohri, K., Lamagna, L., Leloup, C., Lembo, M., Levrier, F., Lonappan, A. I., López-Caniego, M., Luzzi, G., Macias-Perez, J., Martínez-González, E., Masi, S., Matarrese, S., Matsumura, T., Micheli, S., Monelli, M., Montier, L., Morgante, G., Mot, B., Mousset, L., Nagano, Y., Nagata, R., Namikawa, T., Natoli, P., Obata, I., Occhiuzzi, A., Paiella, A., Paoletti, D., Pascual-Cisneros, G., Patanchon, G., Pavlidou, V., Pisano, G., Polenta, G., Porcelli, L., Puglisi, G., Raffuzzi, N., Remazeilles, M., Rubiño-Martín, J. A., Ruiz-Granda, M., Sanghavi, J., Scott, D., Shiraishi, M., Sullivan, R. M., Takase, Y., Tassis, K., Terenzi, L., Tomasi, M., Tristram, M., Vacher, L., van Tent, B., Vielva, P., Weymann-Despres, G., Wollack, E. J., Zannoni, M., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Future cosmic microwave background (CMB) experiments are primarily targeting a detection of the primordial $B$-mode polarisation. The faintness of this signal requires exquisite control of systematic effects which may bias the measurements. In this work, we derive requirements on the relative calibration accuracy of the overall polarisation gain ($\Delta g_\nu$) for LiteBIRD experiment, through the application of the blind Needlet Internal Linear Combination (NILC) foreground-cleaning method. We find that minimum variance techniques, as NILC, are less affected by gain calibration uncertainties than a parametric approach, which requires a proper modelling of these instrumental effects. The tightest constraints are obtained for frequency channels where the CMB signal is relatively brighter (166 GHz channel, $\Delta {g}_\nu \approx 0.16 \%$), while, with a parametric approach, the strictest requirements were on foreground-dominated channels. We then propagate gain calibration uncertainties, corresponding to the derived requirements, into all frequency channels simultaneously. We find that the overall impact on the estimated $r$ is lower than the required budget for LiteBIRD by almost a factor $5$. The adopted procedure to derive requirements assumes a simple Galactic model. We therefore assess the robustness of obtained results against more realistic scenarios by injecting the gain calibration uncertainties, according to the requirements, into LiteBIRD simulated maps and assuming intermediate- and high-complexity sky models. In this case, we employ the so-called Multi-Clustering NILC (MC-NILC) foreground-cleaning pipeline and obtain that the impact of gain calibration uncertainties on $r$ is lower than the LiteBIRD gain systematics budget for the intermediate-complexity sky model. For the high-complexity case, instead, it would be necessary to tighten the requirements by a factor $1.8$., Comment: 29 pages, 11 figures

Published
2024

2. Multi-dimensional optimisation of the scanning strategy for the LiteBIRD space mission

Author

Takase, Y., Vacher, L., Ishino, H., Patanchon, G., Montier, L., Stever, S. L., Ishizaka, K., Nagano, Y., Wang, W., Aumont, J., Aizawa, K., Anand, A., Baccigalupi, C., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Basak, S., Bersanelli, M., Bortolami, M., Brinckmann, T., Calabrese, E., Campeti, P., Carinos, E., Carones, A., Casas, F. J., Cheung, K., Clermont, L., Columbro, F., Coppolecchia, A., Cuttaia, F., de Bernardis, P., de Haan, T., de la Hoz, E., Della Torre, S., Diego-Palazuelos, P., D'Alessandro, G., Eriksen, H. K., Errard, J., Finelli, F., Fuskeland, U., Galloni, G., Galloway, M., Gervasi, M., Ghigna, T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., González, R. González, Gruppuso, A., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Ikuma, K., Kohri, K., Lamagna, L., Lattanzi, M., Leloup, C., Lembo, M., Levrier, F., Lonappan, A. I., López-Caniego, M., Luzzi, G., Maffei, B., Martínez-González, E., Masi, S., Matarrese, S., Matsuda, F. T., Matsumura, T., Micheli, S., Migliaccio, M., Monelli, M., Morgante, G., Mot, B., Nagata, R., Namikawa, T., Novelli, A., Odagiri, K., Oguri, S., Omae, R., Pagano, L., Paoletti, D., Piacentini, F., Pinchera, M., Polenta, G., Porcelli, L., Raffuzzi, N., Remazeilles, M., Ritacco, A., Ruiz-Granda, M., Sakurai, Y., Scott, D., Sekimoto, Y., Shiraishi, M., Signorelli, G., Sullivan, R. M., Takakura, H., Terenzi, L., Tomasi, M., Tristram, M., van Tent, B., Vielva, P., Wehus, I. K., Westbrook, B., Weymann-Despres, G., Wollack, E. J., Zannoni, M., and Zhou, Y.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Large angular scale surveys in the absence of atmosphere are essential for measuring the primordial $B$-mode power spectrum of the Cosmic Microwave Background (CMB). Since this proposed measurement is about three to four orders of magnitude fainter than the temperature anisotropies of the CMB, in-flight calibration of the instruments and active suppression of systematic effects are crucial. We investigate the effect of changing the parameters of the scanning strategy on the in-flight calibration effectiveness, the suppression of the systematic effects themselves, and the ability to distinguish systematic effects by null-tests. Next-generation missions such as LiteBIRD, modulated by a Half-Wave Plate (HWP), will be able to observe polarisation using a single detector, eliminating the need to combine several detectors to measure polarisation, as done in many previous experiments and hence avoiding the consequent systematic effects. While the HWP is expected to suppress many systematic effects, some of them will remain. We use an analytical approach to comprehensively address the mitigation of these systematic effects and identify the characteristics of scanning strategies that are the most effective for implementing a variety of calibration strategies in the multi-dimensional space of common spacecraft scan parameters. We also present Falcons, a fast spacecraft scanning simulator that we developed to investigate this scanning parameter space.

Published
2024

3. LiteBIRD Science Goals and Forecasts. Mapping the Hot Gas in the Universe

Author

Remazeilles, M., Douspis, M., Rubiño-Martín, J. A., Banday, A. J., Chluba, J., de Bernardis, P., De Petris, M., Hernández-Monteagudo, C., Luzzi, G., Macias-Perez, J., Masi, S., Namikawa, T., Salvati, L., Tanimura, H., Aizawa, K., Anand, A., Aumont, J., Baccigalupi, C., Ballardini, M., Barreiro, R. B., Bartolo, N., Basak, S., Bersanelli, M., Blinov, D., Bortolami, M., Brinckmann, T., Calabrese, E., Campeti, P., Carinos, E., Carones, A., Casas, F. J., Cheung, K., Clermont, L., Columbro, F., Coppolecchia, A., Cuttaia, F., de Haan, T., de la Hoz, E., Della Torre, S., Diego-Palazuelos, P., D'Alessandro, G., Eriksen, H. K., Finelli, F., Fuskeland, U., Galloni, G., Galloway, M., Gervasi, M., Génova-Santos, R. T., Ghigna, T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., González, R. González, Gruppuso, A., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Herranz, D., Kohri, K., Komatsu, E., Lamagna, L., Lattanzi, M., Leloup, C., Levrier, F., Lonappan, A. I., López-Caniego, M., Maffei, B., Martínez-González, E., Matarrese, S., Matsumura, T., Micheli, S., Migliaccio, M., Monelli, M., Montier, L., Morgante, G., Nagano, Y., Nagata, R., Novelli, A., Omae, R., Pagano, L., Paoletti, D., Pavlidou, V., Piacentini, F., Pinchera, M., Polenta, G., Porcelli, L., Ritacco, A., Ruiz-Granda, M., Sakurai, Y., Scott, D., Shiraishi, M., Stever, S. L., Sullivan, R. M., Takase, Y., Tassis, K., Terenzi, L., Tomasi, M., Tristram, M., Vacher, L., van Tent, B., Vielva, P., Wehus, I. K., Westbrook, B., Weymann-Despres, G., Wollack, E. J., Zannoni, M., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We assess the capabilities of the LiteBIRD mission to map the hot gas distribution in the Universe through the thermal Sunyaev-Zeldovich (SZ) effect. Our analysis relies on comprehensive simulations incorporating various sources of Galactic and extragalactic foreground emission, while accounting for specific instrumental characteristics of LiteBIRD, such as detector sensitivities, frequency-dependent beam convolution, inhomogeneous sky scanning, and $1/f$ noise. We implement a tailored component-separation pipeline to map the thermal SZ Compton $y$-parameter over 98% of the sky. Despite lower angular resolution for galaxy cluster science, LiteBIRD provides full-sky coverage and, compared to the Planck satellite, enhanced sensitivity, as well as more frequency bands to enable the construction of an all-sky $y$-map, with reduced foreground contamination at large and intermediate angular scales. By combining LiteBIRD and Planck channels in the component-separation pipeline, we obtain an optimal $y$-map that leverages the advantages of both experiments, with the higher angular resolution of the Planck channels enabling the recovery of compact clusters beyond the LiteBIRD beam limitations, and the numerous sensitive LiteBIRD channels further mitigating foregrounds. The added value of LiteBIRD is highlighted through the examination of maps, power spectra, and one-point statistics of the various sky components. After component separation, the $1/f$ noise from LiteBIRD is effectively mitigated below the thermal SZ signal at all multipoles. Cosmological constraints on $S_8=\sigma_8\left(\Omega_{\rm m}/0.3\right)^{0.5}$ obtained from the LiteBIRD-Planck combined $y$-map power spectrum exhibits a 15% reduction in uncertainty compared to constraints from Planck alone. This improvement can be attributed to the increased portion of uncontaminated sky available in the LiteBIRD-Planck combined $y$-map., Comment: 38 pages, 13 figures, abstract shortened. Updated to match version accepted by JCAP

Published
2024

4. The LiteBIRD mission to explore cosmic inflation

Author

Ghigna, T., Adler, A., Aizawa, K., Akamatsu, H., Akizawa, R., Allys, E., Anand, A., Aumont, J., Austermann, J., Azzoni, S., Baccigalupi, C., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Basak, S., Basyrov, A., Beckman, S., Bersanelli, M., Bortolami, M., Bouchet, F., Brinckmann, T., Campeti, P., Carinos, E., Carones, A., Casas, F. J., Cheung, K., Chinone, Y., Clermont, L., Columbro, F., Coppolecchia, A., Curtis, D., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Monache, G. Delle, Di Giorgi, E., Dickinson, C., Diego-Palazuelos, P., García, J. J. Díaz, Dobbs, M., Dotani, T., D'Alessandro, G., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farias, N., Ferreira, E., Franceschet, C., Fuskeland, U., Galloni, G., Galloway, M., Ganga, K., Gerbino, M., Gervasi, M., Génova-Santos, R. T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., González, R. González, Grandsire, L., Gruppuso, A., Halverson, N. W., Hargrave, P., Harper, S. E., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Herranz, D., Hivon, E., Hlozek, R. A., Hoang, T. D., Hubmayr, J., Ichiki, K., Ikuma, K., Ishino, H., Jaehnig, G., Jost, B., Kohri, K., Konishi, K., Lamagna, L., Lattanzi, M., Leloup, C., Levrier, F., Lonappan, A. I., Luzzi, G., Macias-Perez, J., Maffei, B., Marchitelli, E., Martínez-González, E., Masi, S., Matarrese, S., Matsumura, T., Micheli, S., Migliaccio, M., Monelli, M., Montier, L., Morgante, G., Mousset, L., Nagano, Y., Nagata, R., Natoli, P., Novelli, A., Noviello, F., Obata, I., Occhiuzzi, A., Odagiri, K., Omae, R., Pagano, L., Paiella, A., Paoletti, D., Pascual-Cisneros, G., Patanchon, G., Pavlidou, V., Piacentini, F., Piat, M., Piccirilli, G., Pinchera, M., Pisano, G., Porcelli, L., Raffuzzi, N., Raum, C., Remazeilles, M., Ritacco, A., Rubino-Martin, J., Ruiz-Granda, M., Sakurai, Y., Savini, G., Scott, D., Sekimoto, Y., Shiraishi, M., Signorelli, G., Stever, S. L., Sullivan, R. M., Suzuki, A., Takaku, R., Takakura, H., Takakura, S., Tartari, Y. Takase. A., Tassis, K., Thompson, K. L., Tomasi, M., Tristram, M., Tucker, C., Vacher, L., van Tent, B., Vielva, P., Watanuki, K., Wehus, I. K., Westbrook, B., Weymann-Despres, G., Winter, B., Wollack, E. J., Zacchei, A., Zannoni, M., Zhou, Y., and Collaboration, the LiteBIRD

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Instrumentation and Detectors
Abstract

LiteBIRD, the next-generation cosmic microwave background (CMB) experiment, aims for a launch in Japan's fiscal year 2032, marking a major advancement in the exploration of primordial cosmology and fundamental physics. Orbiting the Sun-Earth Lagrangian point L2, this JAXA-led strategic L-class mission will conduct a comprehensive mapping of the CMB polarization across the entire sky. During its 3-year mission, LiteBIRD will employ three telescopes within 15 unique frequency bands (ranging from 34 through 448 GHz), targeting a sensitivity of 2.2\,$\mu$K-arcmin and a resolution of 0.5$^\circ$ at 100\,GHz. Its primary goal is to measure the tensor-to-scalar ratio $r$ with an uncertainty $\delta r = 0.001$, including systematic errors and margin. If $r \geq 0.01$, LiteBIRD expects to achieve a $>5\sigma$ detection in the $\ell=$2-10 and $\ell=$11-200 ranges separately, providing crucial insight into the early Universe. We describe LiteBIRD's scientific objectives, the application of systems engineering to mission requirements, the anticipated scientific impact, and the operations and scanning strategies vital to minimizing systematic effects. We will also highlight LiteBIRD's synergies with concurrent CMB projects., Comment: 23 pages, 9 figures, 1 table, SPIE Astronomical Telescopes + Instrumentation 2024

Published
2024

5. LiteBIRD Science Goals and Forecasts: Primordial Magnetic Fields

Author

Paoletti, D., Rubino-Martin, J., Shiraishi, M., Molinari, D., Chluba, J., Finelli, F., Baccigalupi, C., Errard, J., Gruppuso, A., Lonappan, A. I., Tartari, A., Allys, E., Anand, A., Aumont, J., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Bersanelli, M., Bortolami, M., Brinckmann, T., Calabrese, E., Campeti, P., Carones, A., Casas, F. J., Cheung, K., Clermont, L., Columbro, F., Conenna, G., Coppolecchia, A., Cuttaia, F., D'Alessandro, G., de Bernardis, P., Della Torre, S., Diego-Palazuelos, P., Eriksen, H. K., Fuskeland, U., Galloni, G., Galloway, M., Gerbino, M., Gervasi, M., Ghigna, T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., Grupp, F., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Hivon, E., Ichiki, K., Ishino, H., Kohri, K., Komatsu, E., Krachmalnicoff, N., Lamagna, L., Lattanzi, M., Lembo, M., Levrier, F., López-Caniego, M., Luzzi, G., Martínez-González, E., Masi, S., Matarrese, S., Micheli, S., Migliaccio, M., Monelli, M., Montier, L., Morgante, G., Mousset, L., Nagata, R., Namikawa, T., Natoli, P., Novelli, A., Obata, I., Occhiuzzi, A., Odagiri, K., Pagano, L., Paiella, A., Pascual-Cisneros, G., Piacentini, F., Piccirilli, G., Remazeilles, M., Ritacco, A., Ruiz-Granda, M., Sakurai, Y., Scott, D., Stever, S. L., Sullivan, R. M., Takase, Y., Tassis, K., Terenzi, L., Tristram, M., Vacher, L., van Tent, B., Vielva, P., Wehus, I. K., Weymann-Despres, G., Zannoni, M., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present detailed forecasts for the constraints on primordial magnetic fields (PMFs) that will be obtained with the LiteBIRD satellite. The constraints are driven by the effects of PMFs on the CMB anisotropies: the gravitational effects of magnetically-induced perturbations; the effects on the thermal and ionization history of the Universe; the Faraday rotation imprint on the CMB polarization; and the non-Gaussianities induced in polarization anisotropies. LiteBIRD represents a sensitive probe for PMFs and by exploiting all the physical effects, it will be able to improve the current limit coming from Planck. In particular, thanks to its accurate $B$-mode polarization measurement, LiteBIRD will improve the constraints on infrared configurations for the gravitational effect, giving $B_{\rm 1\,Mpc}^{n_{\rm B} =-2.9} < 0.8$ nG at 95% C.L., potentially opening the possibility to detect nanogauss fields with high significance. We also observe a significant improvement in the limits when marginalized over the spectral index, $B_{1\,{\rm Mpc}}^{\rm marg}< 2.2$ nG at 95% C.L. From the thermal history effect, which relies mainly on $E$-mode polarization data, we obtain a significant improvement for all PMF configurations, with the marginalized case, $\sqrt{\langle B^2\rangle}^{\rm marg}<0.50$ nG at 95% C.L. Faraday rotation constraints will take advantage of the wide frequency coverage of LiteBIRD and the high sensitivity in $B$ modes, improving the limits by orders of magnitude with respect to current results, $B_{1\,{\rm Mpc}}^{n_{\rm B} =-2.9} < 3.2$ nG at 95% C.L. Finally, non-Gaussianities of the $B$-mode polarization can probe PMFs at the level of 1 nG, again significantly improving the current bounds from Planck. Altogether our forecasts represent a broad collection of complementary probes, providing conservative limits on PMF characteristics that will be achieved with LiteBIRD., Comment: 51 pages, 24 figures, abstract shortened

Published
2024

6. Impact of beam far side-lobe knowledge in the presence of foregrounds for LiteBIRD

Author

Leloup, C., Patanchon, G., Errard, J., Franceschet, C., Gudmundsson, J. E., Henrot-Versillé, S., Imada, H., Ishino, H., Matsumura, T., Puglisi, G., Wang, W., Adler, A., Aumont, J., Aurlien, R., Baccigalupi, C., Ballardini, M., Banday, A. J., Barreiro, R. B., Bartolo, N., Basyrov, A., Bersanelli, M., Blinov, D., Bortolami, M., Brinckmann, T., 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., Diego-Palazuelos, P., Eriksen, H. K., Finelli, F., 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., Gruppuso, A., Hazumi, M., Hergt, L. T., Herranz, D., Hivon, E., Hoang, T. D., Jost, B., Kohri, K., Krachmalnicoff, N., Lee, A. T., Lembo, M., Levrier, F., Lonappan, A. I., López-Caniego, M., Macias-Perez, J., Martínez-González, E., Masi, S., Matarrese, S., Micheli, S., Monelli, M., Montier, L., Morgante, G., Mot, B., Mousset, L., Namikawa, T., Natoli, P., Novelli, A., Noviello, F., Obata, I., Odagiri, K., Pagano, L., Paiella, A., Paoletti, D., Pascual-Cisneros, G., Pavlidou, V., Piacentini, F., Piccirilli, G., Pisano, G., Polenta, G., Raffuzzi, N., Remazeilles, M., Ritacco, A., Rizzieri, A., Ruiz-Granda, M., Sakurai, Y., Shiraishi, M., Stever, S. L., Takase, Y., Tassis, K., Terenzi, L., Thompson, K. L., Tristram, M., Vacher, L., Vielva, P., Wehus, I. K., Weymann-Despres, G., Zannoni, M., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a study of the impact of an uncertainty in the beam far side-lobe knowledge on the measurement of the Cosmic Microwave Background $B$-mode signal at large scale. It is expected to be one of the main source of systematic effects in future CMB observations. Because it is crucial for all-sky survey missions to take into account the interplays between beam systematic effects and all the data analysis steps, the primary goal of this paper is to provide the methodology to carry out the end-to-end study of their effect for a space-borne CMB polarization experiment, up to the cosmological results in the form of a bias $\delta r$ on the tensor-to-scalar ratio $r$. LiteBIRD is dedicated to target the measurement of CMB primordial $B$ modes by reaching a sensitivity of $\sigma \left( r \right) \leq 10^{-3}$ assuming $r=0$. As a demonstration of our framework, we derive the relationship between the knowledge of the beam far side-lobes and the tentatively allocated error budget under given assumptions on design, simulation and component separation method. We assume no mitigation of the far side-lobes effect at any stage of the analysis pipeline. We show that $\delta r$ is mostly due to the integrated fractional power difference between the estimated beams and the true beams in the far side-lobes region, with little dependence on the actual shape of the beams, for low enough $\delta r$. Under our set of assumptions, in particular considering the specific foreground cleaning method we used, we find that the integrated fractional power in the far side-lobes should be known at a level as tight as $\sim 10^{-4}$, to achieve the required limit on the bias $\delta r < 1.9 \times 10^{-5}$. The framework and tools developed for this study can be easily adapted to provide requirements under different design, data analysis frameworks and for other future space-borne experiments beyond LiteBIRD.

Published
2023

7. LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing

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., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

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., Comment: 21 pages, 7 figures

Published
2023
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8. LiteBIRD Science Goals and Forecasts: A full-sky measurement of gravitational lensing of the CMB

Author

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., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

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 $2.16\,\mu$K-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-space internal linear combination. We find that the signal-to-noise ratio of the lensing is approximately $40$ using only polarization data measured over $90\%$ of the sky. This achievement is comparable to $Planck$'s recent lensing measurement with both temperature and polarization and represents a four-fold improvement over $Planck$'s polarization-only lensing measurement. The $LiteBIRD$ lensing map will complement the $Planck$ lensing map and provide several opportunities for cross-correlation science, especially in the northern hemisphere.

Published
2023
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9. LiteBIRD Science Goals and Forecasts. A Case Study of the Origin of Primordial Gravitational Waves using Large-Scale CMB Polarization

Author

Campeti, P., Komatsu, E., Baccigalupi, C., Ballardini, M., Bartolo, N., Carones, A., Errard, J., Finelli, F., Flauger, R., Galli, S., Galloni, G., Giardiello, S., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Kohri, K., Leloup, C., Lesgourgues, J., Macias-Perez, J., Martínez-González, E., Matarrese, S., Matsumura, T., Montier, L., Namikawa, T., Paoletti, D., Poletti, D., Remazeilles, M., Shiraishi, M., van Tent, B., Tristram, M., Vacher, L., Vittorio, N., Weymann-Despres, G., Anand, A., Aumont, J., Aurlien, R., Banday, A. J., Barreiro, R. B., Basyrov, A., Bersanelli, M., Blinov, D., Bortolami, M., Brinckmann, T., Calabrese, E., Carralot, F., Casas, F. J., 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., Diego-Palazuelos, P., Eriksen, H. K., Franceschet, C., Fuskeland, U., Galloway, M., Georges, M., Gerbino, M., Gervasi, M., Ghigna, T., Gimeno-Amo, C., Gjerløw, E., Gruppuso, A., Gudmundsson, J., Krachmalnicoff, N., Lamagna, L., Lattanzi, M., Lembo, M., Lonappan, A. I., Masi, S., Massa, M., Micheli, S., Moggi, A., Monelli, M., Morgante, G., Mot, B., Mousset, L., Nagata, R., Natoli, P., Novelli, A., Obata, I., Pagano, L., Paiella, A., Pavlidou, V., Piacentini, F., Pinchera, M., Pisano, G., Puglisi, G., Raffuzzi, N., Ritacco, A., Rizzieri, A., Ruiz-Granda, M., Savini, G., Scott, D., Signorelli, G., Stever, S. L., Stutzer, N., Sullivan, R. M., Tartari, A., Tassis, K., Terenzi, L., Thompson, K. L., Vielva, P., Wehus, I. K., and Zhou, Y.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology
Abstract

We study the possibility of using the $LiteBIRD$ satellite $B$-mode survey to constrain models of inflation producing specific features in CMB angular power spectra. We explore a particular model example, i.e. spectator axion-SU(2) gauge field inflation. This model can source parity-violating gravitational waves from the amplification of gauge field fluctuations driven by a pseudoscalar "axionlike" field, rolling for a few e-folds during inflation. The sourced gravitational waves can exceed the vacuum contribution at reionization bump scales by about an order of magnitude and can be comparable to the vacuum contribution at recombination bump scales. We argue that a satellite mission with full sky coverage and access to the reionization bump scales is necessary to understand the origin of the primordial gravitational wave signal and distinguish among two production mechanisms: quantum vacuum fluctuations of spacetime and matter sources during inflation. We present the expected constraints on model parameters from $LiteBIRD$ satellite simulations, which complement and expand previous studies in the literature. We find that $LiteBIRD$ will be able to exclude with high significance standard single-field slow-roll models, such as the Starobinsky model, if the true model is the axion-SU(2) model with a feature at CMB scales. We further investigate the possibility of using the parity-violating signature of the model, such as the $TB$ and $EB$ angular power spectra, to disentangle it from the standard single-field slow-roll scenario. We find that most of the discriminating power of $LiteBIRD$ will reside in $BB$ angular power spectra rather than in $TB$ and $EB$ correlations., Comment: 22 pages, 13 figures. Submitted to JCAP

Published
2023

10. Constraining CMB physical processes using Planck 2018 data

Author

Ruiz-Granda, M. and Vielva, P.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

This paper aims to perform a phenomenological parametrisation of the standard cosmological model, $\Lambda$CDM, to weigh the different physical processes that define the pattern of the angular power spectra of the Cosmic Microwave Background (CMB) anisotropies. We use six phenomenological amplitudes to account for the Sachs-Wolfe, early and late Integrated Sachs-Wolfe, polarization contribution, Doppler and lensing effects. To do so, we have adapted the CLASS Boltzmann code and used the Markov Chain Monte Carlo (MCMC) sampler of Cobaya to explore the Planck 2018 likelihood to constrain different combinations of cosmological and phenomenological parameters. Observing deviations of the mean values of the phenomenological amplitudes from the predictions of the $\Lambda$CDM model could be useful to resolve existing cosmological tensions. For the first time, a comprehensive analysis of the physical processes of the CMB has been performed using the Planck 2018 temperature, polarization and lensing power spectra. In a previous work, the phenomenological amplitudes were constrained using only the TT data, however, by including the polarization and lensing data we find that the constraints on these physical contributions are tighter. In addition, some degeneracies that appear only when considering TT data are completely broken by taking into account all Planck 2018 data. Consequently, models with more than three phenomenological amplitudes can be studied, which is prohibitive when only the temperature power spectrum is used. The results presented in this paper show that the Planck experiment can constrain all phenomenological amplitudes except the late Integrated Sachs-Wolfe effect. No inconsistencies were found with the $\Lambda$CDM model, and the largest improvements were obtained for the models that include the lensing parameter, $A_L$., Comment: 24 pages, 10 figures, accepted for publication on JCAP

Published
2022
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11. LiteBIRD science goals and forecasts: improving sensitivity to inflationary gravitational waves with multitracer delensing

Author

Namikawa, T, Lonappan, A, 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, Barreiro, R, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Campeti, P, Carones, A, Carralot, F, Casas, F, 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, 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, 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, Takase, Y, Tanimura, H, Tartari, A, Tassis, K, Terenzi, L, Tristram, M, Vacher, L, van Tent, B, Wehus, I, Weymann-Despres, G, Zannoni, M, Zhou, Y, Namikawa T., Lonappan A., 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., Barreiro R., Bersanelli M., Blinov D., Bortolami M., Brinckmann T., Calabrese E., Campeti P., Carones A., Carralot F., Casas F., 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., 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., 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., Namikawa, T, Lonappan, A, 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, Barreiro, R, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Campeti, P, Carones, A, Carralot, F, Casas, F, 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, 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, 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, Takase, Y, Tanimura, H, Tartari, A, Tassis, K, Terenzi, L, Tristram, M, Vacher, L, van Tent, B, Wehus, I, Weymann-Despres, G, Zannoni, M, Zhou, Y, Namikawa T., Lonappan A., 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., Barreiro R., Bersanelli M., Blinov D., Bortolami M., Brinckmann T., Calabrese E., Campeti P., Carones A., Carralot F., Casas F., 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., 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., 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., and Zhou Y.

Abstract

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.

Published
2024

12. LiteBIRD science goals and forecasts: a full-sky measurement of gravitational lensing of the CMB

Author

Lonappan, A, 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, Barreiro, R, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Campeti, P, Carones, A, Carralot, F, Casas, F, 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, Finelli, F, Franceschet, C, Fuskeland, U, Galloni, G, Galloway, M, Georges, M, Gerbino, M, Gervasi, M, Génova-Santos, R, Ghigna, T, Giardiello, S, Gimeno-Amo, C, Gjerløw, E, Hazumi, M, Henrot-Versillé, S, Hergt, L, 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, Takase, Y, Tanimura, H, Tartari, A, Tassis, K, Terenzi, L, Tristram, M, Vacher, L, van Tent, B, Wehus, I, Weymann-Despres, G, Zannoni, M, Zhou, Y, 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., PolentaG., Puglisi G., RemazeillesM., 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., Lonappan, A, 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, Barreiro, R, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Campeti, P, Carones, A, Carralot, F, Casas, F, 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, Finelli, F, Franceschet, C, Fuskeland, U, Galloni, G, Galloway, M, Georges, M, Gerbino, M, Gervasi, M, Génova-Santos, R, Ghigna, T, Giardiello, S, Gimeno-Amo, C, Gjerløw, E, Hazumi, M, Henrot-Versillé, S, Hergt, L, 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, Takase, Y, Tanimura, H, Tartari, A, Tassis, K, Terenzi, L, Tristram, M, Vacher, L, van Tent, B, Wehus, I, Weymann-Despres, G, Zannoni, M, Zhou, Y, 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., PolentaG., Puglisi G., RemazeillesM., 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., and Zhou Y.

Abstract

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 2.16 ìK-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-space internal linear combination. We find that the signal-to-noise ratio of the lensing is approximately 40 using only polarization data measured over 80% of the sky. This achievement is comparable to Planck's recent lensing measurement with both temperature and polarization and represents a four-fold improvement over Planck's polarization-only lensing measurement. The LiteBIRD lensing map will complement the Planck lensing map and provide several opportunities for cross-correlation science, especially in the northern hemisphere.

Published
2024

13. LiteBIRD science goals and forecasts. A case study of the origin of primordial gravitational waves using large-scale CMB polarization

Author

Campeti, P, Komatsu, E, Baccigalupi, C, Ballardini, M, Bartolo, N, Carones, A, Errard, J, Finelli, F, Flauger, R, Galli, S, Galloni, G, Giardiello, S, Hazumi, M, Henrot-Versillé, S, Hergt, L, Kohri, K, Leloup, C, Lesgourgues, J, Macias-Perez, J, Martínez-González, E, Matarrese, S, Matsumura, T, Montier, L, Namikawa, T, Paoletti, D, Poletti, D, Remazeilles, M, Shiraishi, M, van Tent, B, Tristram, M, Vacher, L, Vittorio, N, Weymann-Despres, G, Anand, A, Aumont, J, Aurlien, R, Banday, A, Barreiro, R, Basyrov, A, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Carralot, F, Casas, F, 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, Diego-Palazuelos, P, Eriksen, H, Franceschet, C, Fuskeland, U, Galloway, M, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Gimeno-Amo, C, Gjerløw, E, Gruppuso, A, Gudmundsson, J, Krachmalnicoff, N, Lamagna, L, Lattanzi, M, Lembo, M, Lonappan, A, Masi, S, Massa, M, Micheli, S, Moggi, A, Monelli, M, Morgante, G, Mot, B, Mousset, L, Nagata, R, Natoli, P, Novelli, A, Obata, I, Pagano, L, Paiella, A, Pavlidou, V, Piacentini, F, Pinchera, M, Pisano, G, Puglisi, G, Raffuzzi, N, Ritacco, A, Rizzieri, A, Ruiz-Granda, M, Savini, G, Scott, D, Signorelli, G, Stutzer, N, Sullivan, R, Tartari, A, Tassis, K, Terenzi, L, Thompson, K, Vielva, P, Wehusai, I, Zhout, Y, Campeti P., Komatsu E., Baccigalupi C., Ballardini M., Bartolo N., Carones A., Errard J., Finelli F., Flauger R., Galli S., Galloni G., Giardiello S., Hazumi M., Henrot-Versillé S., Hergt L. T., Kohri K., Leloup C., Lesgourgues J., Macias-Perez J., Martínez-González E., Matarrese S., Matsumura T., Montier L., Namikawa T., Paoletti D., Poletti D., Remazeilles M., Shiraishi M., van Tent B., Tristram M., Vacher L., Vittorio N., Weymann-Despres G., Anand A., Aumont J., Aurlien R., Banday A. J., Barreiro R. B., Basyrov A., Bersanelli M., Blinov D., Bortolami M., Brinckmann T., Calabrese E., Carralot F., Casas F. J., 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., Diego-Palazuelos P., Eriksen H. K., Franceschet C., Fuskeland U., Galloway M., Georges M., Gerbino M., Gervasi M., Ghigna T., Gimeno-Amo C., Gjerløw E., Gruppuso A., Gudmundsson J. E., Krachmalnicoff N., Lamagna L., Lattanzi M., Lembo M., Lonappan A. I., Masi S., Massa M., Micheli S., Moggi A., Monelli M., Morgante G., Mot B., Mousset L., Nagata R., Natoli P., Novelli A., Obata I., Pagano L., Paiella A., Pavlidou V., Piacentini F., Pinchera M., Pisano G., Puglisi G., Raffuzzi N., Ritacco A., Rizzieri A., Ruiz-Granda M., Savini G., Scott D., Signorelli G. Stever S. L., Stutzer N., Sullivan R. M., Tartari A., Tassis K., Terenzi L., Thompson K. L., Vielva P., Wehusai I. K., Zhout Y., Campeti, P, Komatsu, E, Baccigalupi, C, Ballardini, M, Bartolo, N, Carones, A, Errard, J, Finelli, F, Flauger, R, Galli, S, Galloni, G, Giardiello, S, Hazumi, M, Henrot-Versillé, S, Hergt, L, Kohri, K, Leloup, C, Lesgourgues, J, Macias-Perez, J, Martínez-González, E, Matarrese, S, Matsumura, T, Montier, L, Namikawa, T, Paoletti, D, Poletti, D, Remazeilles, M, Shiraishi, M, van Tent, B, Tristram, M, Vacher, L, Vittorio, N, Weymann-Despres, G, Anand, A, Aumont, J, Aurlien, R, Banday, A, Barreiro, R, Basyrov, A, Bersanelli, M, Blinov, D, Bortolami, M, Brinckmann, T, Calabrese, E, Carralot, F, Casas, F, 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, Diego-Palazuelos, P, Eriksen, H, Franceschet, C, Fuskeland, U, Galloway, M, Georges, M, Gerbino, M, Gervasi, M, Ghigna, T, Gimeno-Amo, C, Gjerløw, E, Gruppuso, A, Gudmundsson, J, Krachmalnicoff, N, Lamagna, L, Lattanzi, M, Lembo, M, Lonappan, A, Masi, S, Massa, M, Micheli, S, Moggi, A, Monelli, M, Morgante, G, Mot, B, Mousset, L, Nagata, R, Natoli, P, Novelli, A, Obata, I, Pagano, L, Paiella, A, Pavlidou, V, Piacentini, F, Pinchera, M, Pisano, G, Puglisi, G, Raffuzzi, N, Ritacco, A, Rizzieri, A, Ruiz-Granda, M, Savini, G, Scott, D, Signorelli, G, Stutzer, N, Sullivan, R, Tartari, A, Tassis, K, Terenzi, L, Thompson, K, Vielva, P, Wehusai, I, Zhout, Y, Campeti P., Komatsu E., Baccigalupi C., Ballardini M., Bartolo N., Carones A., Errard J., Finelli F., Flauger R., Galli S., Galloni G., Giardiello S., Hazumi M., Henrot-Versillé S., Hergt L. T., Kohri K., Leloup C., Lesgourgues J., Macias-Perez J., Martínez-González E., Matarrese S., Matsumura T., Montier L., Namikawa T., Paoletti D., Poletti D., Remazeilles M., Shiraishi M., van Tent B., Tristram M., Vacher L., Vittorio N., Weymann-Despres G., Anand A., Aumont J., Aurlien R., Banday A. J., Barreiro R. B., Basyrov A., Bersanelli M., Blinov D., Bortolami M., Brinckmann T., Calabrese E., Carralot F., Casas F. J., 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., Diego-Palazuelos P., Eriksen H. K., Franceschet C., Fuskeland U., Galloway M., Georges M., Gerbino M., Gervasi M., Ghigna T., Gimeno-Amo C., Gjerløw E., Gruppuso A., Gudmundsson J. E., Krachmalnicoff N., Lamagna L., Lattanzi M., Lembo M., Lonappan A. I., Masi S., Massa M., Micheli S., Moggi A., Monelli M., Morgante G., Mot B., Mousset L., Nagata R., Natoli P., Novelli A., Obata I., Pagano L., Paiella A., Pavlidou V., Piacentini F., Pinchera M., Pisano G., Puglisi G., Raffuzzi N., Ritacco A., Rizzieri A., Ruiz-Granda M., Savini G., Scott D., Signorelli G. Stever S. L., Stutzer N., Sullivan R. M., Tartari A., Tassis K., Terenzi L., Thompson K. L., Vielva P., Wehusai I. K., and Zhout Y.

Abstract

We study the possibility of using the LiteBIRD satellite B-mode survey to constrain models of inflation producing specific features in CMB angular power spectra. We explore a particular model example, i.e. spectator axion-SU(2) gauge field inflation. This model can source parity-violating gravitational waves from the amplification of gauge field fluctuations driven by a pseudoscalar "axionlike"field, rolling for a few e-folds during inflation. The sourced gravitational waves can exceed the vacuum contribution at reionization bump scales by about an order of magnitude and can be comparable to the vacuum contribution at recombination bump scales. We argue that a satellite mission with full sky coverage and access to the reionization bump scales is necessary to understand the origin of the primordial gravitational wave signal and distinguish among two production mechanisms: quantum vacuum fluctuations of spacetime and matter sources during inflation. We present the expected constraints on model parameters from LiteBIRD satellite simulations, which complement and expand previous studies in the literature. We find that LiteBIRD will be able to exclude with high significance standard single-field slow-roll models, such as the Starobinsky model, if the true model is the axion-SU(2) model with a feature at CMB scales. We further investigate the possibility of using the parity-violating signature of the model, such as the TB and EB angular power spectra, to disentangle it from the standard single-field slow-roll scenario. We find that most of the discriminating power of LiteBIRD will reside in BB angular power spectra rather than in TB and EB correlations.

Published
2024

17. The LiteBIRD mission to explore cosmic inflation

Author

Coyle, Laura E., Matsuura, Shuji, Perrin, Marshall D., Ghigna, T., Adler, A., Aizawa, K., Akamatsu, H., Akizawa, R., Allys, E., Anand, A., Aumont, J., Austermann, J., Azzoni, S., Baccigalupi, C., Ballardini, M., Banday, A., Barreiro, R., Bartolo, N., Basak, S., Basyrov, A., Beckman, S., Bersanelli, M., Bortolami, M., Bouchet, F., Brinckmann, T., Campeti, P., Carinos, E., Carones, A., Casas, F. J., Cheung, K., Chinone, Y., Clermont, L., Columbro, F., Coppolecchia, A., Curtis, D., de Bernardis, P., de Haan, T., de la Hoz, E., De Petris, M., Della Torre, S., Delle Monache, G., Di Giorgi, E., Dickinson, C., Diego-Palazuelos, P., Díaz García, J. J., Dobbs, M., Dotani, T., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Farias, N., Ferreira, E., Franceschet, C., Fuskeland, U., Galloni, G., Galloway, M., Ganga, K., Gerbino, M., Gervasi, M., Génova-Santos, R. T., Giardiello, S., Gimeno-Amo, C., Gjerløw, E., González González, R., Grandsire, L., Gruppuso, A., Halverson, N., Hargrave, P., Harper, S. E., Hazumi, M., Henrot-Versillé, S., Hergt, L. T., Herranz, D., Hivon, E., Hlozek, R., Hoang, T. D., Hubmayr, J., Ichiki, K., Ikuma, K., Ishino, H., Jaehnig, G., Jost, B., Kohri, K., Konishi, K., Lamagna, L., Lattanzi, M., Leloup, C., Levrier, F., Lanoppan, A., Luzzi, G., Macias-Perez, J., Maffei, B., Marchitelli, E., Martínez-González, E., Masi, S., Matarrese, S., Matsumura, T., Micheli, S., Migliaccio, M., Monelli, M., Montier, L., Morgante, G., Mousset, L., Nagano, Y., Nagata, R., Natoli, P., Novelli, A., Noviello, F., Obata, I., Occhiuzzi, A., Odagiri, K., Omae, R., Pagano, L., Paiella, A., Paoletti, D., Pascual-Cisneros, G., Patanchon, G., Pavlidou, V., Piacentini, F., Piat, M., Piccirilli, G., Pinchera, M., Pisano, G., Porcelli, L., Raffuzzi, N., Raum, C., Remazeilles, M., Ritacco, A., Rubino-Martin, J., Ruiz-Granda, M., Sakurai, Y., Savini, G., Scott, D., Sekimoto, Y., Shiraishi, M., Signorelli, G., Stever, S. L., Sullivan, R., Suzuki, A., Takaku, R., Takakura, H., Takakura, S., Takase, Y., Tartari, A., Tassis, K., Thompson, K. L., Tomasi, M., Tristram, M., Tucker, C., Vacher, L., van Tent, B., Vielva, P., Watanuki, K., Wehus, I. K., Westbrook, B., Weymann-Despres, G., Winter, B., Wollack, E. J., Zacchei, A., Zannoni, M., and Zhou, Y.

Published
2024
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