Explanipedia

A simulation framework for the LiteBIRD instruments Open

M. Tomasi, L. Pagano, A. Anand, C. Baccigalupi, A. J. Banday , et al. · 2025

LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission focused on primordial cosmology and fundamental physics. In this paper, we present the L…

A simulation framework for the <i>LiteBIRD</i> instruments Open

M Tomasi, L. Pagano, Anil C. Anand, C Baccigalupi, A. J. Banday , et al. · 2025

LiteBIRD , the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission focused on primordial cosmology and fundamental physics. In this paper, we present the …

LiteBIRD science goals and forecasts: improved full-sky reconstruction of the gravitational lensing potential through the combination of Planck and LiteBIRD data Open

M. Ruiz-Granda, P. Diego-Palazuelos, C. Gimeno-Amo, P. Vielva, A.I. Lonappan , et al. · 2025

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 deflectio…

First release of <i>LiteBIRD</i> simulations from an end-to-end pipeline Open

M. Bortolami, N. Raffuzzi, L. Pagano, Giuseppe Puglisi, A. J. Banday , et al. · 2025

The LiteBIRD satellite mission aims at detecting Cosmic Microwave Background B modes with unprecedented precision, targeting a total error on the tensor-to-scalar ratio r of δr ∼ 0.001. Operating from the L2 Lagrangian point of the Sun-Ear…

Requirements on bandpass resolution and measurement precision for LiteBIRD Open

S. Giardiello, A. Carones, T. Ghigna, L. Pagano, F. Piacentini , et al. · 2025

Systematic effects can hinder the sought-after detection of primordial gravitational waves, impacting the reconstruction of the B -mode polarization signal which they generate in the cosmic microwave background (CMB). In this work, we stud…

Square Kilometre Array Science Data Challenge 3a: foreground removal for an EoR experiment Open

Anna Bonaldi, Philippa Hartley, Robert D. Braun, S. J. D. Purser, Anshuman Acharya , et al. · 2025

We present and analyse the results of the Science Data Challenge 3a (SDC3a, https://sdc3.skao.int/challenges/foregrounds), an epoch of reionization (EoR) foreground-removal exercise organized by the Square Kilometre Array Observatory (SKAO…

LiteBIRD Science Goals and Forecasts. $E$-mode Anomalies Open

A. J. Banday, C. Gimeno-Amo, P. Diego-Palazuelos, E. de la Hoz, A. Gruppuso , et al. · 2025

Various so-called anomalies have been found in both the WMAP and Planck cosmic microwave background (CMB) temperature data that exert a mild tension against the highly successful best-fit 6 parameter cosmological model, potentially providi…

First release of LiteBIRD simulations from an end-to-end pipeline Open

M. Bortolami, N. Raffuzzi, L. Pagano, Giuseppe Puglisi, Ashish Anand , et al. · 2025

The LiteBIRD satellite mission aims at detecting Cosmic Microwave Background $B$ modes with unprecedented precision, targeting a total error on the tensor-to-scalar ratio $r$ of $δr \sim 0.001$. Operating from the L2 Lagrangian point of th…

On the computational feasibility of Bayesian end-to-end analysis of LiteBIRD simulations within Cosmoglobe Open

R Aurvik, M. Galloway, E. Gjerløw, U Fuskeland, A. Basyrov , et al. · 2025

We assess the computational feasibility of end-to-end Bayesian analysis of the JAXA-led LiteBIRD experiment by analysing simulated time ordered data (TOD) for a subset of detectors through the Cosmoglobe and Commander3 framework. The data …

LiteBIRD science goals and forecasts: constraining isotropic cosmic birefringence Open

E. de la Hoz, P. Diego-Palazuelos, Josquin Errard, A. Gruppuso, Baptiste Jost , et al. · 2025

Cosmic birefringence (CB) is the rotation of the photons' linear polarisation plane during propagation. Such an effect is a tracer of parity-violating extensions of standard electromagnetism and would probe the existence of a new cosmologi…

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

F. Carralot, A. Carones, N. Krachmalnicoff, T. Ghigna, A. Novelli , et al. · 2025

The detection of primordial B modes of the cosmic microwave background (CMB) could provide information about the early stages of the Universe's evolution. The faintness of this signal requires exquisite calibration accuracy and control of …

LiteBIRD science goals and forecasts. Mapping the hot gas in the Universe Open

M. Remazeilles, M. Douspis, J.A. Rubiño-Martín, A. J. Banday, J. Chluba , et al. · 2024

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 Galacti…

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

Y. Takase, L. Vacher, H. Ishino, G. Patanchon, L. Montier , et al. · 2024

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 …

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

F. Carralot, A. Carones, N Krachmalnicoff, T. Ghigna, Andrea Novelli , et al. · 2024

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…

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

M. Remazeilles, M. Douspis, J. A. Rubiño-Martín, A. J. Banday, Jens Chluba , et al. · 2024

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 Galacti…

LiteBIRD science goals and forecasts: primordial magnetic fields Open

D. Paoletti, J. A. Rubiño-Martín, Maresuke Shiraishi, D. Molinari, Jens Chluba , et al. · 2024

We present detailed forecasts for the constraints on the characteristics of primordial magnetic fields (PMFs) generated prior to recombination that will be obtained with the LiteBIRD satellite. The constraints are driven by some of the mai…

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

C. Leloup, G. Patanchon, Josquin Errard, C. Franceschet, Jon E. Gudmundsson , et al. · 2024

We present a study of the impact of a beam far side-lobe lack of knowledge on the measurement of the Cosmic Microwave Background B -mode signal at large scale. Beam far side-lobes induce a mismatch in the transfer function of Galactic fore…

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

A.I. Lonappan, Toshiya Namikawa, G. Piccirilli, P. Diego-Palazuelos, M. Ruiz-Granda , et al. · 2024

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 μ K-arcmin, LiteBIRD will be able to measure the full-sky polariz…

LiteBIRD science goals and forecasts: improving sensitivity to inflationary gravitational waves with multitracer delensing Open

Toshiya Namikawa, A.I. Lonappan, C. Baccigalupi, N. Bartolo, D. Beck , et al. · 2024

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,…

LiteBIRD Science Goals and Forecasts: Primordial Magnetic Fields Open

D. Paoletti, J. A. Rubiño-Martín, Maresuke Shiraishi, D. Molinari, Jens Chluba , et al. · 2024

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 …

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

C. Leloup, G. Patanchon, J. Errard, C. Franceschet, Jon E. Gudmundsson , et al. · 2023

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 …

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

Toshiya Namikawa, A.I. Lonappan, C. Baccigalupi, N. Bartolo, D. Beck , et al. · 2023

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 rat…

LiteBIRD Science Goals and Forecasts: A full-sky measurement of gravitational lensing of the CMB Open

A.I. Lonappan, Toshiya Namikawa, G. Piccirilli, P. Diego-Palazuelos, M. Ruiz-Granda , et al. · 2023

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 $2.16\,μ$K-arcmin, $LiteBIRD$ will be able to measure the full-sky…

In-orbit Performance of the Near-infrared Spectrograph NIRSpec on the James Webb Space Telescope Open

Torsten Böker, Tracy L. Beck, Stephan M. Birkmann, Giovanna Giardino, C. D. Keyes , et al. · 2023

The Near-Infrared Spectrograph (NIRSpec) is one of the four focal plane instruments on the James Webb Space Telescope. In this paper, we summarize the in-orbit performance of NIRSpec, as derived from data collected during its commissioning…

Machine learning approach to the detection of point sources in maps of the CMB temperature anisotropies Open

P. Diego-Palazuelos, R. B. Barreiro, P. Vielva, David Balbás, M. López-Caniego , et al. · 2023

We propose a machine learning approach to the blind detection of extragalactic point sources on maps of the temperature anisotropies of the cosmic microwave background. Using realistic simulations of the microwave sky as seen by Planck, we…

TACTICIAN: AI-based applications knowledge extraction from ESA’s mission scientific publications Open

Omiros Giannakis, Iason Demiros, Konstantinos Koutroumbas, Athanasios A. Rontogiannis, Vassilis Z. Antonopoulos , et al. · 2023

Scientific publications in space science contain valuable and extensive information regarding the links and relationships between the data interpreted by the authors and the associated observational elements (e.g., instruments or experimen…

In-orbit Performance of the Near-Infrared Spectrograph NIRSpec on the James Webb Space Telescope Open

T. Böker, T. L. Beck, S. M. Birkmann, G. Giardino, C. Keyes , et al. · 2023

The Near-Infrared Spectrograph (NIRSpec) is one of the four focal plane instruments on the James Webb Space Telescope. In this paper, we summarize the in-orbit performance of NIRSpec, as derived from data collected during its commissioning…

Cosmic backgrounds from the radio to the far-infrared: Recent results and perspectives from cosmological and astrophysical surveys Open

C. Burigana, Elia Sefano Battistelli, L. Bonavera, Tirthankar Roy Choudhury, M. López-Caniego , et al. · 2023

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QUIJOTE scientific results – IV. A northern sky survey in intensity and polarization at 10–20 GHz with the multifrequency instrument Open

J. A. Rubiño-Martín, F. Guidi, R. Génova-Santos, Stuart Harper, D. Herranz , et al. · 2023

We present QUIJOTE intensity and polarization maps in four frequency bands centred around 11, 13, 17, and 19 GHz, and covering approximately 29 000 deg2, including most of the northern sky region. These maps result from 9000 h of observati…

QUIJOTE scientific results – IX. Radio sources in the QUIJOTE-MFI wide survey maps Open

D. Herranz, M. López-Caniego, C. H. López-Caraballo, R. Génova-Santos, Y. C. Perrott , et al. · 2023

We present the catalogue of Q-U-I JOint TEnerife (QUIJOTE) Wide Survey radio sources extracted from the maps of the Multi-Frequency Instrument compiled between 2012 and 2018. The catalogue contains 786 sources observed in intensity and pol…

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