C. Gimeno-Amo
A5092352543- Cosmology and Gravitation Theories
- Radio Astronomy Observations and Technology
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Galaxies: Formation, Evolution, Phenomena
- Superconducting and THz Device Technology
- Dark Matter and Cosmic Phenomena
- Blind Source Separation Techniques
- Astronomy and Astrophysical Research
- Atmospheric and Environmental Gas Dynamics
- Monetary Policy and Economic Impact
- Astrophysics and Cosmic Phenomena
- Advanced Data Compression Techniques
- Advanced Optical Sensing Technologies
- Sparse and Compressive Sensing Techniques
- Atmospheric Ozone and Climate
- Geomagnetism and Paleomagnetism Studies
- Wireless Communication Networks Research
- Spectroscopy and Quantum Chemical Studies
- Spectroscopy and Chemometric Analyses
- Seismic Imaging and Inversion Techniques
- GNSS positioning and interference
- Relativity and Gravitational Theory
Instituto de Física de Cantabria
2023-2024
The University of Tokyo
2024
University of Rome Tor Vergata
2024
Campbell Collaboration
2023
Universidad de Cantabria
2023
Abstract We study the possibility of using LiteBIRD satellite B -mode survey to constrain models inflation producing specific features in CMB angular power spectra. explore a particular model example, i.e. spectator axion-SU(2) gauge field inflation. This can source parity-violating gravitational waves from amplification fluctuations driven by pseudoscalar “axionlike” field, rolling for few e-folds during The sourced exceed vacuum contribution at reionization bump scales about an order...
Abstract We estimate the efficiency of mitigating lensing B -mode polarization, so-called delensing, for LiteBIRD experiment with multiple external data sets lensing-mass tracers. The current best bound on tensor-to-scalar ratio, r , is limited by rather than Galactic foregrounds. Delensing will be a critical step to improve sensitivity as measurements become more and lensing. In this paper, we extend analysis recent forecast paper include mass tracers, i.e., CMB maps from CMB-S4-like...
Abstract We present a study of the impact beam far side-lobe lack knowledge on measurement Cosmic Microwave Background B -mode signal at large scale. Beam side-lobes induce mismatch in transfer function Galactic foregrounds between dipole and higher multipoles which degrads performances component separation methods. This leads to foreground residuals CMB map. It is expected be one main source systematic effects future polarization observations. Thus, it becomes crucial for all-sky survey...
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 noise 2.16 μ K-arcmin, will be able to measure cosmic microwave background (CMB) very precisely. This unique sensitivity also enables reconstruction nearly map using only data, even considering its limited capture small-scale CMB anisotropies. In this paper, we investigate ability construct measurement presence Galactic foregrounds,...
Abstract The detection of primordial B modes the cosmic microwave background (CMB) could provide information about early stages Universe's evolution. faintness this signal requires exquisite calibration accuracy and control instrumental systematic effects which otherwise bias measurements. In work, we study impact an imperfect relative polarisation gain on recovered value tensor-to-scalar ratio r for LiteBIRD experiment, through application blind Needlet Internal Linear Combination (NILC)...
Abstract One of the foundations Standard Model Cosmology is statistical isotropy, which can be tested, among other probes, through study Cosmic Microwave Background (CMB). However, a hemispherical power asymmetry on large scales has been reported for WMAP and Planck data by different works. The significance above 3 σ temperature, suggesting directional dependence local spectrum, thus feature beyond ΛCDM model. With third release (PR3), new analysis was performed including E-mode polarization...
LiteBIRD, the next-generation cosmic microwave background (CMB) experiment, aims for a launch in Japan's fiscal year 2032, marking major advancement exploration of primordial cosmology and fundamental physics. Orbiting Sun-Earth Lagrangian point L2, this JAXA-led strategic L-class mission will conduct comprehensive mapping CMB polarization across entire sky. During its 3-year mission, LiteBIRD employ three telescopes within 15 unique frequency bands (ranging from 34 through 448 GHz),...
Abstract We present detailed forecasts for the constraints on characteristics of primordial magnetic fields (PMFs) generated prior to recombination that will be obtained with LiteBIRD satellite. The are driven by some main physical effects PMFs CMB anisotropies: gravitational magnetically-induced perturbations; thermal and ionization history Universe; Faraday rotation imprint polarization spectra; non-Gaussianities induced in anisotropies. represents a sensitive probe PMFs. explore different...
We present detailed forecasts for the constraints on primordial magnetic fields (PMFs) that will be obtained with LiteBIRD satellite. The are driven by effects of PMFs CMB anisotropies: gravitational magnetically-induced perturbations; thermal and ionization history Universe; Faraday rotation imprint polarization; non-Gaussianities induced in polarization anisotropies. represents a sensitive probe exploiting all physical effects, it able to improve current limit coming from Planck. In...
We assess the capabilities of LiteBIRD mission to map hot gas distribution in Universe through thermal Sunyaev-Zeldovich (SZ) effect. Our analysis relies on comprehensive simulations incorporating various sources Galactic and extragalactic foreground emission, while accounting for specific instrumental characteristics LiteBIRD, such as detector sensitivities, frequency-dependent beam convolution, inhomogeneous sky scanning, $1/f$ noise. implement a tailored component-separation pipeline SZ...
Large angular scale surveys in the absence of atmosphere are essential for measuring primordial $B$-mode power spectrum Cosmic Microwave Background (CMB). Since this proposed measurement is about three to four orders magnitude fainter than temperature anisotropies CMB, in-flight calibration instruments and active suppression systematic effects crucial. We investigate effect changing parameters scanning strategy on effectiveness, themselves, ability distinguish by null-tests. Next-generation...
Future cosmic microwave background (CMB) experiments are primarily targeting a detection of the primordial $B$-mode polarisation. The faintness this signal requires exquisite control systematic effects which may bias measurements. In work, we derive requirements on relative calibration accuracy overall polarisation gain ($\Delta g_\nu$) for LiteBIRD experiment, through application blind Needlet Internal Linear Combination (NILC) foreground-cleaning method. We find that minimum variance...
Abstract We assess the capabilities of LiteBIRD mission to map hot gas distribution in Universe through thermal Sunyaev-Zeldovich (SZ) effect. Our analysis relies on comprehensive simulations incorporating various sources Galactic and extragalactic foreground emission, while accounting for specific instrumental characteristics mission, such as detector sensitivities, frequency-dependent beam convolution, inhomogeneous sky scanning, 1/ f noise. implement a tailored component-separation...
The presence of astrophysical emissions in microwave observations forces us to perform component separation extract the Cosmic Microwave Background (CMB) signal. However, even most optimistic cases, there are still strongly contaminated regions, such as Galactic plane or those with emission from extragalactic point sources, which require use a mask. Since many CMB analyses, especially ones working harmonic space, need whole sky map, it is crucial develop reliable inpainting algorithm that...
Recent observations have indicated a Cosmic Microwave Background (CMB) temperature decrement in the direction of local galaxies within 2MASS Redshift Survey. We investigate this detection by analyzing its frequency dependence and sensitivity to component separation methods, suggesting that Galactic foregrounds are unlikely be cause. Contrary previous studies, we find is independent galaxy type, indicating possible correlation between CMB overall matter density field. To test hypothesis,...
Abstract The presence of astrophysical emissions in microwave observations forces us to perform component separation extract the Cosmic Microwave Background (CMB) signal. However, even most optimistic cases, there are still strongly contaminated regions, such as Galactic plane or those with emission from extragalactic point sources, which require use a mask. Since many CMB analyses, especially ones working harmonic space, need whole sky map, it is crucial develop reliable inpainting...
We explore the capability of measuring lensing signals in $LiteBIRD$ full-sky polarization maps. With a $30$ arcmin beam width and an impressively low noise $2.16\,\mu$K-arcmin, will be able to measure cosmic microwave background (CMB) very precisely. This unique sensitivity also enables reconstruction nearly map using only data, even considering its limited capture small-scale CMB anisotropies. In this paper, we investigate ability construct measurement presence Galactic foregrounds,...
One of the foundations Standard Model Cosmology is statistical isotropy, which can be tested, among other probes, through study Cosmic Microwave Background (CMB). However, a hemispherical power asymmetry on large scales has been reported for WMAP and Planck data by different works. The significance above 3${\sigma}$ temperature, suggesting directional dependence local spectrum, thus feature beyond ${\Lambda}$CDM model. With third release (PR3), new analysis was performed including E-mode...
We study the possibility of using $LiteBIRD$ satellite $B$-mode survey to constrain models inflation producing specific features in CMB angular power spectra. explore a particular model example, i.e. spectator axion-SU(2) gauge field inflation. This can source parity-violating gravitational waves from amplification fluctuations driven by pseudoscalar "axionlike" field, rolling for few e-folds during The sourced exceed vacuum contribution at reionization bump scales about an order magnitude...
We estimate the efficiency of mitigating lensing $B$-mode polarization, so-called delensing, for $LiteBIRD$ experiment with multiple external data sets lensing-mass tracers. The current best bound on tensor-to-scalar ratio, $r$, is limited by rather than Galactic foregrounds. Delensing will be a critical step to improve sensitivity $r$ as measurements become more and lensing. In this paper, we extend analysis recent forecast paper include mass tracers, i.e., CMB maps from CMB-S4-like...
We present a study of the impact an uncertainty in beam far side-lobe knowledge on measurement Cosmic Microwave Background $B$-mode signal at large scale. It is expected to be one main source systematic effects future CMB observations. Because it crucial for all-sky survey missions take into account interplays between and all data analysis steps, primary goal this paper provide methodology carry out end-to-end their effect space-borne polarization experiment, up cosmological results form...