2.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP25 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP15 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PadovaIT10 papers
- University of PaduaIT10 papers
- Hokkaido UniversityJP9 papers
- Kyoto UniversityJP9 papers
- Osservatorio Astronomico di PadovaIT9 papers
- Max Planck Institute for AstrophysicsDE8 papers
- The University of OsakaJP8 papers
- Agenzia Spaziale ItalianaIT6 papers
- Cardiff UniversityGB6 papers
- Centre National de la Recherche ScientifiqueFR6 papers
25 papers · 1 filter
Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations
U. Fuskeland, J. Aumont, R. Aurlien +114
LiteBIRD is a planned JAXA-led CMB B-mode satellite experiment aiming for launch in the late 2020s, with a primary goal of detecting the imprint of primordial inflationary gravitat…
New constraints on axion-gauge field dynamics during inflation from and BICEP/Keck data sets
Paolo Campeti, Ogan Özsoy, Ippei Obata +1
We present new constraints on spectator axion- gauge field interactions during inflation using the latest (PR4) and BICEP/Keck 2018 data releases. This model c…
Polarization angle requirements for CMB B-mode experiments. Application to the LiteBIRD satellite
P. Vielva, E. Martínez-González, F. J. Casas +68
A methodology to provide the polarization angle requirements for different sets of detectors, at a given frequency of a CMB polarization experiment, is presented. The uncertainties…
In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implications
Nicoletta Krachmalnicoff, Tomotake Matsumura, Elena de la Hoz +67
We present a demonstration of the in-flight polarization angle calibration for the JAXA/ISAS second strategic large class mission, LiteBIRD, and estimate its impact on the measurem…
Gravitational wave trispectrum in the axion-SU(2) model
Tomohiro Fujita, Kai Murai, Ippei Obata +1
We study the trispectrum of the gravitational waves (GWs) generated through the dynamics of an axionic spectator field and SU(2) gauge fields during inflation. In non-Abelian gauge…
Alcock-Paczynski effects on wide-angle galaxy statistics
Maresuke Shiraishi, Kazuyuki Akitsu, Teppei Okumura
The Alcock-Paczynski (AP) effect is a geometrical distortion in three-dimensional observed galaxy statistics. In anticipation of precision cosmology based on ongoing and upcoming a…
Wide-angle effects on galaxy ellipticity correlations
Maresuke Shiraishi, Atsushi Taruya, Teppei Okumura +1
We show an efficient way to compute wide-angle or all-sky statistics of galaxy intrinsic alignment in three-dimensional configuration space. For this purpose, we expand the two-poi…
Cross-correlations as a Diagnostic Tool for Primordial Gravitational Waves
Ameek Malhotra, Ema Dimastrogiovanni, Matteo Fasiello +1
We explore and corroborate, by working out explicit examples, the effectiveness of cross-correlating stochastic gravitational wave background anisotropies with CMB temperature fluc…
Minimum variance estimation of statistical anisotropy via galaxy survey
Maresuke Shiraishi, Teppei Okumura, Kazuyuki Akitsu
We consider the benefits of measuring cosmic statistical anisotropy from redshift-space correlators of the galaxy number density fluctuation and the peculiar velocity field without…
Minimum variance estimation of galaxy power spectrum in redshift space
Maresuke Shiraishi, Teppei Okumura, Naonori S. Sugiyama +1
We study an efficient way to enhance the measurability of the galaxy density and/or velocity power spectrum in redshift space. It is based on the angular decomposition with the Tri…
Constraining graviton non-Gaussianity through the CMB bispectra
Valerio De Luca, Gabriele Franciolini, Alex Kehagias +2
Tensor non-Gaussianities are a key ingredient to test the symmetries and the presence of higher spin fields during the inflationary epoch. Indeed, the shape of the three point corr…
Super-sample tidal modes on the celestial sphere
Kazuyuki Akitsu, Naonori S. Sugiyama, Maresuke Shiraishi
The super-sample tidal effect carries information on long-wavelength fluctuations that we cannot measure directly. It arises from the mode-coupling between short-wavelength and lon…
Tensor Non-Gaussianity Search: Current Status and Future Prospects
Maresuke Shiraishi
Primordial gravitational waves (GWs) are said to be a smoking gun in cosmic inflation, while, even if they are detected, the specification of their origins are still required for e…
General modal estimation for cross-bispectra
Maresuke Shiraishi, Michele Liguori, James R. Fergusson +1
We describe a fast, optimal estimator for measuring angular bispectra between two correlated weakly non-Gaussian fields ( and ) from observational datasets, based on a separa…
Tensor Spectra Templates for Axion-Gauge Fields Dynamics during Inflation
Tomohiro Fujita, Evangelos I. Sfakianakis, Maresuke Shiraishi
gauge fields can generate large gravitational waves during inflation, if they are coupled to an axion which can be either the inflaton or a spectator field. The shape of th…
Measuring chiral gravitational waves in Chern-Simons gravity with CMB bispectra
Nicola Bartolo, Giorgio Orlando, Maresuke Shiraishi
Chern-Simons gravity coupled to the scalar sector through a generic coupling function can be tested at the very high energies of the inflationary period. In 1706.04627, we c…
Planck 2018 results. X. Constraints on inflation
Planck Collaboration, Y. Akrami, F. Arroja +173
We report on the implications for cosmic inflation of the 2018 Release of the Planck CMB anisotropy measurements. The results are fully consistent with the two previous Planck cosm…
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Planck Collaboration, Y. Akrami, F. Arroja +188
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave…
Detecting higher spin fields through statistical anisotropy in the CMB bispectrum
Gabriele Franciolini, Alex Kehagias, Antonio Riotto +1
Inflation may provide a suitable collider to probe physics at very high energies. In this paper we investigate the impact on the CMB bispectrum of higher spin fields which are long…
CMB bounds on tensor-scalar-scalar inflationary correlations
Maresuke Shiraishi, Michele Liguori, James R. Fergusson
The nonlinear interaction between one graviton and two scalars is enhanced in specific inflationary models, potentially leading to distinguishable signatures in the bispectrum of t…
Detecting higher spin fields through statistical anisotropy in the CMB and galaxy power spectra
Nicola Bartolo, Alex Kehagias, Michele Liguori +3
Primordial inflation may represent the most powerful collider to test high-energy physics models. In this paper we study the impact on the inflationary power spectrum of the comovi…
Primordial non-Gaussianity with -type and -type spectral distortions: exploiting Cosmic Microwave Background polarization and dealing with secondary sources
Andrea Ravenni, Michele Liguori, Nicola Bartolo +1
Cross-correlations between Cosmic Microwave Background (CMB) temperature and -spectral distortions anisotropies have been previously proposed as a way to measure the local bispe…
Finding the chiral gravitational wave background of an axion-SU(2) inflationary model using CMB observations and laser interferometers
Ben Thorne, Tomohiro Fujita, Masashi Hazumi +3
A detection of B-mode polarization of the Cosmic Microwave Background (CMB) anisotropies would confirm the presence of a primordial gravitational wave background (GWB). In the infl…
Limits on statistical anisotropy from BOSS DR12 galaxies using bipolar spherical harmonics
Naonori S. Sugiyama, Maresuke Shiraishi, Teppei Okumura
We measure statistically anisotropic signatures imprinted in three-dimensional galaxy clustering using bipolar spherical harmonics (BipoSHs) in both Fourier space and configuration…