A. Paiella
A5012234317- Superconducting and THz Device Technology
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Geophysics and Gravity Measurements
- Astrophysics and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- Dark Matter and Cosmic Phenomena
- Advanced Thermodynamic Systems and Engines
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Calibration and Measurement Techniques
- Antenna Design and Optimization
- Astrophysics and Star Formation Studies
- Scientific Research and Discoveries
- Advanced Frequency and Time Standards
- Microwave Engineering and Waveguides
- Adaptive optics and wavefront sensing
- Geomagnetism and Paleomagnetism Studies
- Pulsars and Gravitational Waves Research
- Particle Detector Development and Performance
- CCD and CMOS Imaging Sensors
- Radio Frequency Integrated Circuit Design
- GNSS positioning and interference
- Thermal Radiation and Cooling Technologies
Sapienza University of Rome
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2017-2024
University of Rome Tor Vergata
2018-2024
National Institute of Standards and Technology
2024
Istituto Nazionale di Fisica Nucleare
2019-2024
Campbell Collaboration
2023
High Energy Accelerator Research Organization
2020
The University of Tokyo
2020
University of California, San Diego
2020
National University of Ireland, Maynooth
2018
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...
We demonstrate that, for the baseline design of CORE satellite mission, polarized foregrounds can be controlled at level required to allow detection primordial cosmic microwave background (CMB) B-mode polarization with desired accuracy both reionization and recombination scales, tensor-to-scalar ratio values r≳ 5× 10−3. consider detailed sky simulations based on state-of-the-art CMB observations that consist τ=0.055 ranging from r=10−2 10−3, Galactic synchrotron, thermal dust variable...
Lensing of the CMB is now a well-developed probe large-scale clustering over broad range redshifts. By exploiting non-Gaussian imprints lensing in polarization CMB, CORE mission can produce clean map deflections nearly full-sky. The number high-S/N modes this will exceed current maps by factor 40, and measurement be sample-variance limited on all scales where linear theory valid. Here, we summarise product discuss science that it enable. For example, summed mass neutrinos determined to an...
We describe a space-borne, multi-band, multi-beam polarimeter aiming at precise and accurate measurement of the polarization Cosmic Microwave Background. The instrument is optimized to be compatible with strict budget requirements medium-size space mission within Vision Programme European Space Agency. has no moving parts, uses arrays diffraction-limited Kinetic Inductance Detectors cover frequency range from 60 GHz 600 in 19 wide bands, focal plane 1.2 m aperture telescope cooled 40 K,...
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 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 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 The MIllimeter Sardinia radio Telescope Receiver based on Array of Lumped elements (MISTRAL) KIDs is a millimeter camera operating at 90GHz that was recently installed the Radio (SRT) as part SRT-HighFreq program, which aims to expand capabilities telescope up W-band. After technical and scientific commissioning (2023–2024), MISTRAL will be open proposals from scientists facility instrument. provides wide 4’ field view, sampled resolution 12” with approximately 400 kinetic...
We designed, fabricated, and characterized four arrays of horn--coupled, lumped element kinetic inductance detectors (LEKIDs), optimized to work in the spectral bands balloon-borne OLIMPO experiment. is a 2.6 m aperture telescope, aimed at spectroscopic measurements Sunyaev-Zel'dovich (SZ) effect. will also validate LEKID technology representative space environment. The corrected focal plane filled with diffraction limited horn-coupled KID arrays, 19, 37, 23, 41 active pixels respectively...
We report on the performance of lumped-elements Kinetic Inductance Detector (KID) arrays for mm and sub-mm wavelengths, operated at 0.3 K during stratospheric flight OLIMPO payload, an altitude 37.8 km. find that detectors can be tuned in-flight, their is robust against radiative background changes due to varying telescope elevation. also noise equivalent power in smaller by a factor ∼ 2, 8, 3.5, 4.5 150, 250, 350 460 GHz relative one measured laboratory, close our calculated...
Abstract A prototype version of the Q & U bolometric interferometer for cosmology (QUBIC) underwent a campaign testing in laboratory at Astroparticle Physics and Cosmology Paris (APC). The detection chain is currently made 256 NbSi transition edge sensors (TES) cooled to 320 mK. readout system 128:1 time domain multiplexing scheme based on 128 SQUIDs 1 K that are controlled amplified by SiGe application specific integrated circuit 40 K. We report performance this characterization TES....
We discuss the potential of a next generation space-borne Cosmic Microwave Background (CMB) experiment for studies extragalactic sources. Our analysis has particular bearing on definition future space project, CORE, that been submitted in response to ESA's call Medium-size mission opportunity as successor Planck satellite. Even though effective telescope size will be somewhat smaller than Planck, CORE have considerably better angular resolution at its highest frequencies, since, contrast...
We examine the cosmological constraints that can be achieved with a galaxy cluster survey future CORE space mission. Using realistic simulations of millimeter sky, produced latest version Planck Sky Model, we characterize catalogues as function main mission performance parameters. pay particular attention to telescope size, key improved angular resolution, and discuss comparison complementarity ambitious ground-based CMB experiments could deployed in next decade. A possible concept 150 cm...
In this paper we describe QUBIC, an experiment that will observe the polarized microwave sky with a novel approach, which combines sensitivity of state-of-the art bolometric detectors systematic effects control typical interferometers. QUBIC unique features are so-called "self-calibration", technique allows us to clean measured data from instrumental effects, and its spectral imaging power, i.e. ability separate signal in various sub-bands within each frequency band. two main bands: 150 GHz...
OLIMPO is a proposed Antarctic balloon-borne Sunyaev-Zel'dovich effect (SZE) imager to study gas dynamics associated with structure formation along the properties of warm-hot intergalactic medium (WHIM) residing in connective filaments. During 25 day flight will image total 10 z~0.05 galaxy clusters and 8 bridges at 145, 250, 365, 460 GHz an angular resolution 1.0'-3.3'. The maps be significantly deeper than those planned from CMB-S4 CCAT-P, have excellent fidelity large scales our low-z...
Bolometric interferometry is a novel technique that has the ability to perform spectral imaging. A bolometric interferometer observes sky in wide frequency band and can reconstruct maps several sub-bands within physical post-processing of data. This provides powerful method discriminate between cosmic microwave background (CMB) astrophysical foregrounds. In this paper, methodology illustrated with examples based on Q \& U Interferometer for Cosmology (QUBIC) which ground-based instrument...
Abstract The MIllimetric Sardinia radio Telescope Receiver based on Array of Lumped elements KIDs, MISTRAL, is a cryogenic W-band (77–103 GH) LEKID camera which will be integrated at the Gregorian focus 64 m aperture Radio Telescope, in Italy, Autumn 2022. This instrument, thanks to its high angular resolution ( $$\sim 13~{\mathrm{arcsec}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>13</mml:mn> <mml:mspace /> <mml:mi>arcsec</mml:mi>...
We discuss the effects on CMB, CIB, and thermal SZ effect due to peculiar motion of an observer with respect CMB rest frame, which induces boosting effects. investigate scientific perspectives opened by future space missions, focussing CORE proposal. The improvements in sensitivity offered a mission like CORE, together its high resolution over wide frequency range, will provide more accurate estimate dipole. extension polarization cross-correlations enable robust determination purely...