L. Lamagna
A5107748925- Superconducting and THz Device Technology
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Geophysics and Gravity Measurements
- Astrophysics and Star Formation Studies
- Physics of Superconductivity and Magnetism
- Dark Matter and Cosmic Phenomena
- Solar and Space Plasma Dynamics
- Astronomical Observations and Instrumentation
- Calibration and Measurement Techniques
- Advanced Thermodynamic Systems and Engines
- Advanced Frequency and Time Standards
- Spacecraft and Cryogenic Technologies
- Antenna Design and Optimization
- Microwave Engineering and Waveguides
- Atomic and Subatomic Physics Research
- Adaptive optics and wavefront sensing
- Stellar, planetary, and galactic studies
- Gamma-ray bursts and supernovae
- Geomagnetism and Paleomagnetism Studies
- Radio Frequency Integrated Circuit Design
- Scientific Research and Discoveries
Sapienza University of Rome
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2010-2024
Istituto Nazionale di Fisica Nucleare
2020-2023
Osaka University
2018
Kyoto University
2018
Nagoya University
2018
Tohoku University
2018
The University of Tokyo
2018
Istituto di Fotonica e Nanotecnologie
2015-2017
Arcetri Astrophysical Observatory
2015
Abstract LiteBIRD, the Lite (Light) satellite for study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission primordial cosmology fundamental physics. The Japan Aerospace Exploration Agency (JAXA) selected LiteBIRD in May 2019 as strategic large-class (L-class) mission, with an expected launch late 2020s using JAXA’s H3 rocket. planned to orbit Sun–Earth Lagrangian point L2, where it will map microwave over entire sky three years, telescopes 15...
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...
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)...
The LSPE is a balloon-borne mission aimed at measuring the polarization of Cosmic Microwave Background (CMB) large angular scales, and in particular to constrain curl component CMB (B-modes) produced by tensor perturbations generated during cosmic inflation, very early universe. Its primary target improve limit on ratio scalar amplitudes down r = 0.03, 99.7% confidence. A second produce wide maps foreground our Galaxy synchrotron emission interstellar dust emission. These will be important...
The balloon-borne LSPE mission is optimized to measure the linear polarization of Cosmic Microwave Background at large angular scales. Short Wavelength Instrument for Polarization Explorer (SWIPE) composed 3 arrays multi-mode bolometers cooled 0.3K , with optical components and filters cryogenically below 4K reduce background on detectors. Polarimetry achieved by means rotating half-wave plates wire-grid polarizers in front arrays. modulator first component chain, reducing significantly...
Abstract We present a demonstration of the in-flight polarization angle calibration for JAXA/ISAS second strategic large class mission, LiteBIRD , and estimate its impact on measurement tensor-to-scalar ratio parameter, r using simulated data. generate set sky maps with CMB polarized foreground emission, inject instrumental noise offsets to 22 (partially overlapping) frequency channels. Our relies nulling EB cross correlation signal in each channel. This step has been carried out by two...
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....
The Sunyaev-Zel'dovich (SZ) effect is a powerful tool for studying clusters of galaxies and cosmology. Large mm-wave telescopes are now routinely detecting mapping the SZ in number clusters, measure their comptonisation parameter use them as probes large-scale structure evolution universe. We show that estimates physical parameters (optical depth, plasma temperature, peculiar velocity, non-thermal components etc.) obtained from ground-based multi-band photometry can be significantly biased,...
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 have observed the Andromeda galaxy, Messier 31 (M31), at 6.7GHz with Sardinia Radio Telescope. mapped radio emission in C-band, re-analyzed WMAP and Planck maps, as well other ancillary data, we derived an overall integrated flux density spectrum from to infrared. This allowed us estimate budget M31. Integrating over whole found strong highly significant evidence for anomalous microwave (AME), level of (1.45+0.17-0.19)Jy peaking frequency ~25GHz. Decomposing into known mechanisms such...
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...
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...
In this paper we investigate the impact of using a polarization modulator in The Short Wavelength Instrument for Polarization Explorer (SWIPE) large scale explorer (LSPE). experiment is optimized to measure linear cosmic microwave background at angular scales during circumpolar long‐duration stratospheric balloon mission, and uses multimode bolometers cooled .3 K. 330 detectors cover three bands 140, 220, 240 GHz. Polarimetry achieved by means rotating half‐wave plate (HWP) single wire‐grid...
[Abridged] The measurement of the polarization Cosmic Microwave Background radiation is one current frontiers in cosmology. In particular, detection primordial B-modes, could reveal presence gravitational waves early Universe. such component at moment most promising technique to probe inflationary theory describing very evolution We present updated performance forecast Large Scale Polarization Explorer (LSPE), a program dedicated CMB polarization. LSPE composed two instruments: Strip,...