R. Gualtieri
A5078079098- Radio Astronomy Observations and Technology
- Superconducting and THz Device Technology
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Cosmic Phenomena
- Radio Frequency Integrated Circuit Design
- Astronomy and Astrophysical Research
- Particle physics theoretical and experimental studies
- Physics of Superconductivity and Magnetism
- Adaptive optics and wavefront sensing
- Computational Physics and Python Applications
- Geophysics and Gravity Measurements
- Cephalopods and Marine Biology
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Advanced Thermodynamic Systems and Engines
- Photonic and Optical Devices
- Infrared Target Detection Methodologies
- Physiological and biochemical adaptations
- Calibration and Measurement Techniques
- Microwave Engineering and Waveguides
- CCD and CMOS Imaging Sensors
- Inertial Sensor and Navigation
- Meteorological Phenomena and Simulations
Fermi National Accelerator Laboratory
2025
University of Illinois Urbana-Champaign
2016-2024
Cardiff University
2020-2024
Northwestern University
2024
Argonne National Laboratory
2021-2023
Association of Research Libraries
2023
Case Western Reserve University
2020
Sapienza University of Rome
2012-2016
Arcetri Astrophysical Observatory
2015
Istituto di Fotonica e Nanotecnologie
2015
We present the science case, reference design, and project plan for Stage-4 ground-based cosmic microwave background experiment CMB-S4.
We present measurements of the $E$-mode ($EE$) polarization power spectrum and temperature-$E$-mode ($TE$) cross-power cosmic microwave background using data collected by SPT-3G, latest instrument installed on South Pole Telescope. This analysis uses observations a $1500\text{ }\text{ }{\mathrm{deg}}^{2}$ region at 95, 150, 220 GHz taken over four-month period in 2018. report binned values $EE$ $TE$ spectra angular multipole range $300\ensuremath{\le}\ensuremath{\ell}<3000$, multifrequency...
Abstract CMB-S4—the next-generation ground-based cosmic microwave background (CMB) experiment—is set to significantly advance the sensitivity of CMB measurements and enhance our understanding origin evolution universe. Among science cases pursued with CMB-S4, quest for detecting primordial gravitational waves is a central driver experimental design. This work details development forecasting framework that includes power-spectrum-based semianalytic projection tool, targeted explicitly toward...
We present a sample-variance-limited measurement of the temperature power spectrum ($TT$) cosmic microwave background using observations $\ensuremath{\sim}1500\text{ }\text{ }{\mathrm{deg}}^{2}$ field made by SPT-3G in 2018. report multifrequency measurements at 95, 150, and 220 GHz covering angular multipole range $750\ensuremath{\le}\ensuremath{\ell}<3000$. combine this $TT$ with published polarization from 2018 observing season update their associated covariance matrix to complete...
SPT-3G is the third survey receiver operating on South Pole Telescope dedicated to high-resolution observations of cosmic microwave background (CMB). Sensitive measurements temperature and polarization anisotropies CMB provide a powerful dataset for constraining cosmology. Additionally, surveys with arcminute-scale resolution are capable detecting galaxy clusters, millimeter-wave bright galaxies, variety transient phenomena. The instrument provides significant improvement in mapping speed...
Abstract We present the first linear polarization measurements from 2015 long-duration balloon flight of Spider , which is an experiment that designed to map cosmic microwave background (CMB) on degree angular scales. The results these include maps and power spectra observations 4.8% sky at 95 150 GHz, along with internal consistency tests data. While polarized CMB anisotropy primordial density perturbations dominant signal in this region sky, Galactic dust emission also detected high...
Abstract We present component-separated maps of the primary cosmic microwave background/kinematic Sunyaev–Zel’dovich (SZ) amplitude and thermal SZ Compton- y parameter, created using data from South Pole Telescope (SPT) Planck satellite. These maps, which cover ∼2500 deg 2 southern sky imaged by SPT-SZ survey, represent a significant improvement over previous such products available in this region virtue their higher angular resolution ( <?CDATA $1\buildrel{\,\prime}\over{.} 25$?> <mml:math...
We present a measurement of gravitational lensing over 1500 deg2 the Southern sky using SPT-3G temperature data at 95 GHz and 150 taken in 2018. The amplitude relative to fiducial Planck 2018 Lambda cold dark matter (ΛCDM) cosmology is found be 1.020±0.060, excluding instrumental astrophysical systematic uncertainties. conduct extensive null tests check robustness measurements, report minimum-variance combined power spectrum angular multipoles 50<L<2000, which we use constrain cosmological...
In recent years, the lack of a conclusive detection WIMP dark matter at 10 GeV/c$^{2}$ mass scale and above has encouraged development low-threshold detector technology aimed probing lighter candidates. Detectors based on Cooper-pair-breaking sensors have emerged as promising avenue for this due to low (meV-scale) energy required breaking Cooper pair in most superconductors. Among them, devices superconducting qubits are interesting candidates sensing their observed sensitivity broken pairs....
Abstract Using data from the first flight of Spider and Planck High Frequency Instrument, we probe properties polarized emission interstellar dust in observing region. Component-separation algorithms operating both spatial harmonic domains are applied to their consistency quantify modeling errors associated with assumptions. Analyses diffuse Galactic spanning full region demonstrate (i) a spectral energy distribution that is broadly consistent modified-blackbody (MBB) model index β d = 1.45...
Abstract We present the detection and characterization of fluctuations in linearly polarized emission from atmosphere above South Pole. These measurements make use data SPT-3G receiver on Pole Telescope three frequency bands centered at 95, 150, 220 GHz. cross-correlation between detectors to produce an unbiased estimate power Stokes I , Q U parameters large angular scales. Our results are consistent with signal being produced by combination Rayleigh scattering thermal radiation ground a...
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...
We infer the mean optical depth of a sample optically-selected galaxy clusters from Dark Energy Survey (DES) via pairwise kinematic Sunyaev-Zel'dovich (kSZ) effect. The kSZ signal between pairs drawn DES Year-3 cluster catalog is detected at $4.1 \sigma$ in cosmic microwave background (CMB) temperature maps two years observations with SPT-3G camera on South Pole Telescope. After cuts, there are 24,580 $\sim 1,400$ deg$^2$ southern sky observed by both experiments. techniques. inferred...
Ultralight axionlike particles (ALPs) are compelling dark matter candidates because of their potential to resolve small-scale discrepancies between $\Lambda$CDM predictions and cosmological observations. Axion-photon coupling induces a polarization rotation in linearly polarized photons traveling through an ALP field; thus, as the local field oscillates time, distant static sources will appear oscillate with frequency proportional mass. We use observations cosmic microwave background from...
Abstract We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera South Pole Telescope. The cover separate regions of 1500, 2650, and 6000 deg 2 to different depths, in total observing 25% sky. These will be measured white noise levels roughly 2.5, 9, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mn>12</mml:mn> <mml:mspace width="0.33em"/> <mml:mi>μ</mml:mi> <mml:mi...
The detection of satellite thermal emission at millimeter wavelengths is presented using data from the 3rd-Generation receiver on South Pole Telescope (SPT-3G). This represents first reported artificial satellites wavelengths. Satellite shown to be detectable high signal-to-noise timescales as short a few tens milliseconds. An algorithm for downloading orbital information and tracking known given observer constraints time-ordered observatory pointing described. Consequences cosmological...
We describe 280 GHz bolometric detector arrays that instrument the balloon-borne polarimeter spider. A primary science goal of spider is to measure large-scale B-mode polarization cosmic microwave background (cmb) in search cosmic-inflation, gravitational-wave signature. channels aid this by constraining level contamination from galactic dust emission. present focal plane unit design, which consists a 16x16 array conical, corrugated feedhorns coupled monolithic fabricated on 150 mm diameter...
[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,...
Abstract We present a flare star catalog from 4 yr of nontargeted millimeter-wave survey data the South Pole Telescope (SPT). The were taken with SPT-3G camera and cover 1500 deg 2 region sky 20 h 40 m 0 s to 3 in right ascension −42° −70° declination. This was observed on nearly daily cadence 2019 2022 chosen avoid plane galaxy. A short-duration transient search this yields 111 flaring events 66 stars, increasing number both detected stars by an order magnitude previous release. provide...