A5055173833- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Astronomy and Astrophysical Research
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Stellar, planetary, and galactic studies
- Superconducting and THz Device Technology
- Astrophysical Phenomena and Observations
- Particle physics theoretical and experimental studies
- Geophysics and Gravity Measurements
- Astrophysics and Star Formation Studies
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
- Computational Physics and Python Applications
- Solar and Space Plasma Dynamics
- Antenna Design and Optimization
- Relativity and Gravitational Theory
- Underwater Acoustics Research
- Pulsars and Gravitational Waves Research
- Field-Flow Fractionation Techniques
- Black Holes and Theoretical Physics
- Space Science and Extraterrestrial Life
- Geophysical Methods and Applications
Commonwealth Scientific and Industrial Research Organisation
2020-2025
Astronomy and Space
2021-2025
The University of Melbourne
2019-2023
Max Planck Institute for Extraterrestrial Physics
2016-2020
Excellence Cluster Origins
2020
Ludwig-Maximilians-Universität München
2015-2019
Excellence Cluster Universe
2015-2019
(abridged) We present cosmological constraints obtained from galaxy clusters identified by their Sunyaev-Zel'dovich effect signature in the 2500 square degree South Pole Telescope Sunyaev Zel'dovich survey. consider 377 cluster candidates at z>0.25 with a detection significance greater than five, corresponding to 95% purity threshold for compute on models using measured abundance as function of mass and redshift. include additional multi-wavelength observations, including Chandra X-ray data...
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 derive cosmological constraints using a galaxy cluster sample selected from the 2500~deg$^2$ SPT-SZ survey. The spans redshift range $0.25< z<1.75$ and contains 343 clusters with SZ detection significance $\xi>5$. is supplemented optical weak gravitational lensing measurements of 32 $0.29<z<1.13$ (from Magellan HST) X-ray 89 $0.25<z<1.75$ Chandra). rely on minimal modeling assumptions: i) provides an accurate means measuring halo masses, ii) mean observables are related to true mass...
We cross-match galaxy cluster candidates selected via their Sunyaev–Zel'dovich effect (SZE) signatures in 129.1 deg2 of the South Pole Telescope 2500d SPT-SZ survey with optically identified clusters from Dark Energy Survey science verification data. identify 25 between 0.1 ≲ z 0.8 union and redMaPPer (RM) samples. RM is an optical finding algorithm that also returns a richness estimate for each cluster. model λ-mass relation following function 〈ln λ|M500〉 ∝ Bλln M500 + Cλln E(z) use masses...
Abstract We present a measurement of the cosmic microwave background lensing potential using 500 deg 2 150 GHz data from SPTpol receiver on South Pole Telescope. The is reconstructed with signal-to-noise per mode greater than unity at multipoles L ≲ 250, quadratic estimator combination temperature and polarization maps. report measurements power spectrum in multipole range 100 < 2000 sets temperature-only ( T ), polarization-only (POL), minimum-variance (MV) estimators. measure amplitude...
We estimate total mass (M500), intracluster medium (ICM) (MICM), and stellar (M⋆) in a Sunyaev–Zel'dovich effect (SZE) selected sample of 91 galaxy clusters with masses M500 ≳ 2.5 × 1014 M⊙ redshift 0.2 < z 1.25 from the 2500 |$\deg ^2$| South Pole Telescope SPT-SZ survey. The are estimatedfrom SZE observable, ICM MICM obtained analysis Chandra X-ray observations, M⋆ derived by fitting spectral energy distribution templates to Dark Energy Survey griz optical photometry WISE or Spitzer...
We report a B-mode power spectrum measurement from the cosmic microwave background (CMB) polarization anisotropy observations made using SPTpol instrument on South Pole Telescope. This work uses 500 deg$^2$ of data, five-fold increase over last release. As result, bandpower uncertainties have been reduced by more than factor two, and extends to lower multipoles: $52 < \ell 2301$. Data both 95 150 GHz are used, allowing for three cross-spectra: x GHz, GHz. is detected at very high...
We perform a joint analysis of the counts redMaPPer clusters selected from Dark Energy Survey (DES) Y1 data and multi-wavelength follow-up collected within 2500 deg$^2$ South Pole Telescope (SPT) SZ survey. The SPT data, calibrating richness--mass relation optically catalog, enable cosmological exploitation DES cluster abundance data. To explore possible systematics related to modeling projection effects, we consider two calibrations observational scatter on richness estimates: simple...
Abstract We present cosmological constraints based on the cosmic microwave background (CMB) lensing potential power spectrum measurement from recent 500 deg 2 SPTpol survey, most precise CMB ground to date. fit a flat ΛCDM model reconstructed alone and in addition with other data sets: baryon acoustic oscillations (BAO), as well primary spectra Planck . The band powers are good agreement when analyzed combination full-sky data. With weak priors density parameters, provide 4% constraint...
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...
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...
We present the results of an X-ray spectral analysis 153 galaxy clusters observed with Chandra, XMM-Newton, and Suzaku space telescopes. These clusters, which span 0 < z 1.5, were drawn from a larger, mass-selected sample discovered in 2500 square degree South Pole Telescope Sunyaev Zel'dovich (SPT-SZ) survey. With total combined exposure time 9.1 Ms, these data yield strongest constraints to date on evolution metal content intracluster medium (ICM). find no evidence for strong global...
ABSTRACT We present a detection of the splashback feature around galaxy clusters selected using Sunyaev–Zel’dovich (SZ) signal. Recent measurements optically have found that radius, rsp, is smaller than predicted by N-body simulations. A possible explanation for this discrepancy rsp inferred from observed radial distribution galaxies affected selection effects related to optical cluster-finding algorithms. test possibility measuring in via SZ effect data South Pole Telescope survey and...
We present a catalog of galaxy cluster candidates detected in 100 square degrees surveyed with the SPTpol receiver on South Pole Telescope. The contains 89 signal-to-noise ratio greater than 4.6. are selected using Sunyaev-Zel'dovich effect at 95 and 150 GHz. Using both space- ground-based optical infrared telescopes, we have confirmed 81 as clusters. use these follow-up images archival to estimate photometric redshifts for 66 clusters spectroscopic observations obtain 13 systems. An...
Our current understanding of the Universe is established through pristine measurements structure in cosmic microwave background (CMB) and distribution shapes galaxies tracing large scale (LSS) Universe. One key ingredient that underlies cosmological observables field sources observed assumed to be initially Gaussian with high precision. Nevertheless, a minimal deviation from Gaussianityis perhaps most robust theoretical prediction models explain Universe; itis necessarily present even...
Inflation may provide unique insight into the physics at highest available energy scales that cannot be replicated in any realistic terrestrial experiment. Features primordial power spectrum are generically predicted a wide class of models inflation and its alternatives, observationally one most overlooked channels for finding evidence non-minimal inflationary models. Constraints from observations cosmic microwave background cover widest range feature frequencies, but sensitive constraints...
The authors report on a search for cosmic birefringence in region of the southern sky, with South Pole Telescope. They reconstruct map polarization rotation anisotropies and measure angular power spectrum map, finding it to be consistent zero. This non detection is used place constraints strength primordial magnetic fields coupling constant electromagnetic Chern-Simons term.
We describe the observations and resultant galaxy cluster catalog from 2770 deg2 SPTpol Extended Cluster Survey (SPT-ECS). Clusters are identified via Sunyaev–Zel'dovich (SZ) effect confirmed with a combination of archival targeted follow-up data, making particular use data Dark Energy (DES). With incomplete we have as clusters 244 266 candidates at detection significance ξ ≥ 5 an additional 204 systems 4 < 5. The sample has median mass redshift z = 0.49, 44 strong gravitational lenses in...
Our current understanding of the Universe is established through pristine measurements structure in cosmic microwave background (CMB) and distribution shapes galaxies tracing large scale (LSS) Universe. One key ingredient that underlies cosmological observables field sources observed assumed to be initially Gaussian with high precision. Nevertheless, a minimal deviation from Gaussianityis perhaps most robust theoretical prediction models explain Universe; itis necessarily present even...
Abstract We perform the first simultaneous Bayesian parameter inference and optimal reconstruction of gravitational lensing cosmic microwave background (CMB), using 100 deg 2 polarization observations from SPTpol receiver on South Pole Telescope. These data reach noise levels as low 5.8 μ K arcmin in polarization, which are enough that typically used quadratic estimator (QE) technique for analyzing CMB is significantly suboptimal. Conversely, procedure extracts all information at any level....
We present a detailed study of the galaxy cluster thermal Sunyaev–Zel'dovich effect (SZE) signal Y and pressure profiles using Magneticum Pathfinder hydrodynamical simulations. With sample 50 000 clusters (M500c > 1.4 × 1014 M⊙) out to z = 2, we find significant variations in shape profile with mass redshift new generalized NFW (Navarro–Frenk–White) model that follows these trends. show at R500c accounts for only 80 per cent required maintain hydrostatic equilibrium, therefore even idealized...
We study the galaxy populations in 74 Sunyaev Zeldovich Effect (SZE) selected clusters from South Pole Telescope (SPT) survey that have been imaged science verification phase of Dark Energy Survey (DES). The sample extends up to $z\sim 1.1$ with $4 \times 10^{14} M_{\odot}\le M_{200}\le 3\times 10^{15} M_{\odot}$. Using band containing 4000~\AA\ break and its redward neighbor, we color-magnitude distributions cluster galaxies $\sim m_*+2$, finding: (1) intrinsic rest frame $g-r$ color width...
We present the first results from a galaxy population study in highest redshift clusters identified 2500 deg 2 South Pole Telescope Sunyaev Zel’dovich effect (SPT-SZ) survey, which is sensitive to M 500 ≳ 3 × 10 14 ⊙ z ∼ 0.2 out redshifts where such massive structures exist. The cluster selection order independent of properties, making SPT-SZ sample particularly well suited for studies. carried four-band imaging campaign with Hubble and Spitzer Space Telescopes five 1.4, S / N SZE > 5...