J. T. Sayre
A5076559726- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Superconducting and THz Device Technology
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Dark Matter and Cosmic Phenomena
- Physics of Superconductivity and Magnetism
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Satellite Communication Systems
- Thermal Radiation and Cooling Technologies
- Advanced Thermodynamic Systems and Engines
- Particle physics theoretical and experimental studies
- Adaptive optics and wavefront sensing
- Astrophysics and Star Formation Studies
- Antenna Design and Optimization
- Advanced Differential Geometry Research
- Radio Frequency Integrated Circuit Design
- Geophysics and Gravity Measurements
- Neutrino Physics Research
- Microwave Engineering and Waveguides
- Advanced Thermodynamics and Statistical Mechanics
- Microwave and Dielectric Measurement Techniques
- Advanced Frequency and Time Standards
Case Western Reserve University
2009-2021
University of Colorado Boulder
2016-2021
Laboratory for Atmospheric and Space Physics
2017-2019
University of Chicago
2009-2018
Kavli Institute for Particle Astrophysics and Cosmology
2016-2018
Argonne National Laboratory
2009-2018
Stanford University
1991-2018
Cardiff University
2012-2018
Lawrence Berkeley National Laboratory
2015
University of California, Berkeley
2012
We present a catalog of galaxy clusters selected via their Sunyaev-Zel'dovich (SZ) effect signature from 2500 deg$^2$ South Pole Telescope (SPT) data. This work represents the complete sample detected at high significance in 2500-square-degree SPT-SZ survey, which was completed 2011. A total 677 (409) cluster candidates are identified above signal-to-noise threshold $\xi$ =4.5 (5.0). Ground- and space-based optical near-infrared (NIR) imaging confirms overdensities similarly colored galaxies...
Gravitational lensing of the cosmic microwave background generates a curl pattern in observed polarization. This "B-mode" signal provides measure projected mass distribution over entire observable Universe and also acts as contaminant for measurement primordial gravity-wave signals. In this Letter we present first detection gravitational B modes, using first-season data from polarization-sensitive receiver on South Pole Telescope (SPTpol). We construct template B-mode by combining E-mode...
We use South Pole Telescope data from 2008 and 2009 to detect the non-Gaussian signature in cosmic microwave background (CMB) produced by gravitational lensing measure power spectrum of projected potential. constrain ratio measured amplitude signal that expected a fiducial ΛCDM cosmological model be 0.86 ± 0.16, with no disfavored at 6.3σ. Marginalizing over models allowed Wilkinson Microwave Anisotropy Probe (WMAP7) results measurement Alens = 0.90 0.19, indicating matter fluctuations...
(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 a catalog of galaxy cluster candidates, selected through their Sunyaev–Zel'dovich (SZ) effect signature in the first 720 deg2 South Pole Telescope (SPT) survey. This area was mapped with SPT 2008 and 2009 austral winters to depth ∼18 μKCMB-arcmin at 150 GHz; 550 it also ∼44 95 GHz. Based on optical imaging all 224 candidates near-infrared majority we have found and/or infrared counterparts for 158, which then classify as confirmed clusters. Of these 158 clusters, 135 were...
We explore extensions to the $\Lambda$CDM cosmology using measurements of cosmic microwave background (CMB) from recent SPT-SZ survey, along with data WMAP7 and $H_0$ BAO. check for consistency within between these datasets, find some tension. The CMB alone gives weak support physics beyond $\Lambda$CDM, due a slight trend relative decreasing power towards smaller angular scales. While it may be statistical fluctuation, this could also explained by several extensions. consider running index...
We use measurements from the South Pole Telescope (SPT) Sunyaev Zel'dovich (SZ) cluster survey in combination with X-ray to constrain cosmological parameters. present a statistical method that fits for scaling relations of SZ and observables mass while jointly fitting cosmology. The is generalizable multiple observables, self-consistently accounts effects selection uncertainties calibration on derived constraints. apply this data set consisting an SZ-selected catalog 18 galaxy clusters at z...
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...
We present measurements of the $E$-mode polarization angular auto-power spectrum ($EE$) and temperature-$E$-mode cross-power ($TE$) cosmic microwave background (CMB) using 150 GHz data from three seasons SPTpol observations. report power spectra over spherical harmonic multipole range $50 < \ell \leq 8000$, detect nine acoustic peaks in $EE$ with high signal-to-noise ratio. These are most sensitive to date $TE$ at $\ell > 1050$ 1475$, respectively. The observations cover 500 deg$^2$, a...
We present first results on the cooling properties derived from Chandra X-ray observations of 83 high-redshift (0.3 < z 1.2) massive galaxy clusters selected by their Sunyaev–Zel'dovich signature in South Pole Telescope data. measure each cluster's central time, entropy, and mass deposition rate, compare these to those for local cluster samples. find no significant evolution ∼ 0 1 distribution properties, suggesting that cores is stable over long periods time. also average cool core entropy...
We present a velocity dispersion-based mass calibration of the South Pole Telescope Sunyaev-Zel'dovich effect survey (SPT-SZ) galaxy cluster sample. Using homogeneously selected sample 100 candidates from 720 deg2 along with 63 dispersion ($\sigma_v$) and 16 X-ray Yx measurements clusters, we simultaneously calibrate mass-observable relation constrain cosmological parameters. The calibrations using $\sigma_v$ are consistent at $0.6\sigma$ level, preferring ~16% higher masses. use full...
We present a measurement of the $B$-mode polarization power spectrum (the $BB$ spectrum) from 100 $\mathrm{deg}^2$ sky observed with SPTpol, polarization-sensitive receiver currently installed on South Pole Telescope. The observations used in this work were taken during 2012 and early 2013 include data spectral bands centered at 95 150 GHz. report five bins multipole space, spanning range $300 \le \ell 2300$, for three combinations: GHz $\times$ GHz, subtract small ($< 0.5 \sigma$ units...
We present a point source catalog from 771 square degrees of the South Pole Telescope Sunyaev Zel'dovich (SPT-SZ) survey at 95, 150, and 220 GHz. detect 1545 sources above 4.5 sigma significance in least one band. Based on their relative brightness between bands, we classify into two populations, dominated by synchrotron emission active galactic nuclei, thermal dust-enshrouded star-forming galaxies. find 1238 307 dusty sources. cross-match all against external catalogs 189 unidentified The...
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 measure the cross-power spectrum of projected mass density as traced by convergence cosmic microwave background lensing field from South Pole Telescope (SPT) and a sample Type 1 2 (unobscured obscured) quasars at 〈z〉 ∼ selected with Wide-field Infrared Survey Explorer, over 2500 deg2. The is detected ≈7σ, we linear bias b = 1.61 ± 0.22, consistent clustering analyses. Using an independent map, derived Planck observations, to cross-spectrum, find excellent agreement SPT analysis. combined...
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...
We compare cosmic microwave background lensing convergence maps derived from South Pole Telescope (SPT) data with galaxy survey the Blanco Cosmology Survey, Wide-field Infrared Survey Explorer, and a new large Spitzer/IRAC field designed to overlap SPT survey. Using optical infrared catalogs covering between 17 68 square degrees of sky, we detect correlation each density at >4 sigma, zero cross-correlation robustly ruled out in all cases. The amplitude shape cross-power spectra are good...
We present optical spectroscopy of galaxies in clusters detected through the Sunyaev–Zel'dovich (SZ) effect with South Pole Telescope (SPT). report our own measurements 61 spectroscopic cluster redshifts, and 48 velocity dispersions each calculated more than 15 member galaxies. This catalog also includes 19 SPT-observed previously reported literature. The majority this paper are SPT-discovered; these, most have been other SPT catalogs, five here as discoveries for first time. By performing a...
We use a temperature map of the cosmic microwave background (CMB) obtained using South Pole Telescope at 150 GHz to construct gravitational convergence z ~ 1100, revealing fluctuations in projected mass density. This shows individual features that are significant 4 sigma level, providing first image CMB lensing convergence. cross-correlate this with Herschel/SPIRE maps covering 90 square degrees wavelengths 500, 350, and 250 microns. show these submillimeter-wavelength (submm) strongly...
Clusters of galaxies are expected to gravitationally lens the cosmic microwave background (CMB) and thereby generate a distinct signal in CMB on arcminute scales. Measurements this effect can be used constrain masses galaxy clusters with data alone. Here we present measurement lensing by using from South Pole Telescope (SPT). We develop maximum likelihood approach extract cluster validate method mock data. quantify effects our analysis several potential sources systematic error find that...
We present a measurement of the cosmic microwave background (CMB) gravitational lensing potential using data from first two seasons observations with SPTpol, polarization-sensitive receiver currently installed on South Pole Telescope (SPT). The used in this work cover 100 deg$^2$ sky arcminute resolution at 150 GHz. Using quadratic estimator, we make maps CMB combinations temperature and polarization maps. combine these to form minimum-variance (MV) map. is measured signal-to-noise ratio...
(Abridged) We present the results of an X-ray analysis 80 galaxy clusters selected in 2500 deg^2 South Pole Telescope survey and observed with Chandra Observatory. divide full sample into subsamples ~20 based on redshift central density, performing fit to all a subsample simultaneously, assuming self-similarity temperature profile. This approach allows us constrain shape profile over 0<r<1.5R500, which would be impossible per-cluster basis, since observations individual have, average, 2000...
In this paper, we describe the optimization of transition-edge-sensor (TES) detector arrays for thirdgeneration camera South Pole Telescope.The camera, which contains ∼16 000 detectors, will make high-angular-resolution maps temperature and polarization cosmic microwave background.Our key results are scatter in transition Ti/Au TESs is reduced by fabricating on a thin Ti(5 nm)/Au(5 nm) buffer layer thermal conductivity legs that support our islands dominated SiOx dielectric microstrip...
Abstract The Planck cosmic microwave background temperature data are best fit with a ΛCDM model that mildly contradicts constraints from other cosmological probes. South Pole Telescope (SPT) 2540 <?CDATA ${\deg }^{2}$?> SPT-SZ survey offers measurements on sub-degree angular scales (multipoles $650\leqslant {\ell }\leqslant 2500$?> ) sufficient precision to use as an independent check of the data. Here we build recent joint analysis and in Hou et al. by comparing parameter estimates using...