K. Vanderlinde
A5049144785- Radio Astronomy Observations and Technology
- Galaxies: Formation, Evolution, Phenomena
- Cosmology and Gravitation Theories
- Pulsars and Gravitational Waves Research
- Superconducting and THz Device Technology
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Dark Matter and Cosmic Phenomena
- Antenna Design and Optimization
- Microwave Engineering and Waveguides
- Geophysics and Gravity Measurements
- GNSS positioning and interference
- Physics of Superconductivity and Magnetism
- earthquake and tectonic studies
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Calibration and Measurement Techniques
- Particle physics theoretical and experimental studies
- Soil Moisture and Remote Sensing
- Scientific Research and Discoveries
- Infrared Target Detection Methodologies
- Radio Frequency Integrated Circuit Design
- Ionosphere and magnetosphere dynamics
University of Toronto
2015-2024
Canadian Institute for Theoretical Astrophysics
2015-2024
National Radio Astronomy Observatory
2020
Jet Propulsion Laboratory
2020
University of Chicago
2005-2018
Kavli Institute for Particle Astrophysics and Cosmology
2018
Fermi National Accelerator Laboratory
2009-2018
University of Illinois Urbana-Champaign
2018
McGill University
2009-2016
University of the Western Cape
2016
The South Pole Telescope (SPT) is a 10 m diameter, wide-field, offset Gregorian telescope with 966 pixel, multicolor, millimeter-wave, bolometer camera. It located at the Amundsen-Scott station in Antarctica. design of SPT emphasizes careful control spillover and scattering, to minimize noise false signals due ground pickup. key initial project large-area survey wavelengths 3, 2, 1.3 mm, detect clusters galaxies via Sunyaev-Zel'dovich effect measure small-scale angular power spectrum cosmic...
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...
We present a measurement of the angular power spectrum cosmic microwave background (CMB) using data from South Pole Telescope (SPT). The consist 790 deg2 sky observed at 150 GHz during 2008 and 2009. Here we over multipole range 650 < ℓ 3000, where it is dominated by primary CMB anisotropy. combine this with spectra seven-year Wilkinson Microwave Anisotropy Probe (WMAP) release to constrain cosmological models. find that SPT WMAP are consistent each other and, when combined, well fit...
We report on the discovery of eight repeating fast radio burst (FRB) sources found using Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. These span a dispersion measure (DM) range 103.5 to 1281 pc cm$^{-3}$. They display varying degrees activity: six were detected twice, another three times, and one ten times. FRBs likely represent bright and/or high-rate end distribution infrequently sources. For all sources, we determine sky coordinates with uncertainties...
We present a measurement of the cosmic microwave background (CMB) temperature power spectrum using data from recently completed South Pole Telescope Sunyaev–Zel'dovich (SPT-SZ) survey. This is made observations 2540 deg2 sky with arcminute resolution at 150 GHz, and improves upon previous measurements SPT by tripling area. report CMB anisotropy over multipole range 650 < ℓ 3000. fit bandpowers, combined 7 yr Wilkinson Microwave Anisotropy Probe (WMAP7) data, six-parameter ΛCDM cosmological...
We present a catalog of 536 fast radio bursts (FRBs) detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst (CHIME/FRB) Project between 400 and 800 MHz from 2018 July 25 to 2019 1, including 62 18 previously reported repeating sources. The represents first large sample, repeaters non-repeaters, observed in single survey with uniform selection effects. This facilitates comparative absolute studies FRB population. show that apparent non-repeaters have sky locations...
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 report the results of an 87 square-degree point-source survey centered at R.A. 5h30m, decl. -55 deg. taken with South Pole Telescope (SPT) 1.4 and 2.0 mm wavelengths arc-minute resolution milli-Jansky depth. Based on ratio flux in two bands, we separate detected sources into populations, one consistent synchrotron emission from active galactic nuclei (AGN) thermal dust. present source counts for each population 11 to 640 mJy 4.4 800 mm. The are dominated by synchrotron-dominated across...
We present a detection-significance-limited catalog of 21 Sunyaev-Zel'dovich selected galaxy clusters. These clusters, along with 1 unconfirmed candidate, were identified in 178 deg^2 sky surveyed 2008 by the South Pole Telescope to depth 18 uK-arcmin at 150 GHz. Optical imaging from Blanco Cosmology Survey (BCS) and Magellan telescopes provided photometric (and some cases spectroscopic) redshift estimates, redshifts ranging z=0.15 z>1, median z = 0.74. Of confirmed three previously as...
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...
Abstract We report on the discovery and analysis of bursts from nine new repeating fast radio burst (FRB) sources found using Canadian Hydrogen Intensity Mapping Experiment (CHIME) telescope. These span a dispersion measure (DM) range 195–1380 pc cm −3 . detect two three sources, four one source, five source. determine sky coordinates all with uncertainties ∼10′. Faraday rotation measures (RMs) for values −20(1) −499.8(7) rad m −2 , that are substantially lower than RM derived emitted by FRB...
(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...
The Hydrogen Intensity and Real-time Analysis eXperiment (HIRAX) is a new 400-800MHz radio interferometer under development for deployment in South Africa. HIRAX will comprise 1024 six meter parabolic dishes on compact grid map most of the southern sky over course four years. has two primary science goals: to constrain Dark Energy measure structure at high redshift, study transients pulsars. observe unresolved sources neutral hydrogen via their redshifted 21-cm emission line (`hydrogen...
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...
ABSTRACT We present the first three-frequency South Pole Telescope (SPT) cosmic microwave background (CMB) power spectra. The band powers presented here cover angular scales 2000 < ℓ 9400 in frequency bands centered at 95, 150, and 220 GHz. At these frequencies scales, a combination of primary CMB anisotropy, thermal kinetic Sunyaev–Zel'dovich (SZ) effects, radio galaxies, infrared (CIB) contributes to signal. combine Planck /HFI SPT data GHz constrain amplitude shape CIB spectrum find...
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 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...
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a drift scan radio telescope operating across the 400-800 MHz band. CHIME located at Dominion Radio Astrophysical Observatory near Penticton, BC Canada. instrument designed to map neutral hydrogen over redshift range 0.8 2.5 constrain expansion history of Universe. This goal drives design features instrument. consists four parallel cylindrical reflectors, oriented north-south, each 100 m $\times$ 20 and outfitted with 256 element...
We present the discovery of 25 new repeating fast radio burst (FRB) sources found among CHIME/FRB events detected between 2019 September 30 and 2021 May 1. The were using a clustering algorithm that looks for multiple co-located on sky having similar dispersion measures (DMs). repeaters have DMs ranging from $\sim$220 pc cm$^{-3}$ to $\sim$1700 cm$^{-3}$, include exhibited as few two bursts many twelve. report statistically significant difference in both DM extragalactic (eDM) distributions...