Search Results - "PARKER, Lucas"
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A Projected Estimate of the Reionization Optical Depth Using the CLASS Experiment's Sample Variance Limited E-mode Measurement
Published in The Astrophysical journal (20-08-2018)“…We analyze simulated maps of the Cosmology Large Angular Scale Surveyor (CLASS) experiment and recover a nearly cosmic variance limited estimate of the…”
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2
CLASS Angular Power Spectra and Map-component Analysis for 40 GHz Observations through 2022
Published in The Astrophysical journal (01-03-2024)“…Abstract Measurement of the largest angular scale ( ℓ < 30) features of the cosmic microwave background (CMB) polarization is a powerful way to constrain the…”
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3
Cosmology Large Angular Scale Surveyor (CLASS): 90 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
Published in The Astrophysical journal. Supplement series (01-08-2024)“…Abstract The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over ∼75% of the sky from…”
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4
The Mini Astrophysical MeV Background Observatory (MAMBO): A CubeSat for Measuring the MeV Extragalactic Gamma-Ray Background
Published in Pos : proceedings of science (22-07-2019)“…The origin of Extragalactic Background (EGB) light in the 300 keV - 30 MeV energy range is an unsolved question that has persisted for more than 40 years…”
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5
Low Surface Brightness Optical Emission as a Probe of Cosmic Ray Reservoirs
Published in Pos : proceedings of science (23-07-2019)“…New techniques for detecting low surface brightness optical features are emerging that are enabling previous impossible observations. We briefly discuss the…”
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Four-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: On-sky Receiver Performance at 40, 90, 150, and 220 GHz Frequency Bands
Published in The Astrophysical journal (01-02-2022)“…Abstract The Cosmology Large Angular Scale Surveyor (CLASS) observes the polarized cosmic microwave background (CMB) over the angular scales of 1° ≲ θ ≤ 90°…”
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Two Year Cosmology Large Angular Scale Surveyor (CLASS) Observations: Long Timescale Stability Achieved with a Front-end Variable-delay Polarization Modulator at 40 GHz
Published in The Astrophysical journal (01-12-2021)“…Abstract The Cosmology Large Angular Scale Surveyor (CLASS) is a four-telescope array observing the largest angular scales (2≲ ℓ ≲ 200) of the cosmic microwave…”
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Detection of the power spectrum of cosmic microwave background lensing by the Atacama Cosmology Telescope
Published in Physical review letters (05-07-2011)“…We report the first detection of the gravitational lensing of the cosmic microwave background through a measurement of the four-point correlation function in…”
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9
THE ATACAMA COSMOLOGY TELESCOPE: SUNYAEV-ZEL'DOVICH-SELECTED GALAXY CLUSTERS AT 148 GHz IN THE 2008 SURVEY
Published in The Astrophysical journal (20-08-2011)“…We report on 23 clusters detected blindly as Sunyaev-ZEL'DOVICH (SZ) decrements in a 148 GHz, 455 deg2 map of the southern sky made with data from the Atacama…”
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10
Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40 GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
Published in The Astrophysical journal (10-03-2020)“…The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the…”
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11
Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: A Measurement of Circular Polarization at 40 GHz
Published in The Astrophysical journal (01-02-2020)“…We report measurements of circular polarization from the first two years of observation with the 40 GHz polarimeter of the Cosmology Large Angular Scale…”
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12
Two-year Cosmology Large Angular Scale Surveyor (CLASS) Observations: A First Detection of Atmospheric Circular Polarization at Q band
Published in The Astrophysical journal (01-02-2020)“…The Earth's magnetic field induces Zeeman splitting of the magnetic dipole transitions of molecular oxygen in the atmosphere, which produces polarized emission…”
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13
THE ATACAMA COSMOLOGY TELESCOPE: DATA CHARACTERIZATION AND MAPMAKING
Published in The Astrophysical journal (01-01-2013)“…We present a description of the data reduction and mapmaking pipeline used for the 2008 observing season of the Atacama Cosmology Telescope (ACT). The data…”
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14
On-sky Performance of the CLASS Q-band Telescope
Published in The Astrophysical journal (10-05-2019)“…The Cosmology Large Angular Scale Surveyor (CLASS) is mapping the polarization of the cosmic microwave background (CMB) at large angular scales (2 < 200) in…”
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15
Evidence for dark energy from the cosmic microwave background alone using the Atacama Cosmology Telescope lensing measurements
Published in Physical review letters (05-07-2011)“…For the first time, measurements of the cosmic microwave background radiation (CMB) alone favor cosmologies with w = -1 dark energy over models without dark…”
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16
The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectrum at 148 and 218 GHz from the 2008 Southern Survey
Published in The Astrophysical journal (01-03-2011)“…We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148 GHz and 218 GHz, as well as the…”
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17
The Atacama Cosmology Telescope: Physical Properties and Purity of a Galaxy Cluster Sample Selected via the Sunyaev-Zel'dovich Effect
Published in The Astrophysical journal (10-11-2010)“…We present optical and X-ray properties for the first confirmed galaxy cluster sample selected by the Sunyaev-Zel'dovich effect (SZE) from 148 GHz maps over…”
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18
Two-Year Cosmology Large Angular Scale Surveyor (CLASS) Observations: 40GHz Telescope Pointing, Beam Profile, Window Function, and Polarization Performance
Published in The Astrophysical journal (13-03-2020)“…The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the…”
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THE ATACAMA COSMOLOGY TELESCOPE: DETECTION OF SUNYAEV-ZEL'DOVICH DECREMENT IN GROUPS AND CLUSTERS ASSOCIATED WITH LUMINOUS RED GALAXIES
Published in The Astrophysical journal (20-07-2011)“…We present a detection of the Sunyaev-Zel'dovich (SZ) decrement associated with the luminous red galaxy (LRG) sample of the Sloan Digital Sky Survey. The SZ…”
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20
The Atacama B-Mode Search: Instrumentation and Observations
Published 2015“…The Atacama B-Mode Search (ABS) is an experiment designed to probe the physics of the early universe by searching for the signature of gravitational waves in…”
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Dissertation