Search Results - "Guan, Yilun"
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1
The Atacama Cosmology Telescope: Microwave Intensity and Polarization Maps of the Galactic Center
Published in The Astrophysical journal (01-10-2021)“…Abstract We present arcminute-resolution intensity and polarization maps of the Galactic center made with the Atacama Cosmology Telescope. The maps cover a 32…”
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2
The Atacama Cosmology Telescope: Detection of Millimeter-wave Transient Sources
Published in The Astrophysical journal (01-07-2021)“…We report on the serendipitous discovery of three transient millimeter-wave sources using data from the Atacama Cosmology Telescope. The first, detected at…”
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3
The Atacama Cosmology Telescope: Mitigating the Impact of Extragalactic Foregrounds for the DR6 Cosmic Microwave Background Lensing Analysis
Published in The Astrophysical journal (01-05-2024)“…Abstract We investigate the impact and mitigation of extragalactic foregrounds for the cosmic microwave background (CMB) lensing power spectrum analysis of…”
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4
The Atacama Cosmology Telescope: A Search for Planet 9
Published in The Astrophysical journal (01-12-2021)“…We use Atacama Cosmology Telescope (ACT) observations at 98 GHz (2015–2019), 150 GHz (2013–2019), and 229 GHz (2017–2019) to perform a blind shift-and-stack…”
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5
The Atacama Cosmology Telescope: Systematic Transient Search of 3 Day Maps
Published in The Astrophysical journal (01-10-2023)“…Abstract We conduct a systematic search for transients in 3 yr of data (2017–2019) from the Atacama Cosmology Telescope (ACT). ACT covers 40% of the sky at…”
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6
The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies
Published in Monthly notices of the Royal Astronomical Society (01-01-2021)“…We construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with the Atacama Cosmology Telescope…”
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7
Topics in Microwave Astronomy and Cosmology
Published 01-01-2021“…Over the past decades, precision measurements of the Cosmic Microwave Background (CMB) have led to remarkable progress in our understanding of the universe in…”
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Dissertation -
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The Atacama Cosmology Telescope: r eionization kSZ trispectrum methodology and limits
Published in Monthly notices of the Royal Astronomical Society (27-07-2024)“…ABSTRACT Patchy reionization generates kinematic Sunyaev–Zel’dovich (kSZ) anisotropies in the cosmic microwave background (CMB). Large-scale velocity…”
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9
The Atacama Cosmology Telescope: reionization kSZ trispectrum methodology and limits
Published in Monthly notices of the Royal Astronomical Society (01-08-2024)“…ABSTRACT Patchy reionization generates kinematic Sunyaev–Zel’dovich (kSZ) anisotropies in the cosmic microwave background (CMB). Large-scale velocity…”
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10
The thermal and non-thermal components within and between galaxy clusters Abell 399 and Abell 401
Published in Monthly notices of the Royal Astronomical Society (09-11-2022)“…ABSTRACT We measure the local correlation between radio emission and Compton-y signal across two galaxy clusters, Abell 399 and Abell 401, using maps from the…”
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11
Constraining Cosmic Microwave Background Temperature Evolution With Sunyaev–Zel’Dovich Galaxy Clusters from the Atacama Cosmology Telescope
Published in The Astrophysical journal (01-12-2021)“…The Sunyaev–Zel’dovich (SZ) effect introduces a specific distortion of the blackbody spectrum of the cosmic microwave background(CMB) radiation when it…”
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12
The Atacama Cosmology Telescope: Mitigating the impact of extragalactic foregrounds for the DR6 CMB lensing analysis
Published in The Astrophysical journal (2024)“…We investigate the impact and mitigation of extragalactic foregrounds for the CMB lensing power spectrum analysis of Atacama Cosmology Telescope (ACT) data…”
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13
Constraining Cosmic Microwave Background Temperature Evolution With Sunyaev–Zel’Dovich Galaxy Clusters from the Atacama Cosmology Telescope
Published in The Astrophysical journal (26-11-2021)“…Here, the Sunyaev–Zel'dovich (SZ) effect introduces a specific distortion of the blackbody spectrum of the cosmic microwave background (CMB) radiation when it…”
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Journal Article -
14
The Atacama Cosmology Telescope: a CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies
Published in Monthly notices of the Royal Astronomical Society (10-11-2020)“…In this work, we construct cosmic microwave background lensing mass maps using data from the 2014 and 2015 seasons of observations with the Atacama Cosmology…”
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15
Distinguishing Primordial Magnetic Fields from Inflationary Tensor Perturbations in the Cosmic Microwave Background
Published 11-05-2022“…A claimed detection of cosmological tensor perturbations from inflation via B-mode polarization of the cosmic microwave background requires distinguishing…”
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16
Computing Microwave Background Polarization Power Spectra from Cosmic Birefringence
Published 28-11-2021“…We present a new publicly available code, $\texttt{class_rot}$, which modifies $\texttt{class}$ to enable fast non-perturbative calculation of cosmic microwave…”
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17
Efficient estimation of rotation-induced bias to reconstructed CMB lensing power spectrum
Published 24-08-2024“…The cosmic microwave background (CMB) lensing power spectrum is a powerful probe of the late-time universe, encoding valuable information about cosmological…”
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18
Impact of Anisotropic Birefringence on Measuring Cosmic Microwave Background Lensing
Published 17-01-2023“…The power spectrum of cosmic microwave background lensing is a powerful tool for constraining fundamental physics such as the sum of neutrino masses and the…”
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19
Simons Observatory: Observatory Scheduler and Automated Data Processing
Published 16-06-2024“…The Simons Observatory (SO) is a next-generation ground-based telescope located in the Atacama Desert in Chile, designed to map the cosmic microwave background…”
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20
Can small-scale baryon inhomogeneities resolve the Hubble tension? An investigation with ACT DR4
Published 10-08-2021“…Phys. Rev. D 104, 063535 (2021) Small-scale inhomogeneities in the baryon density around recombination have been proposed as a solution to the tension between…”
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