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View article: BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes
BICEP/Keck XIX: Extremely Thin Composite Polymer Vacuum Windows for BICEP and Other High Throughput Millimeter Wave Telescopes Open
Millimeter-wave refracting telescopes targeting the degree-scale structure of the cosmic microwave background (CMB) have recently grown to diffraction-limited apertures of over 0.5 meters. These instruments are entirely housed in vacuum cr…
View article: Calibration Measurements of the BICEP3 and BICEP Array CMB Polarimeters from 2017 to 2024
Calibration Measurements of the BICEP3 and BICEP Array CMB Polarimeters from 2017 to 2024 Open
The BICEP3 and BICEP Array polarimeters are small-aperture refracting telescopes located at the South Pole designed to measure primordial gravitational wave signatures in the Cosmic Microwave Background (CMB) polarization, predicted by inf…
View article: Development of the 220/270 GHz Receiver of BICEP Array
Development of the 220/270 GHz Receiver of BICEP Array Open
Measurements of B-mode polarization in the CMB sourced from primordial gravitational waves would provide information on the energy scale of inflation and its potential form. To achieve these goals, one must carefully characterize the Galac…
View article: Life Cycle Assessment of the Athena X-ray Integral Field Unit
Life Cycle Assessment of the Athena X-ray Integral Field Unit Open
The X-ray Integral Field Unit (X-IFU) is the high-resolution X-ray spectrometer to fly on board the Athena Space Observatory of the European Space Agency (ESA). It is being developed by an international Consortium led by France, involving …
View article: Proceedings of the 58th Rencontres de Moriond on Cosmology 2024
Proceedings of the 58th Rencontres de Moriond on Cosmology 2024 Open
The BICEP/$\textit{Keck}$ (BK) series of cosmic microwave background (CMB) polarization experiments has, over the past decade and a half, produced a series of field-leading constraints on cosmic inflation via measurements of the "B-mode" p…
View article: Results and Limits of Time Division Multiplexing for the BICEP Array High Frequency Receivers
Results and Limits of Time Division Multiplexing for the BICEP Array High Frequency Receivers Open
Time-Division Multiplexing is the readout architecture of choice for many groundand space experiments, as it is a very mature technology with proven outstandinglow-frequency noise stability, which represents a central challenge in multiple…
View article: BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen
BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen Open
We characterize Galactic dust filaments by correlating BICEP/Keck and Planck data with polarization templates based on neutral hydrogen (H i ) observations. Dust polarization is important for both our understanding of astrophysical process…
View article: The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase Open
The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile observatory designed to address the Hot and Energetic Univers…
View article: Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole
Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole Open
The BICEP3 Polarimeter is a small aperture, refracting telescope, dedicated to the observation of the Cosmic Microwave Background (CMB) at 95GHz. It is designed to target degree angular scale polarization patterns, in particular the very-m…
View article: 2022 upgrade and improved low frequency camera sensitivity for CMB observation at the South Pole
2022 upgrade and improved low frequency camera sensitivity for CMB observation at the South Pole Open
Constraining the Galactic foregrounds with multi-frequency Cosmic Microwave Background (CMB) observations is an essential step towards ultimately reaching the sensitivity to measure primordial gravitational waves (PGWs), the sign of inflat…
View article: The Latest Constraints on Inflationary B-modes from the BICEP/Keck Telescopes
The Latest Constraints on Inflationary B-modes from the BICEP/Keck Telescopes Open
For the past decade, the BICEP/Keck collaboration has been operating a series of telescopes at the Amundsen-Scott South Pole Station measuring degree-scale $B$-mode polarization imprinted in the Cosmic Microwave Background (CMB) by primord…
View article: Bicep/Keck XV: The Bicep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set
Bicep/Keck XV: The Bicep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set Open
We report on the design and performance of the B icep3 instrument and its first three-year data set collected from 2016 to 2018. B icep3 is a 52 cm aperture refracting telescope designed to observe the polarization of the cosmic microwave …
View article: Plastic Laminate Antireflective Coatings for Millimeter-wave Optics in BICEP Array
Plastic Laminate Antireflective Coatings for Millimeter-wave Optics in BICEP Array Open
The BICEP/Keck series of experiments target the Cosmic Microwave Background at degree-scale resolution from the South Pole. Over the next few years, the "Stage-3" BICEP Array (BA) telescope will improve the program's frequency coverage and…
View article: BICEP / Keck XV: The BICEP3 CMB Polarimeter and the First Three Year\n Data Set
BICEP / Keck XV: The BICEP3 CMB Polarimeter and the First Three Year\n Data Set Open
We report on the design and performance of the BICEP3 instrument and its\nfirst three-year data set collected from 2016 to 2018. BICEP3 is a 52cm\naperture, refracting telescope designed to observe the polarization of the\ncosmic microwave…
View article: A demonstration of improved constraints on primordial gravitational waves with delensing
A demonstration of improved constraints on primordial gravitational waves with delensing Open
We present a constraint on the tensor-to-scalar ratio, $r$, derived from measurements of cosmic microwave background (CMB) polarization $B$-modes with "delensing,'' whereby the uncertainty on $r$ contributed by the sample variance of the g…
View article: Analysis of Temperature-to-Polarization Leakage in BICEP3 and Keck CMB Data from 2016 to 2018
Analysis of Temperature-to-Polarization Leakage in BICEP3 and Keck CMB Data from 2016 to 2018 Open
The BICEP/Keck Array experiment is a series of small-aperture refracting\ntelescopes observing degree-scale Cosmic Microwave Background polarization from\nthe South Pole in search of a primordial $B$-mode signature. As a pair\ndifferencing…
View article: Receiver development for BICEP Array, a next-generation CMB polarimeter at the South Pole
Receiver development for BICEP Array, a next-generation CMB polarimeter at the South Pole Open
A detection of curl-type ($B$-mode) polarization of the primary CMB would be\ndirect evidence for the inflationary paradigm of the origin of the Universe.\nThe BICEP/Keck Array (BK) program targets the degree angular scales, where the\npow…
View article: Polarization Calibration of the BICEP3 CMB polarimeter at the South Pole
Polarization Calibration of the BICEP3 CMB polarimeter at the South Pole Open
The BICEP3 CMB Polarimeter is a small-aperture refracting telescope located at the South Pole and is specifically designed to search for the possible signature of inflationary gravitational waves in the Cosmic Microwave Background (CMB). T…
View article: Receiver development for BICEP Array, a next-generation CMB polarimeter at the South Pole
Receiver development for BICEP Array, a next-generation CMB polarimeter at the South Pole Open
A detection of curl-type ($B$-mode) polarization of the primary CMB would be direct evidence for the inflationary paradigm of the origin of the Universe. The BICEP/Keck Array (BK) program targets the degree angular scales, where the power …
View article: Sub-Kelvin Cooling for the BICEP Array Project
Sub-Kelvin Cooling for the BICEP Array Project Open
In the field of astrophysics, the faint signal from distant galaxies and other dim cosmological sources at millimeter and submillimeter wavelengths require the use of high-sensitivity experiments. Cryogenics and the use of low-temperature …
View article: BICEP2/Keck Array XI: Beam Characterization and Temperature-to-Polarization Leakage in the BK15 Data Set
BICEP2/Keck Array XI: Beam Characterization and Temperature-to-Polarization Leakage in the BK15 Data Set Open
Precision measurements of cosmic microwave background (CMB) polarization require extreme control of instrumental systematics. In a companion paper we have presented cosmological constraints from observations with the BICEP2 and Keck Array …
View article: LiteBIRD: An All-Sky Cosmic Microwave Background Probe of Inflation
LiteBIRD: An All-Sky Cosmic Microwave Background Probe of Inflation Open
The Litebird mission will map polarized fluctuations in the cosmic microwave background (CMB) to search for the signature of gravitational waves from inflation, potentially opening a window on the Universe a fraction of a second after the …