activity
20242026
most citedBICEP/Keck XVIII: Measurement of BICEP3 polarization angles and consequences for constraining cosmic birefringence and inflation

1 citations · 1 across the 9 of their papers we have counts for

collaborators

12 papers

astro-ph.CO2026

Quantifying the systematic impact of differential beam response on the BICEP CMB polarization data from 2016 through 2024

B. D. Elwood, P. A. R. Ade, Z. Ahmed +83

As cosmic microwave background (CMB) polarization experiments, including BICEP3, BICEP Array, and future BICEP experiments, achieve ever-deeper polarization maps in search of primo…

astro-ph.IM2026

Optics and broadband anti-reflection coatings for the BA4-90/150 receiver

A. R. Polish, P. A. R. Ade, Z. Ahmed +84

The BICEP Array telescopes search for primordial B-mode polarization from inflationary gravitational waves. This signal is exceedingly faint, demanding excellent map depth and syst…

astro-ph.IM2026

Overview and status of BICEP Array's BA4-90/150 CMB polarimeter

M. A. Petroff, P. A. R. Ade, Z. Ahmed +83

The inflation paradigm postulates a period of rapid expansion in the early Universe, which would generate gravitational waves. These tensor perturbations would produce a faint B-mo…

astro-ph.CO2026

Controlling instrumental systematics for the BICEP inflation survey

C. Vergès, P. A. R. Ade, Z. Ahmed +92

The BICEP series of experiments has been observing CMB polarisation from the South Pole for over 20 years, with the goal of constraining inflationary gravitational waves. The upcom…

astro-ph.CO2026

BICEP/Keck XXI: Constraints on Early-Universe Parity Violation from Multipole-Dependent Birefringence

Keck Collaboration, P. A. R. Ade, Zeeshan Ahmed +94

We present the first constraints on multipole-dependent cosmic birefringence using CMB polarization data from the BK18 dataset, which combines observations from BICEP2, Keck Array,…

astro-ph.CO2025

The Simons Observatory: forecasted constraints on primordial gravitational waves with the expanded array of Small Aperture Telescopes

The Simons Observatory Collaboration, I. Abril-Cabezas, S. Adachi +479

We present updated forecasts for the scientific performance of the degree-scale (0.5 deg FWHM at 93 GHz), deep-field survey to be conducted by the Simons Observatory (SO). By 2027,…

astro-ph.IM2025

Improved Absolute Polarization Calibrator for BICEP CMB Polarimeters

A. R. Polish, P. A. R. Ade, Z. Ahmed +89

Cosmic birefringence is a hypothesized parity violation in electromagnetism that predicts a frequency-independent polarization rotation as light propagates. This would rotate the l…

astro-ph.CO2025

BICEP/Keck XX: Component-separated maps of polarized CMB and thermal dust emission using Planck and BICEP/Keck Observations through the 2018 Observing Season

Keck Collaboration, P. A. R. Ade, Z. Ahmed +94

We present component-separated polarization maps of the cosmic microwave background (CMB) and Galactic thermal dust emission, derived using data from the BICEP/Keck experiments thr…

astro-ph.CO2024★ 1 cited

BICEP/Keck XVIII: Measurement of BICEP3 polarization angles and consequences for constraining cosmic birefringence and inflation

Keck Collaboration, P. A. R. Ade, Z. Ahmed +83

We use a custom-made calibrator to measure individual detectors' polarization angles of BICEP3, a small aperture telescope observing the cosmic microwave background (CMB) at 95GHz…

astro-ph.CO2024

Calibration Measurements of the BICEP3 and BICEP Array CMB Polarimeters from 2017 to 2024

Christos Giannakopoulos, Clara Vergès, P. A. R. Ade +83

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 Cosmi…

astro-ph.IM2024

Development of the 220/270 GHz Receiver of BICEP Array

Keck Collaboration, Y. Nakato, P. A. R. Ade +82

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 ach…

astro-ph.CO2024

Constraining Inflation with the BICEP/Keck CMB Polarization Experiments

Keck Collaboration, P. A. R. Ade, Z. Ahmed +84

The BICEP/ (BK) series of cosmic microwave background (CMB) polarization experiments has, over the past decade and a half, produced a series of field-leading constra…