S. Henderson

Advanced time-division multiplexed readout chain for the BICEP array 90/150 GHz receiver

Brianna Cantrall, P. A. R. Ade, Z. Ahmed, M. Amiri et autres

This work presents the performance of the advanced time-division multiplexed (TDM) readout chain for the BICEP Array 90/150 GHz receiver. BA4-90/150, deploying to the South Pole in 2026–27, will use photon-noise limited, feedhorn-coupled TES detectors and an upgraded DC SQUID based TDM …

us, gb, ca, fr, is (code pays fourni par la source)

Multiyear wildfire smoke exposure (MultiWiSE) metrics: a data-driven approach to characterizing episodic PM2.5 exposures for epidemiologic research

Stephanie E. Cleland, Olivia Qiong, M. Brauer, S. Henderson

Abstract Background Population exposure to wildfire smoke (WFS) has increased across North America. The health effects of short-term WFS exposure are widely documented, but little is known about longer-term exposures. Most epidemiologic studies use multiyear averages to characterize long-term air pollution exposure, …

ca (code pays fourni par la source)

Heatwaves and PM2.5 from wildfire smoke, non-wildfire sources, and all sources in relation to preterm birth: a nationwide cohort study in Canada

Qingyi Lan, S. Henderson, Eric S. Coker, Naman Paul et autres

With climate change, the frequency and intensity of heatwaves and wildfires are increasing. We examined the independent associations of acute heatwaves and wildfire smoke-impacted particulate matter ≤2.5 µm diameter (PM 2.5 ) with preterm birth outcomes, and their combined effects. We conducted …

ca, pl (code pays fourni par la source)

The Simons Observatory: science goals and forecasts for the enhanced Large Aperture Telescope

M. Abitbol, Irene Abril-Cabezas, S. Adachi, P. A. R. Ade et autres

Abstract We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large Aperture Telescope (LAT) are expected to be complete by 2028, and will include a doubled …

gb, no (code pays fourni par la source)

The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope

S. Adachi, Simone Aiola, T. L. Alford, Rui An et autres

We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large Aperture Telescope (LAT) are expected to be complete by 2028, and will include a doubled mapping …

fr (code pays fourni par la source)

Development of the 220/270 GHz Receiver of BICEP Array

Y. Nakato, Zafar U. Ahmed, Mojtaba Amiri, D. Barkats et autres

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 Galactic foregrounds, which can be distinguished from the …

us, gb, ca, fr (code pays fourni par la source)

End-to-End Modeling of the TDM Readout System for CMB-S4

D. C. Goldfinger, Zeeshan Ahmed, Darcy Barron, W. B. Doriese et autres

us (code pays fourni par la source)

Constraining Inflation with the BICEP/Keck CMB Polarization Experiments

Zeeshan Ahmed, M. Amiri, D. Barkats, R. Basu Thakur et autres

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" polarization of the CMB. Primordial B modes are directly …

gb, us, ca, fr, jp (code pays fourni par la source)

A Modular Time Division Multiplexed Warm Readout System for CMB-S4

Benjamin Reese, Zeeshan Ahmed, D. C. Goldfinger, G. Haller et autres

We present a new system for warm Time Division Multiplexed (TDM) readout of the CMB-S4 microwave background telescopes. The system consists of "Row Address" and "Column Readout" boards which can be grouped together in modular fashion for readout of each detector wafer. …

us (code pays fourni par la source)

BICEP Array: 150 GHz Detector Module Development

A. Schillaci, P. A. R. Ade, Zeeshan Ahmed, M. Amiri et autres

us, gb, ca, fr (code pays fourni par la source)

BICEP/Keck. XVII. Line-of-sight Distortion Analysis: Estimates of Gravitational Lensing, Anisotropic Cosmic Birefringence, Patchy Reionization, and Systematic Errors

P. A. R. Ade, Zeeshan Ahmed, M. Amiri, D. Barkats et autres

Abstract We present estimates of line-of-sight distortion fields derived from the 95 and 150 GHz data taken by BICEP2, BICEP3, and the Keck Array up to the 2018 observing season, leading to cosmological constraints and a study of instrumental and astrophysical systematics. …

gb, us, ca, fr, jp (code pays fourni par la source)

BICEP/Keck. XVI. Characterizing Dust Polarization through Correlations with Neutral Hydrogen

P. A. R. Ade, Zeeshan Ahmed, M. Amiri, D. Barkats et autres

Abstract 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 processes in the interstellar medium (ISM) and the search for …

gb, us, ca, fr, jp (code pays fourni par la source)