Explanipedia

Electrocardiogram sequences data analytics and classification using unsupervised and supervised machine learning algorithms Open

Sami Ghnimi, Pratapa Raju Moola, J. A. Shariff · 2025

This paper explores the prediction of cardiovascular disease (CVD) through the classification of electrocardiogram (ECG) sequences using both supervised and unsupervised machine learning (ML) algorithms. ECG 5000 dataset is considered to p…

In-flight performance of SPIDER's 280 GHz receivers Open

Elle C. Shaw, P. A. R. Ade, Scott Akers, M. Amiri, Jason E. Austermann , et al. · 2024

SPIDER is a balloon-borne instrument designed to map the cosmic microwave background at degree-angular scales in the presence of Galactic foregrounds. Spider has mapped a large sky area in the Southern Hemisphere using more than 2000 trans…

Analysis of Polarized Dust Emission Using Data from the First Flight of SPIDER Open

P. A. R. Ade, M. Amiri, Steven J. Benton, A. S. Bergman, Rick Bihary , et al. · 2024

Using data from the first flight of SPIDER and from Planck HFI, we probe the properties of polarized emission from interstellar dust in the SPIDER observing region. Component separation algorithms operating in both the spatial and harmonic…

In-Flight Gain Monitoring of SPIDER’s Transition-Edge Sensor Arrays Open

J. P. Filippini, A. E. Gambrel, A. Rahlin, E. Young, P. A. R. Ade , et al. · 2022

A Simulation-based Method for Correcting Mode Coupling in CMB Angular Power Spectra Open

Jason S.-Y. Leung, John W. Hartley, Johanna M. Nagy, C. B. Netterfield, J. A. Shariff , et al. · 2022

Modern cosmic microwave background (CMB) analysis pipelines regularly employ complex time-domain filters, beam models, masking, and other techniques during the production of sky maps and their corresponding angular power spectra. However, …

A Constraint on Primordial B-modes from the First Flight of the Spider Balloon-borne Telescope Open

P. A. R. Ade, M. Amiri, Steven J. Benton, A. S. Bergman, R. Bihary , et al. · 2022

We present the first linear polarization measurements from the 2015 long-duration balloon flight of Spider , which is an experiment that is designed to map the polarization of the cosmic microwave background (CMB) on degree angular scales.…

The XFaster Power Spectrum and Likelihood Estimator for the Analysis of Cosmic Microwave Background Maps Open

A. E. Gambrel, A. Rahlin, Xue Song, Carlo Contaldi, P. A. R. Ade , et al. · 2021

We present the XFaster analysis package, a fast, iterative angular power spectrum estimator based on a diagonal approximation to the quadratic Fisher matrix estimator. It uses Monte Carlo simulations to compute noise biases and filter tran…

Design and pre-flight performance of SPIDER 280 GHz receivers Open

E. C. Shaw, P. A. R. Ade, Scott Akers, M. Amiri, Jason E. Austermann , et al. · 2020

In this work we describe upgrades to the Spider balloon-borne telescope in preparation for its second flight, currently planned for December 2021. The Spider instrument is optimized to search for a primordial B-mode polarization signature …

Submillimeter Polarization Spectrum of the Carina Nebula Open

J. A. Shariff, P. A. R. Ade, Francesco E. Angilè, Peter Ashton, Steven J. Benton , et al. · 2019

Linear polarization maps of the Carina Nebula were obtained at 250, 350, and 500 μm during the 2012 flight of the Balloon-borne Large Aperture Submillimeter Telescope for Polarimetry (BLASTPol). These measurements are combined with Planck …

SPIDER: CMB Polarimetry from the Edge of Space Open

R. Gualtieri, J. P. Filippini, P. A. R. Ade, M. Amiri, Steven J. Benton , et al. · 2018

The relation between the column density structures and the magnetic field orientation in the Vela C molecular complex Open

J. D. Soler, P. A. R. Ade, Francesco E. Angilè, Peter Ashton, Steven J. Benton , et al. · 2017

We statistically evaluated the relative orientation between gas column density structures, inferred from Herschel submillimetre observations, and the magnetic field projected on the plane of sky, inferred from polarized thermal emission of…

Optimization of Transition Edge Sensor Arrays for Cosmic Microwave Background Observations With the South Pole Telescope Open

J. Ding, P. A. R. Ade, A. J. Anderson, J. S. Avva, Zeeshan Ahmed , et al. · 2016

In this paper, we describe the optimization of transition-edge-sensor (TES) detector arrays for the third-generation camera for the South Pole Telescope. The camera, which contains ~16 000 detectors, will make high-angular-resolution maps …

Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver Open

C. M. Posada, P. A. R. Ade, A. J. Anderson, J. S. Avva, Zeeshan Ahmed , et al. · 2016

Detectors for cosmic microwave background (CMB) experiments are now essentially background limited, so a straightforward alternative to improve sensitivity is to increase the number of detectors. Large arrays of multichroic pixels constitu…

SUBMILLIMETER POLARIZATION SPECTRUM IN THE VELA C MOLECULAR CLOUD Open

N. N. Gandilo, P. A. R. Ade, Francesco E. Angilè, Peter Ashton, Steven J. Benton , et al. · 2016

Polarization maps of the Vela C molecular cloud were obtained at 250, 350, and 500 μ m during the 2012 flight of the balloon-borne telescope BLASTPol. These measurements are used in conjunction with 850 μ m data from Planck to study the su…

Comparing submillimeter polarized emission with near-infrared polarization of background stars for the Vela C molecular cloud Open

Fábio P. Santos, P. A. R. Ade, Francesco E. Angilè, Peter Ashton, Steven J. Benton , et al. · 2016

We present a large-scale combination of near-infrared (near-IR) interstellar polarization data from background starlight with polarized emission data at submillimeter (sub-mm) wavelengths for the Vela C molecular cloud. The near-IR data co…

A cryogenic rotation stage with a large clear aperture for the half-wave plates in the Spider instrument Open

Sean Bryan, P. A. R. Ade, M. Amiri, Steven J. Benton, R. Bihary , et al. · 2016

We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the cosmic microwave background at 95 GHz and 150 GHz during a stratospheric b…

Polarimetry from the stratosphere with SPIDER and BLASTPol Open

J. A. Shariff · 2015

This thesis presents the hardware development and flight performance of two balloon-borne experiments. The Spider experiment is a millimetre-wavelength polarimeter designed to measure B-mode polarization in the Cosmic Microwave Background …

A cryogenic rotation stage with a large clear aperture for a half-wave plate Open

Sean Bryan, P. A. R. Ade, M. Amiri, Steven J. Benton, R. Bihary , et al. · 2015

We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the Cosmic Microwave Background at 95 GHz and 150 GHz during a stratospheric b…

The thermal design, characterization, and performance of the S pider long-duration balloon cryostat Open

Jon E. Gudmundsson, P. A. R. Ade, M. Amiri, Steven J. Benton, J. Böck , et al. · 2015

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