Sarah Steiger
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View article: Cross-Model Validation of Coronagraphic Exposure Time Calculators for the Habitable Worlds Observatory: A Report from the Exoplanet Science Yield sub-Working Group
Cross-Model Validation of Coronagraphic Exposure Time Calculators for the Habitable Worlds Observatory: A Report from the Exoplanet Science Yield sub-Working Group Open
Estimating the exoplanet scientific productivity of the Habitable Worlds Observatory requires estimating science exposure times. From exoplanet yields to spectral retrievals, exposure times are at the heart of our understanding of the capa…
View article: Simulated performance of energy-resolving detectors towards exoplanet imaging with the Habitable Worlds Observatory
Simulated performance of energy-resolving detectors towards exoplanet imaging with the Habitable Worlds Observatory Open
One of the primary science goals of the Habitable Worlds Observatory (HWO) as\ndefined by the Astro2020 decadal survey is the imaging of the first Earth-like\nplanet around a Sun-like star. A key technology gap towards reaching this goal\n…
View article: Mid-order wavefront control for exoplanet imaging: preliminary characterization of the segmented deformable mirror and Zernike wavefront sensor on HiCAT
Mid-order wavefront control for exoplanet imaging: preliminary characterization of the segmented deformable mirror and Zernike wavefront sensor on HiCAT Open
We study a mid-order wavefront sensor (MOWFS) to address fine cophasing\nerrors in exoplanet imaging with future large segmented aperture space\ntelescopes. Observing Earth analogs around Sun-like stars requires contrasts\ndown to $10^{-10…
View article: Current laboratory performance of starlight suppression systems, and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities
Current laboratory performance of starlight suppression systems, and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities Open
We summarize the current best polychromatic (10 to 20 % bandwidth) contrast performance demonstrated in the laboratory by different starlight suppression approaches and systems designed to directly characterize exoplanets around nearby sta…
View article: Probing Photon Statistics in Adaptive Optics Images with SCExAO/MEC*
Probing Photon Statistics in Adaptive Optics Images with SCExAO/MEC* Open
We present an experimental study of photon statistics for high-contrast imaging with the Microwave Kinetic Inductance Detector (MKID) Exoplanet Camera (MEC) located behind the Subaru Coronagraphic Extreme Adaptive Optics System at the Suba…
View article: SCExAO and Keck Direct Imaging Discovery of a Low-mass Companion Around the Accelerating F5 Star HIP 5319*
SCExAO and Keck Direct Imaging Discovery of a Low-mass Companion Around the Accelerating F5 Star HIP 5319* Open
We present the direct imaging discovery of a low-mass companion to the nearby accelerating F star, HIP 5319, using SCExAO coupled with the CHARIS, VAMPIRES, and MEC instruments in addition to Keck/NIRC2 imaging. CHARIS JHK (1.1–2.4 μ m) sp…
View article: Probing Photon Statistics in Adaptive Optics Images with SCExAO/MEC
Probing Photon Statistics in Adaptive Optics Images with SCExAO/MEC Open
We present an experimental study of photon statistics for high-contrast imaging with the Microwave Kinetic Inductance Detector (MKID) Exoplanet Camera (MEC) located behind the Subaru Coronagraphic Extreme Adaptive Optics System (SCExAO) at…
View article: SCExAO and Keck Direct Imaging Discovery of a Low-Mass Companion Around the Accelerating F5 Star HIP 5319
SCExAO and Keck Direct Imaging Discovery of a Low-Mass Companion Around the Accelerating F5 Star HIP 5319 Open
We present the direct imaging discovery of a low-mass companion to the nearby accelerating F star, HIP 5319, using SCExAO coupled with the CHARIS, VAMPIRES, and MEC instruments in addition to Keck/NIRC2 imaging. CHARIS $JHK$ (1.1-2.4 $μ$m)…
View article: The MKID Pipeline: A Data Reduction and Analysis Pipeline for UVOIR MKID Data
The MKID Pipeline: A Data Reduction and Analysis Pipeline for UVOIR MKID Data Open
We present the Microwave Kinetic Inductance Detector (MKID) Pipeline, which is a general use science data pipeline for the reduction and analysis of ultraviolet, optical, and infrared MKID data sets. This paper provides an introduction to …
View article: The MKID Science Data Pipeline
The MKID Science Data Pipeline Open
We present The MKID Pipeline, a general use science data pipeline for the reduction and analysis of ultraviolet, optical and infrared (UVOIR) Microwave Kinetic Inductance Detector (MKID) data sets. This paper provides an introduction to th…
View article: Improving the dynamic range of single photon counting kinetic inductance detectors
Improving the dynamic range of single photon counting kinetic inductance detectors Open
We develop a simple coordinate transformation which can be employed to compensate for the nonlinearity introduced by a Microwave Kinetic Inductance Detector's (MKID) homodyne readout scheme. This coordinate system is compared to the canoni…
View article: Flexible Coaxial Ribbon Cable for High-Density Superconducting Microwave Device Arrays
Flexible Coaxial Ribbon Cable for High-Density Superconducting Microwave Device Arrays Open
Superconducting electronics often require high-density microwave interconnects capable of transporting signals between temperature stages with minimal loss, cross talk, and heat conduction. We report the design and fabrication of supercond…
View article: Characterization of sputtered hafnium thin films for high quality factor microwave kinetic inductance detectors
Characterization of sputtered hafnium thin films for high quality factor microwave kinetic inductance detectors Open
Hafnium is an elemental superconductor which crystallizes in a hexagonal close packed structure, has a transition temperature T 400 mK, and has a high normal state resistivity around 90 µ ω cm. In Microwave Kinetic Inductance Detect…
View article: Optical and Near-IR Microwave Kinetic Inductance Detectors (MKIDs) in\n the 2020s
Optical and Near-IR Microwave Kinetic Inductance Detectors (MKIDs) in\n the 2020s Open
Optical and near-IR Microwave Kinetic Inductance Detectors, or MKIDs, are\nsuperconducting photon counting detectors capable of measuring the energy and\narrival time of individual OIR photons without read noise or dark current. In\nthis w…
View article: Optical and Near-IR Microwave Kinetic Inductance Detectors (MKIDs) in the 2020s
Optical and Near-IR Microwave Kinetic Inductance Detectors (MKIDs) in the 2020s Open
Optical and near-IR Microwave Kinetic Inductance Detectors, or MKIDs, are superconducting photon counting detectors capable of measuring the energy and arrival time of individual OIR photons without read noise or dark current. In this whit…