E
Edward J. Wollack
Researcher at Goddard Space Flight Center
Publications - 794
Citations - 109859
Edward J. Wollack is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Cosmic microwave background & Atacama Cosmology Telescope. The author has an hindex of 104, co-authored 732 publications receiving 102070 citations. Previous affiliations of Edward J. Wollack include Raytheon & West Chester University of Pennsylvania.
Papers
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Proceedings ArticleDOI
Electrothermal characterization of AlMn transition-edge sensor bolometers for advanced ACTPol
Kevin T. Crowley,Jason E. Austermann,Shannon M. Duff,Patricio A. Gallardo,Gene C. Hilton,Johannes Hubmayr,Sara M. Simon,Suzanne T. Staggs,Joel N. Ullom,Edward J. Wollack +9 more
TL;DR: In this paper, the authors report on measurements of TES bolometers designed for the Advanced ACTPol (AdvACT) upgrade to the Atacama Cosmology Telescope (ACT) using a three-stage SQUID amplifier chain, time division multiplexing electronics, and an external signal generator.
Patent
Phase-controlled magnetic mirror, mirror system, and methods of using the mirror
TL;DR: A phase-controllable magnetic mirror, system, and method of use were described in this article, where the unit cells change their dielectric constant based on an applied voltage such that cells incident photons having a first phase and re-emit photons having another, different phase.
Proceedings ArticleDOI
The bidirectional reflectance of black silicon used in space and Earth remote sensing applications
Georgi T. Georgiev,James J. Butler,Ron Shiri,Christine A. Jhabvala,Edward J. Wollack,Elena Georgieva +5 more
TL;DR: In this article, the authors describe the initial work of characterizing representative black materials used in coronagraph instruments and other spaceborne instruments and provide the spectral range from 400nm to 2500nm using 8o directional hemispherical measurements.
Proceedings ArticleDOI
Optical properties of astronomical silicates
Stephen A. Rinehart,Dominic J. Benford,E. Dwek,Ross Henry,Joseph A. Nuth,Robert F. Silverberg,Edward J. Wollack +6 more
TL;DR: The OPASI-T project as discussed by the authors uses two spectrometers to provide extinction data for silicate samples across a wide wavelength range (from the near infrared to the millimeter).
Proceedings ArticleDOI
Waveguide photonic choke joint with wide out-of-band rejection
Kongpop U-Yen,Edward J. Wollack +1 more
TL;DR: In this article, a photonic choke joint structure with a wide stop-band was proposed for use as a waveguide flange interface, which consists of arrays of square metal pillars arranged in a periodic pattern to suppress the dominantmode wave propagation in parallel-plate waveguide over a wide frequency bandwidth.