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Tuning of Nuclear Spectroscopic Telescope Array (NuSTAR) Application Specific Integrated Circuits (ASICs) to improve low energy threshold of future Hard X-ray Imaging Detectors
Daniel P. Violette, Branden Allen, Jaesub Hong +2
Detector commanding, processing and readout of spaceborne instrumentation is often accomplished with Application Specific Integrated Circuits (ASICs). The ASIC designed for the Nuc…
Testing Station for Fast Screening of Through Silicon Via (TSV)-enabled Application Specific Integrated Circuits (ASICs) for Hard X-ray Imaging Detectors
Daniel P. Violette, Branden Allen, Jaesub Hong +2
Application Specific Integrated Circuits (ASICs) are used in space-borne instruments for signal processing and detector readout. The electrical interface of these ASICs to frontend…
Proof of Concept for Through Silicon Vias (TSVs) in Application Specific Integrated Circuits (ASICs) for Hard X-ray Imaging Detectors
Jaesub Hong, Jonathan Grindlay, Branden Allen +6
Application Specific Integrated Circuits (ASICs) are commonly used to efficiently process the signals from sensors and detectors in space. Wire bonding is a space qualified techniq…
HCF (HREXI Calibration Facility): Mapping out sub-pixel level responses from high resolution Cadmium Zinc Telluride (CZT) imaging X-ray detectors
Arkadip Basak, Branden Allen, Jaesub Hong +2
The High Resolution Energetic X-Ray Imager (HREXI) CZT detector development program at Harvard is aimed at developing tiled arrays of finely pixelated CZT detectors for use in wide…
The Case for Probe-class NASA Astrophysics Missions
Martin Elvis, Jon Arenberg, David Ballantyne +45
Astrophysics spans an enormous range of questions on scales from individual planets to the entire cosmos. To address the richness of 21st century astrophysics requires a correspond…
Big Science with a nUV-MidIR Rapid-Response 1.3m telescope at L2
Jonathan Grindlay, Edo Berger, Brian Metzger +12
Time-domain Astrophysics (TDA), a foundation of Astronomy, has become a major part of current and projected (2020s) astrophysics. While much has been derived from temporal measures…
Historical astronomical data: urgent need for preservation, digitization enabling scientific exploration
Alexei Pevtsov, Elizabeth Griffin, Jonathan Grindlay +16
Over the past decades and even centuries, the astronomical community has accumulated a signif-icant heritage of recorded observations of a great many astronomical objects. Those re…
Imaging Analysis of the Hard X-ray Telescope ProtoEXIST2 and New Techniques for High Resolution Coded Aperture Telescopes
Jaesub Hong, Branden Allen, Jonathan Grindlay +1
Wide-field (> 100 deg) hard X-ray coded-aperture telescopes with high angular resolution (< 2') will enable a wide range of time domain astrophysics. For instance, transient so…
Modeling the Expected Performance of the REgolith X-ray Imaging Spectrometer (REXIS)
Niraj K. Inamdar, Richard P. Binzel, Jae Sub Hong +3
OSIRIS-REx is the third spacecraft in the NASA New Frontiers Program and is planned for launch in 2016. OSIRIS-REx will orbit the near-Earth asteroid (101955) Bennu, characterize i…
Tiled Array of Pixelated CZT Imaging Detectors for ProtoEXIST2 and MIRAX-HXI
Jaesub Hong, Branden Allen, Jonathan Grindlay +7
We have assembled a tiled array (220 cm2) of fine pixel (0.6 mm) imaging CZT detectors for a balloon borne wide-field hard X-ray telescope, ProtoEXIST2. ProtoEXIST2 is a prototype…
The REgolith X-Ray Imaging Spectrometer (REXIS) for OSIRIS-REx: Identifying Regional Elemental Enrichment on Asteroids
Branden Allen, Jonathan Grindlay, Jaesub Hong +10
The OSIRIS-REx Mission was selected under the NASA New Frontiers program and is scheduled for launch in September of 2016 for a rendezvous with, and collection of a sample from the…
The High Resolution X-Ray Imaging Detector Planes for the MIRAX Mission
Barbara H. G. Rodrigues, Jonathan E. Grindlay, Branden Allen +5
The MIRAX X-ray observatory, the first Brazilian-led astrophysics space mission, is designed to perform an unprecedented wide-field, wide-band hard X-ray (5-200 keV) survey of Gala…
Improved Photometry for the DASCH Pipeline
Sumin Tang, Jonathan Grindlay, Edward Los +1
The Digital Access to a Sky Century@Harvard (DASCH) project is digitizing the ~500,000 glass plate images obtained (full sky) by the Harvard College Observatory from 1885-1992. Ast…
The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
Fiona A. Harrison, William W. Craig, Finn E. Christensen +77
The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 13 June 2012, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3…
Opening the 100-Year Window for Time Domain Astronomy
Jonathan Grindlay, Sumin Tang, Edward Los +1
The large-scale surveys such as PTF, CRTS and Pan-STARRS-1 that have emerged within the past 5 years or so employ digital databases and modern analysis tools to accentuate research…
Flight Performance of an advanced CZT Imaging Detector in a Balloon-borne Wide-Field Hard X-ray Telescope - ProtoEXIST1
J. Hong, B. Allen, J. Grindlay +6
We successfully carried out the first high-altitude balloon flight of a wide-field hard X-ray coded-aperture telescope ProtoEXIST1, which was launched from the Columbia Scientific…
ORIGIN: Metal Creation and Evolution from the Cosmic Dawn
J. W. den Herder, L. Piro, T. Ohashi +156
ORIGIN is a proposal for the M3 mission call of ESA aimed at the study of metal creation from the epoch of cosmic dawn. Using high-spectral resolution in the soft X-ray band, ORIGI…
Correcting the Astrometry of DASCH scanned plates
M. Servillat, E. J. Los, J. E. Grindlay +2
We describe the process implemented in the DASCH pipeline which applies a reliable astrometric correction to each scanned plate. Our first blind astrometric fit resolves the pointi…
The DASCH Data Processing Pipeline and Multiple Exposure Plate Processing
Edward Los, Jonathan Grindlay, Sumin Tang +2
Digital Access to a Sky Century @ Harvard (DASCH) is a project to digitize the collection of approximately 525,000 astronomical plates held at the Harvard College Observatory. This…
The Proposed High Energy Telescope (HET) for EXIST
J. Hong, J. Grindlay, B. Allen +10
The hard X-ray sky now being studied by INTEGRAL and Swift and soon by NuSTAR is rich with energetic phenomena and highly variable non-thermal phenomena on a broad range of timesca…
Imaging and burst location with the EXIST high-energy telescope
G. K. Skinner, S. D. Barthelmy, M. H. Finger +5
The primary instrument of the proposed EXIST mission is a coded mask high energy telescope (the HET), that must have a wide field of view and extremely good sensitivity. It will be…
The Soft X-ray Imager on board EXIST
L. Natalucci, A. Bazzano, F. Panessa +11
The Soft X-ray Imager (SXI) is one of the three instruments on board EXIST, a multi-wavelength observatory in charge of performing a global survey of the sky in hard X-rays searchi…
Surveying the Extreme Sky with EXIST
Jonathan E. Grindlay, Lorenzo Natalucci, EXIST Team
The recent hard X-ray surveys performed by INTEGRAL and Swift have started to reveal the demographics of compact sources including Super-Massive Black Holes hosted in AGNs and have…
A Vigorous Explorer Program
Martin Elvis, Matthew Beasley, Roger Brissenden +47
Explorers have made breakthroughs in many fields of astrophysics. The science from both these missions contributed to three Nobel Prizes - Giacconi (2002), Mather, and Smoot (2006)…