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Advanced CCD imaging spectrometer (ACIS) instrument on the Chandra X-ray Observatory
The ACIS instrument has been operating for three years in orbit, producing high quality scientific data on a wide variety of X-ray emitting astronomical objects. Except for a brief period at the veryExpand
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Transiting Exoplanet Survey Satellite (TESS)
The Transiting Exoplanet Survey Satellite (TESS ) will search for planets transiting bright and nearby stars. TESS has been selected by NASA for launch in 2017 as an Astrophysics Explorer mission.Expand
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The High Energy Transient Explorer (HETE): Mission and Science Overview
The High Energy Transient Explorer (HETE ) mission is devoted to the study of gamma‐ray bursts (GRBs) using soft X‐ray, medium X‐ray, and gamma‐ray instruments mounted on a compact spacecraft. TheExpand
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First simultaneous NIR/X-ray detection of a flare from Sgr A
We report on the first simultaneous near-infrared/X-ray detection of the Sgr A* counterpart associated with the massive 3-4 × 10 6 Mblack hole at the center of the Milky Way. The observations haveExpand
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Characterization of the radiation damage in the Chandra x-ray CCDs
Front side illuminated CCDs comprising focal plane of the Chandra X-ray telescope have suffered some radiation damage in the beginning of the mission. Measurements of CTI and dark current atExpand
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Proton damage in X-ray CCDs for space applications: ground evaluation techniques and effects on flight performance
Abstract We report measurements of effects of 2.1 and 40 MeV protons on charge coupled device X-ray detectors of a type soon to be launched on several astronomical research satellites. We discussExpand
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Characterization of the silicon drift detector for NICER instrument
We have studied timing properties of the Amptek Silcon Drift Detectors (SDD) using pulsed X-ray source designed at NASA Goddard Space Flight Center. The proposed Neutron Star Interior CompositionExpand
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X-ray absorption near edge structure in the quantum efficiency of x-ray charge-coupled devices
We perform precise measurements of the x-ray transmission of the thin films comprising CCD gate structure, namely, phosphorus doped polysilicon, silicon dioxide, and silicon nitride. The x-rayExpand
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The Transiting Exoplanet Survey Satellite
The Transiting Exoplanet Survey Satellite (TESS ) will search the solar neighborhood for planets transiting bright stars. TESS has been selected by NASA for launch in 2017 as an Astrophysics ExplorerExpand
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Model of the x-ray response of the ACIS CCD
We have developed a comprehensive model of the response of a CCD to soft x-ray illumination. The model is based on the Monte Carlo technique and follows the interactions with the device material ofExpand
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