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X-Ray Optics for Astrophysics: a historical review
Finn E. Christensen, Brian D. Ramsey
Grazing-incidence X-ray optics have revolutionized X-ray astrophysics. The ability to concentrate flux to a tiny detection region provides a dramatic reduction in background and a…
Observational Artifacts of NuSTAR: Ghost Rays and Stray Light
Kristin K. Madsen, Finn E. Christensen, William W. Craig +5
The Nuclear Spectroscopic Telescope Array (NuSTAR), launched in June 2012, flies two conical approximation Wolter-I mirrors at the end of a 10.15m mast. The optics are coated with…
X-Ray Polarimetry with the Polarization Spectroscopic Telescope Array (PolSTAR)
Henric S. Krawczynski, Daniel Stern, Fiona A. Harrison +49
This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission proposed to NASA's 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR measures…
Calibration of the NuSTAR High Energy Focusing X-ray Telescope
Kristin K. Madsen, Fiona A. Harrison, Craig B. Markwardt +19
We present the calibration of the \textit{Nuclear Spectroscopic Telescope Array} (\nustar) X-ray satellite. We used the Crab as the primary effective area calibrator and constructe…
In-flight PSF calibration of the NuSTAR hard X-ray optics
Hongjun An, Kristin K. Madsen, Niels J. Westergaard +7
We present results of the point spread function (PSF) calibration of the hard X-ray optics of the Nuclear Spectroscopic Telescope Array (NuSTAR). Immediately post-launch, NuSTAR ha…
The Hot and Energetic Universe: The Optical Design of the Athena+ Mirror
Richard Willingale, Giovanni Pareschi, Finn Christensen +1
The Athena+ X-ray mirror will provide a collecting area of 2 m^2 at 1 keV and an angular resolution of 5 arc seconds Half Energy Width. The manufacture and performance of this mirr…