ABSTRACT The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on
2012 June 13, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in …

A finite axion–nucleon coupling, nearly unavoidable for QCD axions, leads to the production
of axions via the thermal excitation and subsequent de-excitation of 57 Fe isotopes in the …

Future space telescopes, especially X-ray telescopes, will require thin mirrors to achieve
high optical throughput. Thin mirrors are more difficult to fabricate than thick mirrors, but …

This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission
proposed to NASA's 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR …

We designed depth-graded multilayers, so-called supermirrors, with platinum/carbon (Pt/C)
layer pairs for the Hard X-Ray Telescope (HXT) that was on-board the sixth Japanese X-Ray …

We present an experimental examination of iridium and boron carbide thin-film coatings for
the purpose of fabricating x-ray optics. We use a combination of x-ray reflectometry and x-ray …

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 …

In the frame of the development of the Advanced Telescope for High-ENergy Astrophysics
(Athena) mission, currently in phase A, ESA is continuing to mature the optics technology …

This paper is focused on recent progress in the development of broad-band multilayer
coatings designed for hard X-ray energies, for use in future astronomical telescopes. We …

X-ray reflective coating for next generation's lightweight, high resolution optics for astronomy
requires thin-film deposition that is precisely fine-tuned so that it will not distort the thin sub …