The nuclear spectroscopic telescope array (NuSTAR) high-energy X-ray mission

FA Harrison, WW Craig, FE Christensen… - The Astrophysical …, 2013 - iopscience.iop.org
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 …

Probing the axion–nucleon coupling with the next generation of axion helioscopes

L Di Luzio, J Galan, M Giannotti, IG Irastorza… - The European Physical …, 2022 - Springer
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 …

Compensating film stress in thin silicon substrates using ion implantation

BD Chalifoux, Y Yao, KB Woller, RK Heilmann… - Optics express, 2019 - opg.optica.org
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 …

Investigation of boron carbide and iridium thin films, an enabling technology for future x-ray telescopes

S Massahi, FE Christensen, DDM Ferreira… - Applied Optics, 2020 - opg.optica.org
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 …

X-ray polarimetry with the polarization spectroscopic telescope array (PolSTAR)

HS Krawczynski, D Stern, FA Harrison, FF Kislat… - Astroparticle …, 2016 - Elsevier
This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission
proposed to NASA's 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR …

Supermirror design for hard x-ray telescopes on-board Hitomi (ASTRO-H)

K Tamura, H Kunieda, Y Miyata… - Journal of …, 2018 - spiedigitallibrary.org
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 …

In-flight PSF calibration of the NuSTAR hard X-ray optics

H An, KK Madsen, NJ Westergaard… - … 2014: Ultraviolet to …, 2014 - spiedigitallibrary.org
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 …

Industrialization of the mirror plate coatings for the ATHENA mission

S Massahi, FE Christensen… - Optics for EUV, X …, 2017 - spiedigitallibrary.org
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 …

Improvement of high energy X-ray optical performance of W/Si supermirror by optimizing interface compounds using ultra-thin buffer layer

S Atwal, P Sarkar, K Bhattacharyya, PN Rao, S Rai… - Applied Surface …, 2024 - Elsevier
The high energy spectral properties of X-ray supermirrors are governed mainly by the
interface diffusion and compound formation at the interfaces. Using ion beam sputtering …

Advancements in hard x-ray multilayers for x-ray astronomy

DL Windt - Optics for EUV, X-Ray, and Gamma-Ray Astronomy …, 2015 - spiedigitallibrary.org
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 …