X-Ray Optics for Astrophysics: a historical review

TL;DR

This paper reviews the development and impact of grazing-incidence X-ray optics in astrophysics, highlighting technological advances, historical milestones, and future challenges in the field.

Contribution

It provides a comprehensive historical overview of X-ray optics in astrophysics, including fabrication challenges and technological progress from the 1960s to present and future observatories.

Findings

X-ray optics significantly improved astrophysical observations.

Technological advancements enabled high-resolution imaging.

Fabrication challenges have driven innovation in optics technology.

Abstract

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 consequent very large improvement in sensitivity. The X-ray optics also permit use of small-format, high-performance focal plane detectors and, of course, especially for high-angular-resolution optics, provide a wealth of imaging data from extended sources. This review, follows the use of X-ray optics from the first rocket-borne instruments in the 1960s through to the Observatories flying today and being developed for future use. It also includes a brief overview of the challenges of fabricating X-ray optics and the various technologies that have been used to date