XMM-Newton Reflection Grating Spectrometer

TL;DR

The paper reviews the XMM-Newton Reflection Grating Spectrometer's principles, performance, and scientific impact, highlighting its role in advancing high-resolution X-ray astronomy and providing guidance on data reduction techniques.

Contribution

It offers a comprehensive overview of the RGS instrument, its calibration, and data analysis methods, emphasizing its significance in astrophysical research.

Findings

High-resolution spectra in soft X-ray band enable detailed astrophysical studies

Excellent calibration quality facilitates precise measurements

Data reduction techniques are essential for extracting scientific insights

Abstract

The past two decades have witnessed the rapid growth of our knowledge of the X-ray Universe thanks to flagship X-ray space observatories like XMM-Newton and Chandra. A significant portion of discoveries would have been impossible without the X-ray diffractive grating spectrometers aboard these two space observatories. We briefly overview the physical principles of diffractive grating spectrometers as the background to the beginning of a new era with the next-generation (diffractive and non-diffractive) high-resolution X-ray spectrometers. This chapter focuses on the Reflection Grating Spectrometer aboard XMM-Newton, which provides high-quality high-resolution spectra in the soft X-ray band. Its performance and excellent calibration quality have allowed breakthrough advancements in a wide range of astrophysical topics. For the benefit of new learners, we illustrate how to reduce RGS imaging, timing, and spectral data.