Abstract Imaging X-ray Polarimetry Explorer (IXPE) is a Small Explorer mission by NASA
and Agenzia Spaziale Italiana, launched on 2021 December 9, dedicated to investigating X …

Clusters of galaxies are the most massive gravitationally bound objects in the Universe and
are still forming. They are thus important probes of cosmological parameters and many …

Previous generations of X-ray observatories revealed a group of massive binaries that were
relatively bright X-ray emitters. This was attributed to emission of shock-heated plasma in the …

The X-ray Integral Field Unit (X-IFU) on board the Advanced Telescope for High-ENergy
Astrophysics (Athena) will provide spatially resolved high-resolution X-ray spectroscopy …

The basic unified model of active galactic nuclei (AGNs) invokes an anisotropic obscuring
structure, usually referred to as a torus, to explain AGN obscuration as an angle-dependent …

The Hitomi (ASTRO-H) mission is the sixth Japanese x-ray astronomy satellite developed by
a large international collaboration, including Japan, USA, Canada, and Europe. The mission …

We present the overall design and performance of the Astro-H (Hitomi) Soft X-Ray
Spectrometer (SXS). The instrument uses a 36-pixel array of x-ray microcalorimeters at the …

High spectral resolution with a resolving power, E/Δ E\gtrsim 1000 E/Δ E≳ 1000 at 6 keV, is
now available in X-ray astronomy. X-ray observations are particularly effective for plasma …

Atomic data and plasma models play a crucial role in the diagnosis and interpretation of
astrophysical spectra, thus influencing our understanding of the Universe. In this …

The Hitomi (ASTRO-H) mission is the sixth Japanese X-ray astronomy satellite developed by
a large international collaboration, including Japan, USA, Canada, and Europe. The mission …