Cover Illustration

Upper left


The Crab nebula as observed with the High-Energy Transmission Grating Spectrometer (HETG) onboard NASA's Chandra X-ray Observatory (Becker, Fig. 1a, page 51).

Upper right


The young supernova remnant Cas-A as seen by the High-Resolution Imager (HRI) on the German X-ray space observatory ROSAT (Becker, Fig. 1d, page 51).

Lower left


A visualization of astrophysical jets according to a 3D magnetohydrodynamic model of active galactic nuclei (AGN) (Uchida et al., Fig.\ 1a, page 221).

Lower right


A cusped, flaring magnetic loop observed on the solar limb by the Soft X-ray Telescope onboard the Japanese satellite Yohkoh, which is a mission of the Japanese Institute for Space and Astronautical Science.