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.