X-ray spectroscopic instrumentation for the 21st century

X-Ray Structure of Lensing Clusters

X-Ray Structure of Lensing Clusters

X-Ray Structure of Lensing Clusters

X-Ray Structures in and around Powerful Radio Sources

X-ray studies of quasars with the Einstein Observatory. III The 3CR sample

X-ray study of the likely PWN associated with a new VHE gamma-ray source

X-ray Study of the Massive Cluster SpARCS J0035-4312 at z=1.335

X-ray Survey of Centaurus A

X-ray timing of Active Galaxies

X-Ray Variability in the Jet and Core of M87

X-Ray Variability in the Jet and Core of M87

X-ray, UV, Optical and NIR Observations of Aql X-1

X-ray-Emitting Hypernova Remnants in M101: Relics of Gamma-Ray Bursts?

X-ray/FUV Absorption Line Spectroscopy of Warm-hot Gas around the Galaxy

X-raying strong gravitational lenses: dark halos and the environment

X-rays from Sources 3C 273 and M 87

X-Rays, Dust, Ice, and Gas in Time (X-DIGIT)

X-Rays, Dust, Ice, and Gas in Time (X-DIGIT)

X-Rays, Dust, Ice, and Gas in Time (X-DIGIT)