X-ray and gamma-ray Emissioons from Galactic Black Hole candidates: Observations and Theories

X-ray and infrared selected AGN. II - Optical spectroscopy

X-ray and Microwave Studies of Solar Flares and Magnetic Reconnection: New Results from YOHKOH and Nobeyama

X-ray and Molecular Emission from the TW Hya Association

X-ray and Optical Observations of 55/PTempel-Tuttle

X-ray and Optical Observations of Naked Seyfert 2 Galaxies

X-ray and optical observations of the magnetic cataclysmic variables

X-ray and Optical Observations of the Merging Cluster Abell S1063.

X-ray and Optical Observations of the Supernova Remnant CTB1

X-ray and optical studies of extragalactic X-ray emitters

X-ray and Optical Studies of Low--Mass Star Formation

X-Ray and Optical Study of the Supernova Remnant W44

X-ray And Polarization Data: Clues To Particle Acceleration In Extragalactic Jets

X-ray and UV Observations of the Luminous Narrow-line Seyfert 1 Galaxies RX J0439.7-4540 and PHL 1092

X-Ray Astronomy Discovery Experiments, II

X-ray astronomy of the Sun

X-ray astrophysics of compact objects

X-ray binaries as indicators of SN explosions

X-Ray Binaries as Probes of Stellar Evolution and Compact Objects

X-ray binaries in nearby galaxies: The link between binary populations and galactic properties.