X-ray pulsars from supernova explosions

X-ray reflection from cold matter in the nuclei of active galaxies

X-ray reflectivity and mechanical stress in W/Si multilayers deposited on thin substrates of glass, epoxy-replicated aluminum foil, and SI wafer

X-ray remote sensing and in-situ spectroscopy for planetary exploration missions and gamma-ray remote sensing and in-situ spectroscopy for planetary exploration missions

X-ray scanning of overhead aurorae from rockets

X-ray scattering polarimetry with scintillating fibers of different materials

X-ray selected AGN in a Merging Cluster Environment

X-ray selected ROSAT AGN spectra (Grupe+, 1999)

X-ray selected Type-2 QSOs -- Their Mid-Infrared Properties and Physical Nature

X-ray selected Type-2 QSOs: ongoing star formation and obscured accretion.

X-ray Signatures of Accretion in AGNs with Intermediate-mass Black Holes

X-ray sources <1 degree from Seyfert galaxies (Radecke 1997)

X-ray spectra of accretion discs with dynamic coronae

X-ray spectra of the most X-ray luminous radio-quiet RBS-QSOs

X-ray spectral analyses of the M87 jet

X-ray spectral analysis of C-COSMOS sources

X-ray Spectral Characterization of a Complete Sample of Swift BAT AGNs

X-ray Spectral Characterization of a Complete Sample of Swift BAT AGNs

X-ray spectral characterization of optically selected narrow-line Seyfert 1 gal

X-ray spectral properties of CYG X-1