X ray luminosity and spectral variability of a complete sample of AGN's

X ray measurements at the South Atlantic Magnetic Anomaly

X ray microbursts and VLF chorus

X ray microbursts in the South Atlantic magnetic anomaly

X ray microcalorimeters: Principles and performance

X ray microscope/telescope test and alignment

X ray morphology and the mass of clusters of galaxies

X ray morphology of clusters of galaxies

X ray nova GS 2000+25 = Nova VUL 1988: X ray and optical light curves, spectra, and model

X Ray Observations of Classical and recurrent Novae in Outburst

X ray observations of gamma ray burst sources

X ray observations of GS2023+338 by the KVANT module

X ray observations of late-type stars using the ROSAT all-sky survey

X ray observations of SS433 and its jets

X ray observations of the LMC field by the TTM instrument onboard the KVANT module: November 1988 to June 1989

X ray opacity in cluster cooling flows

X ray polarization of the reprocessed emission from accretion disk in Seyfert galaxies

X Ray Precursors in GRBs and SGRs: outer X tails around a Precessing Gamma Jet

X Ray Precursors in SGRs: Precessing Gamma Jet Tails

X ray radiographic imaging of hydrodynamic phenomena in radiation driven materials: Shock propagation, material compression and shear flow