X-ray absorption and rapid variability of the dwarf Seyfert nucleus of NGC4395

X-ray absorption and re-emission from an ionised outflow in the Type 1 QSO 2MASS 234449+1221

X-ray Absorption and Reflection in Active Galactic Nuclei

X-Ray Absorption and the Galactic ISM

X-Ray Absorption and the Post-Auger Decay Spectrum of Multielectron Atoms

X-Ray Absorption Associated with High-Velocity UV Absorbers

X-ray absorption by Broad Line Region Clouds in Mrk 766

X-ray absorption by ionized oxygen in ASCA spectra of the infrared quasar IRAS 13349+2438

X-Ray Absorption by the Hot Intergalactic Medium

X-ray Absorption by the Low-redshift Intergalactic Medium: A Numerical Study of the Lambda CDM model

X-Ray Absorption By WHIM in the Sculptor Wall

X-ray Absorption Due to Cold Gas in Cluster Cooling Cores

X-ray absorption effects due to intergalactic abundance of carbon

X-Ray Absorption Events in Cygnus X-1 Observed with Copernicus

X-Ray Absorption from the Milky Way Halo and the Local Group

X-ray absorption in Active Galactic Nuclei

X-ray absorption in active galaxies - Constraints on the broad-line emitting regions

X-ray absorption in Compton-thin AGN: the predictions of a model revisited

X-ray absorption in distant type II QSOs

X-ray Absorption in Radio-Quiet QSOs