X-rays and soft gamma-rays from Seyferts, radio galaxies, and black-hole binaries

X-rays and star formation: ROSAT observations of the Monoceros and Rosette molecular clouds

X-Rays and Type i Supernova Remnants.

X-rays and young clusters

X-rays and young clusters: Membership, IMFs and distances

X-rays and young solar-type stars

X-rays as dominant excitation mechanism of [Fe ii] and H2 emission lines in active galaxies

X-Rays from a New Variable Source GX 1+4

X-rays from a peculiar nucleus galaxy NGC 2196

X-rays from a radio-loud compact BAL Quasar 1045+352 and the nature of outflows in radio-loud BAL Quasars

X-Rays from Accelerated Ion Interactions

X-rays from accretion shocks in T Tauri stars: The case of BP Tau

X-rays from active galactic nuclei - Inverse Compton reflection

X-rays from Alpha Centauri - The darkening of the solar twin

X-Rays From Arp 220 And Its Surroundings

X-rays from Blue Compact Dwarf Galaxies

X-rays from Blue Compact Dwarf Galaxies

X-rays from Cataclysmic Variables

X-rays from cataclysmic variables

X-rays from Cepheus A East and West