X-ray absorption spectroscopy study on the effect of hydroxybenzoic acids on the formation and structure of ferrihydrite

X-Ray Activity in M-Type Giants

X-ray activity in young substellar objects: A brown dwarf binary in Cha I

X-ray analysis of the close binary system FO 15

X-ray and gamma-ray astronomy with NTD germanium-based microcalorimeters

X-ray and gamma-ray observations of solar flares by GRANAT

X-Ray and Gamma-Ray Spectrometer Observations of the Elemental Composition of the Equatorial Region of Mercury: Testing Formation Models

X-ray and GeV Flares in GRB Light Curves

X-Ray and Infrared Emission from Young Stellar Objects near LkHα101

X-ray and Infrared Surveys of Star-Forming Regions

X-ray and Near-Infrared Observations of the Black Hole Candidate GX 339-4

X-Ray and Optical Observations of Nova MUSCAE 1983 during its Nebular Stage

X-Ray and Optical Observations of the Pulsar NP 0532 in the Crab Nebula

X-ray and Optical Studies of SAX J1808.4-3658 in Quiescence

X-Ray and Radio Emission of the Galactic Supernova Remnant G7.7-3.7

X-ray and radio observations in the initial development of an X-class solar flare

X-ray and UV Photometry of the Partially Eclipsing Dwarf Nova V893 Sco

X-ray astronomy

X-ray astronomy experiments from sounding rockets

X-ray background studies with Ariel 5 and Copernicus observations of the X-ray source: OAO1653-40