X-ray and optical variability of Seyfert 1 galaxies as observed with XMM-Newton

X-ray and optical variability of supersoft X-ray sources.

X-ray and optical variability of the ultraluminous X-ray source NGC 1313 X-2

X-ray and Optical Variations in the Classical Be Star gamma Cas

X-Ray and Optical Variations of Scorpius X-1

X-ray and Optical Wavelet Maps in the Central Region of Coma

X-ray and radio bright type Ic SN 2002ap -- a hypernova without an associated GRB

X-ray and Radio Constraints on the Mass of the Black Hole in Swift J164449.3+573451

X-Ray and Radio Emission by Clusters of Galaxies

X-ray and radio emission from clusters of galaxies - The heating of intracluster gas by relativistic electrons

X-ray and radio emission from colliding stellar winds

X-ray and Radio Emission from Stellar Coronae

X-Ray and Radio Emission from UV-Selected Star Forming Galaxies at Redshifts 1.5<Z<3.0 in the GOODS-North Field

X-ray and radio evidence on the origin of a coronal shock wave

X-ray and Radio Interactions in Galaxy Groups and Clusters

X-ray and Radio Interactions in the Cores of Cooling Flow Clusters

X-ray and radio manifestations of a solar eruptive event

X-ray and Radio Monitoring of GX 339-4 and Cyg X-1

X-Ray and Radio Observations of Bright GeV Sources

X-ray and radio observations of RX J1826.2-1450/LS 5039