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We present an XMM-Newton observation of NGC 7469, including studies of theX-ray and UV variability, 0.2-10 keV spectral continuum, Fe K-alpha emissionline and the first-ever high-resolution X-ray spectrum of the soft X-ray warmabsorber. We compare the properties of this X-ray warm absorber with the UVwarm absorber as seen in a FUSE observation one year previously. The 0.2-10 keVspectral continuum is best fitted by a power-law plus two blackbody model. AnFe K-alpha emission line is visible which consists of a single narrow componentand is well-modelled by a simple gaussian. Narrow absorption and emission linesin the soft X-ray RGS spectrum demonstrate the existence of a multi-phase warmabsorber with a range in log xi of ~ 2 to ~ -2 where xi is in erg cm s^-1. Thewarm absorber is blueshifted by several hundred km s^-1. The highest-ionisationphase of the absorber is the best constrained and has an overall equivalentHydrogen column of order 10^20 cm^-2; we find that its ionisation parameter isconsistent with that of the warm emitter which generates the narrow emissionlines. We identify this high ionisation absorber with the low-velocity phase ofthe UV absorber observed by FUSE.Comment: 12 pages, 12 figures, accepted by A&A, a companion paper to  "Multiwavelength studies of the Seyfert 1 galaxy NGC7469. I - Far UV  observations with FUSE" by Kriss et al., astro-ph/030255

Multiwavelength studies of the Seyfert 1 galaxy NGC 7469 II. X-ray and UV observations with XMM-Newton