We report the Chandra detection of O VII Kα absorption at z = 0 in the direction of the z = 0.03 Seyfert 1 galaxy Mkn 279. The high velocity cloud Complex C lies along this line of sight, with H i 21-cm emission and O VI 1032Å absorption both observed at velocities of ∼ −150 km s relative to the local standard of rest. We present an improved method for placing limits on the Doppler parameter an...

On 1 January 1999 eleven EUMember States adopted a new currency – the euro. The introduction of the euro was a remarkable feat in the history of European monetary, financial, economic and political integration. It was an event of world significance. Many sceptics had predicted that Economic and Monetary Union (EMU) would never take place or, if it were created, would quickly collapse. In the fi...

Multifrequency polarimetry with the VLBA confirms the previously reported timevarying Faraday rotation measure (RM) in the quasar 3C 279. Variability in the RM and electric vector position angle (EVPA) of the jet component (C4) is seen making it an unreliable absolute EVPA calibrator. 3C 273 is also shown to vary its RM structure on 1.5 year time-scales. Variation in the RM properties of quasar...