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The XMM-Newton view of the Galactic Centre
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle
In X-rays, the Galactic Centre (GC) Region appears as a complex of diffuse thermal and non-thermal X-ray emission intermixed with a population of luminous discrete sources. Here we…
The discovery of a new non-thermal X-ray filament near the Galactic Centre
Masaaki Sakano, Robert S. Warwick, Anne Decourchelle +1
We report the discovery by XMM-Newton and Chandra of a hard extended X-ray source (XMM J174540-2904.5) associated with a compact non-thermal radio filament (the Sgr A-E `wisp'=1LC…
The Remarkably Featureless High Resolution X-ray Spectrum of Mrk 478
Herman L. Marshall, Rick A. Edelson, Simon Vaughan +3
An observation of Mrk 478 using the Chandra Low Energy Transmission Grating Spectrometer is presented. The source exhibited 30-40% flux variations on timescales of order 10000 s to…
A Chandra observation of the interacting pair of galaxies NGC 4485/NGC 4490
T. P. Roberts, R. S. Warwick, M. J. Ward +1
(Abridged) We report the results of a 20 ks Chandra ACIS-S observation of the interacting galaxy pair NGC 4485/4490. A total of 29 discrete X-ray sources are found coincident with…
A New X-Ray Flare from the Galactic Nucleus Detected with the XMM-Newton Photon Imaging Cameras
A. Goldwurm, E. Brion, P. Goldoni +5
Sgr A*, the compact radio source, believed to be the counterpart of the massive black hole at the galactic nucleus, was observed to undergo rapid and intense flaring activity in X-…
High-resolution X-ray imaging and spectroscopy of the core of NGC 4945 with XMM-Newton and Chandra
N. J. Schurch, T. P. Roberts, R. S. Warwick
We utilize the complimentary capabilities of XMM-Newton and Chandra, to conduct a detailed imaging and spectral study of the nearby galaxy NGC 4945 focussing on its nucleus and imm…