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Discovery of a binary AGN in the ultraluminous infrared galaxy NGC 6240 using Chandra
Stefanie Komossa, Vadim Burwitz, Guenther Hasinger +3
Ultraluminous infrared galaxies (ULIRGs) are outstanding due to their huge luminosity output in the infrared, which is predominantly powered by super starbursts and/or hidden activ…
The thermal radiation of the isolated neutron star RX J1856.5-3754 observed with Chandra and XMM-Newton
V. Burwitz, F. Haberl, R. Neuhaeuser +3
We present results of the analysis of data collected in 57-ks XMM-Newton and 505-ks Chandra observations of the nearby ~= 120 pc isolated neutron star RX J1856.5-3754. We confirm m…
1ES 1927+654: Persistent and rapid X-ray variability in an AGN with low intrinsic neutral X-ray absorption and narrow optical emission lines
Th. Boller, W. Voges, M. Dennefeld +7
We present X-ray and optical observations of the X-ray bright AGN 1ES 1927+654. The X-ray observations obtained with ROSAT and Chandra reveal persistent, rapid and large scale vari…