ROSAT High-Resolution Imager monitoring of extreme X-ray variability in the narrow-line quasar PHL 1092

W. N. Brandt, Mateusz Ruszkowski(University of Michigan), A. C. Fabian(Institute of Astronomy), T. Boller(Max Planck Institute for Extraterrestrial Physics)
Monthly Notices of the Royal Astronomical Society
March 11, 1999
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