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XMM-Newton EPIC observations of the ultraluminous X-ray source NGC 5204 X-1
T. P. Roberts, R. S. Warwick, M. J. Ward +2
We present the results of two XMM-Newton observations of the ultraluminous X-ray source (ULX) NGC 5204 X-1. The EPIC spectra are well-fit by the standard spectral model of a black-…
Is the slope of the intrinsic Baldwin effect constant?
M. R. Goad, K. T. Korista, C. Knigge
We investigate the relationship between emission-line strength and continuum luminosity in the best-studied nearby Seyfert 1 galaxy NGC5548. Our analysis of 13 years of ground-base…
What the Optical Recombination Lines Can Tell Us About the Broad Line Regions of Active Galactic Nuclei
Kirk T. Korista, Michael R. Goad
We investigate the effect of a global change in the ionizing continuum level on the behavior of the strong optical broad emission-lines seen in spectra of the nuclear emission-line…
Chandra observations of five ultraluminous X-ray sources in nearby galaxies
T. P. Roberts, R. S. Warwick, M. J. Ward +1
We report the results of a programme of dual-epoch Chandra ACIS-S observations of five ultraluminous X-ray sources (ULXs) in nearby spiral galaxies. All five ULXs are detected as u…