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An X-ray/optical study of IXOs (2001)
Journal Article
Roberts, T., Goad, M., Ward, M., Warwick, R., O'Brien, P., Lira, P., & Hands, A. (2001). An X-ray/optical study of IXOs. Bulletin of the American Astronomical Society, 33, 858-

Identifying X-ray Sources in Bulge and Disk Galaxies (2001)
Journal Article
Prestwich, A., Kilgard, R., Krauss, M., Kaaret, P., Zezas, A., McDowell, J., …Trinchieri, G. (2001). Identifying X-ray Sources in Bulge and Disk Galaxies. Bulletin of the American Astronomical Society, 33, 1338-

The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1 (2001)
Journal Article
Roberts, T., Goad, M., Ward, M., Warwick, R., O'Brien, P., Lira, P., & Hands, A. (2001). The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1. Monthly Notices of the Royal Astronomical Society, 325(2), L7-L11. https://doi.org/10.1046/j.1365-8711.2001.04659.x

We report the identification of a possible optical counterpart to the super-Eddington X-ray source NGC 5204 X-1. New Chandra data show that the X-ray source is point-like, with a luminosity of 5.2×10^39 erg/s (0.5-8 keV). It displays medium- and long... Read More about The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1.

Ultraluminous x-ray sources in external galaxies (2001)
Journal Article
King, A., Davies, M., Ward, M., Fabbiano, G., & Elvis, M. (2001). Ultraluminous x-ray sources in external galaxies. Astrophysical Journal Letters, 552(2), L109-L112. https://doi.org/10.1086/320343

We investigate models for the class of ultraluminous nonnuclear X-ray sources (i.e., ultraluminous compact X-ray sources [ULXs]) seen in a number of galaxies and probably associated with star-forming regions. Models in which the X-ray emission is ass... Read More about Ultraluminous x-ray sources in external galaxies.

PDS 456: an extreme accretion rate quasar? (2000)
Journal Article
Reeves, J., O'Brien, P., Vaughan, S., Law-Green, D., Ward, M., Simpson, C., …Edelson, R. (2000). PDS 456: an extreme accretion rate quasar?. Monthly Notices of the Royal Astronomical Society, 312, L17-L21

Fabry-Perot imaging of NGC 6090 in H₂ emission (2000)
Journal Article
Sugai, H., Davies, R., Ishii, M., & Ward, M. (2000). Fabry-Perot imaging of NGC 6090 in H₂ emission. Monthly Notices of the Royal Astronomical Society, 317, 447-452