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The origin of ultrafast outflows in AGN: Monte Carlo simulations of the wind in PDS 456 (2014)
Journal Article
Hagino, K., Odaka, H., Done, C., Gandhi, P., Watanabe, S., Sako, M., & Takahashi, T. (2015). The origin of ultrafast outflows in AGN: Monte Carlo simulations of the wind in PDS 456. Monthly Notices of the Royal Astronomical Society, 446(1), 663-676. https://doi.org/10.1093/mnras/stu2095

Ultrafast outflows (UFOs) are seen in many AGN, giving a possible mode for AGN feedback on to the host galaxy. However, the mechanism(s) for the launch and acceleration of these outflows are currently unknown, with UV line driving apparently strongly... Read More about The origin of ultrafast outflows in AGN: Monte Carlo simulations of the wind in PDS 456.

Irradiated, colour-temperature-corrected accretion discs in ultraluminous X-ray sources (2014)
Journal Article
Sutton, A. D., Done, C., & Roberts, T. P. (2014). Irradiated, colour-temperature-corrected accretion discs in ultraluminous X-ray sources. Monthly Notices of the Royal Astronomical Society, 444(3), 2415-2427. https://doi.org/10.1093/mnras/stu1597

Although attempts have been made to constrain the stellar types of optical counterparts to ultraluminous X-ray sources (ULXs), the detection of optical variability instead suggests that they may be dominated by reprocessed emission from X-rays which... Read More about Irradiated, colour-temperature-corrected accretion discs in ultraluminous X-ray sources.

SUZAKU Observation of the Black Hole Binary 4U 1630-47 in the Very High State (2014)
Journal Article
Hori, T., Ueda, Y., Shidatsu, M., Kawamuro, T., Kubota, A., Done, C., …Nagayama, T. (2014). SUZAKU Observation of the Black Hole Binary 4U 1630-47 in the Very High State. Astrophysical Journal, 790(1), Article 20. https://doi.org/10.1088/0004-637x/790/1/20

We report the results from an X-ray and near-infrared observation of the Galactic black hole binary 4U 1630-47 in the very high state (VHS), performed with Suzaku and the Infrared Survey Facility around the peak of the 2012 September-October outburst... Read More about SUZAKU Observation of the Black Hole Binary 4U 1630-47 in the Very High State.

Spectral and Timing Properties of the Black Hole X-Ray Binary H1743-322 in the Low/Hard State Studied with Suzaku (2014)
Journal Article
Shidatsu, M., Ueda, Y., Yamada, S., Done, C., Hori, T., Yamaoka, K., …Moritani, Y. (2014). Spectral and Timing Properties of the Black Hole X-Ray Binary H1743-322 in the Low/Hard State Studied with Suzaku. Astrophysical Journal, 789(2), Article 100. https://doi.org/10.1088/0004-637x/789/2/100

We report on the results from Suzaku observations of the Galactic black hole X-ray binary H1743–322 in the low/hard state during its outburst in 2012 October. We appropriately take into account the effects of dust scattering to accurately analyze the... Read More about Spectral and Timing Properties of the Black Hole X-Ray Binary H1743-322 in the Low/Hard State Studied with Suzaku.

A physical model for the X-ray time lags of narrow-line Seyfert type 1 active galactic nuclei (2014)
Journal Article
Gardner, E., & Done, C. (2014). A physical model for the X-ray time lags of narrow-line Seyfert type 1 active galactic nuclei. Monthly Notices of the Royal Astronomical Society, 442(3), 2456-2473. https://doi.org/10.1093/mnras/stu1026

We study the origin of the soft X-ray excess seen in the ‘simple’ narrow-line Seyfert 1 galaxy PG1244+026 using all available spectral-timing information. This object shows the now ubiquitous switch between soft leading the hard band on long time-sca... Read More about A physical model for the X-ray time lags of narrow-line Seyfert type 1 active galactic nuclei.

A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations (2014)
Journal Article
Finn, C. W., Morris, S. L., Crighton, N. H., Hamann, F., Done, C., Theuns, T., …Worseck, G. (2014). A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations. Monthly Notices of the Royal Astronomical Society, 440(4), 3317-3340. https://doi.org/10.1093/mnras/stu518

We present HST/COS observations of highly ionized absorption lines associated with a radio-loud quasar (QSO) at z = 1.1319. The absorption system has multiple velocity components, with an overall width of ≈600 km s−1, tracing gas that is largely outf... Read More about A compact, metal-rich, kpc-scale outflow in FBQS J0209-0438: detailed diagnostics from HST/COS extreme UV observations.

X-ray time delays in the narrow line Seyfert 1 galaxy PG 1244+026 (2014)
Journal Article
Alston, W., Done, C., & Vaughan, S. (2014). X-ray time delays in the narrow line Seyfert 1 galaxy PG 1244+026. Monthly Notices of the Royal Astronomical Society, 439(2), 1548-1555. https://doi.org/10.1093/mnras/stu005

We analyse the X-ray time-lags in the narrow line Seyfert 1 (NLS1) galaxy PG 1244+026 (MBH ∼ 107 M⊙, L/LEdd ∼ 1). The time delay between the soft (0.3–0.7 keV) and harder (1.2–4.0 keV) variations shows the well-established switch from hard lags at lo... Read More about X-ray time delays in the narrow line Seyfert 1 galaxy PG 1244+026.