Outputs (12)

The impact of thermal winds on the outburst lightcurves of black hole X-ray binaries (2019)
Journal Article
Dubus, G., Done, C., Tetarenko, B. E., & Hameury, J.-M. (2019). The impact of thermal winds on the outburst lightcurves of black hole X-ray binaries. Astronomy & Astrophysics, 632, Article A40. https://doi.org/10.1051/0004-6361/201936333

Context. The observed signatures of winds from X-ray binaries are broadly consistent with thermal winds, which are driven by X-ray irradiation of the outer accretion disc. Thermal winds produce mass outflow rates that can exceed the accretion rate in... Read More about The impact of thermal winds on the outburst lightcurves of black hole X-ray binaries.

Discarding the disc in a changing-state AGN: the UV/X-ray relation in NGC 4151 (2019)
Journal Article
Mahmoud, R. D., & Done, C. (2020). Discarding the disc in a changing-state AGN: the UV/X-ray relation in NGC 4151. Monthly Notices of the Royal Astronomical Society, 491(4), 5126-5139. https://doi.org/10.1093/mnras/stz3196

Recent monitoring campaigns designed to map the accretion regime in AGN show major discrepancies with models where the optical/ultraviolet (UV) is produced by X-ray-illuminated, optically thick disc material within a few hundred gravitational radii.... Read More about Discarding the disc in a changing-state AGN: the UV/X-ray relation in NGC 4151.

Application of the Thermal Wind Model to Absorption Features in the Black Hole X-ray Binary H 1743$-$322 (2019)
Journal Article
Shidatsu, M., & Done, C. (2019). Application of the Thermal Wind Model to Absorption Features in the Black Hole X-ray Binary H 1743$-$322. Astrophysical Journal, 885(2), Article 112. https://doi.org/10.3847/1538-4357/ab46b3

High inclination black hole X-ray binaries exhibit blueshifted ionized absorption lines from disk winds, whose launching mechanism is still in debate. The lines are predominantly observed in the high/soft state and disappear in the low/hard state, an... Read More about Application of the Thermal Wind Model to Absorption Features in the Black Hole X-ray Binary H 1743$-$322.

The thermal-radiative wind in low mass X-ray binary H~1743-322; Radiation hydrodynamic simulations (2019)
Journal Article
Tomaru, R., Done, C., Ohsuga, K., Nomura, M., & Takahashi, T. (2019). The thermal-radiative wind in low mass X-ray binary H~1743-322; Radiation hydrodynamic simulations. Monthly Notices of the Royal Astronomical Society, 490(3), 3098-3111. https://doi.org/10.1093/mnras/stz2738

Blueshifted absorption lines are seen in high inclination black hole binary systems in their disc dominated states, showing these power an equatorial disc wind. While some contribution from magnetic winds remain a possibility, thermal and thermal-rad... Read More about The thermal-radiative wind in low mass X-ray binary H~1743-322; Radiation hydrodynamic simulations.

Modelling the spectral energy distribution of super-Eddington quasars (2019)
Journal Article
Kubota, A., & Done, C. (2019). Modelling the spectral energy distribution of super-Eddington quasars. Monthly Notices of the Royal Astronomical Society, 489(1), 524-533. https://doi.org/10.1093/mnras/stz2140

We develop a broadband spectral model, AGNSLIM, to describe super-Eddington black hole accretion disc spectra. This is based on the slim disc emissivity, where radial advection keeps the surface luminosity at the local Eddington limit, resulting in L... Read More about Modelling the spectral energy distribution of super-Eddington quasars.

The relativistic jet of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS J1222+0413 (2019)
Journal Article
Kynoch, D., Landt, H., Ward, M. J., Done, C., Boisson, C., Baloković, M., Angelakis, E., & Myserlis, I. (2019). The relativistic jet of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS J1222+0413. Monthly Notices of the Royal Astronomical Society, 487(1), 181-197. https://doi.org/10.1093/mnras/stz1193

We present a multi-frequency study of PKS J1222+0413 (4C +04.42), currently the highest redshift γ-ray emitting narrow-line Seyfert 1 (γ-NLS1). We assemble a broad spectral energy distribution (SED) including previously unpublished datasets: X-ray da... Read More about The relativistic jet of the γ-ray emitting narrow-line Seyfert 1 galaxy PKS J1222+0413.

CLOUDY view of the warm corona (2019)
Journal Article
Panda, S., Czerny, B., Done, C., & Kubota, A. (2019). CLOUDY view of the warm corona. Astrophysical Journal, 875(2), Article 133. https://doi.org/10.3847/1538-4357/ab11cb

Bright active galaxies show a range of properties, but many of these properties are correlated, which has led to the concept of the quasar main sequence. We test whether our current understanding of the quasar structure allows the pattern observed in... Read More about CLOUDY view of the warm corona.

Reverberation Reveals the Truncated Disc in the Hard State of GX 339-4 (2019)
Journal Article
Mahmoud, R. D., Done, C., & De Marco, B. (2019). Reverberation Reveals the Truncated Disc in the Hard State of GX 339-4. Monthly Notices of the Royal Astronomical Society, 486(2), 2137-2152. https://doi.org/10.1093/mnras/stz933

The nature and geometry of the hard state in black hole binaries is controversial. The broadband continuum spectrum and fast variability properties can be explained in a model where the inner disc evaporates into a geometrically thick, hot flow. Howe... Read More about Reverberation Reveals the Truncated Disc in the Hard State of GX 339-4.

A deep X-ray view of the bare AGN Ark 120. V. Spin determination from disc-Comptonisation efficiency method (2019)
Journal Article
Porquet, D., Done, C., Reeves, J., Grosso, N., Marinucci, A., Matt, G., Lobban, A., Nardini, E., Braito, V., Marin, F., Kubota, A., Ricci, C., Koss, M., Stern, D., Ballantyne, D., & Farrah, D. (2019). A deep X-ray view of the bare AGN Ark 120. V. Spin determination from disc-Comptonisation efficiency method. Astronomy & Astrophysics, 623, Article A11. https://doi.org/10.1051/0004-6361/201834448

Context. The spin of supermassive black holes (SMBH) in active galactic nuclei (AGN) can be determined from spectral signature(s) of relativistic reflection such as the X-ray iron Kα line profile, but this can be rather uncertain when the line of sig... Read More about A deep X-ray view of the bare AGN Ark 120. V. Spin determination from disc-Comptonisation efficiency method.

Rapid Black Hole Growth at the Dawn of the Universe: Super-Eddington Quasar at z=6.6 (2019)
Journal Article
Tang, J., Goto, T., Ohyama, Y., Jin, C., Done, C., Lu, T., …Kim, S. J. (2019). Rapid Black Hole Growth at the Dawn of the Universe: Super-Eddington Quasar at z=6.6. Monthly Notices of the Royal Astronomical Society, 484(2), 2575-2586. https://doi.org/10.1093/mnras/stz134

We present the analysis of a new near-infrared (NIR) spectrum of a recently discovered z = 6.621 quasar PSO J006 + 39 in an attempt to explore the early growth of supermassive black holes (SMBHs). This NIR (rest-frame ultraviolet, UV) spectrum shows... Read More about Rapid Black Hole Growth at the Dawn of the Universe: Super-Eddington Quasar at z=6.6.