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An Eddington Limited Accretion Disk Wind in the narrow line Seyfert 1, PG 1448+273
J. N. Reeves, V. Braito, A. Luminari +5
PG 1448+273 is a luminous, nearby (), narrow line Seyfert 1 galaxy, which likely accretes close to the Eddington limit. Previous X-ray observations of PG 1448 with XMM-Ne…
Revealing the burning and soft heart of the bright bare AGN ESO 141-G55: X-ray broadband and SED analysis
Delphine Porquet, James N. Reeves, Scott Hagen +4
[Abridged] ESO 141-G55 is a nearby X-ray bright BLS1, which has been classified as a bare AGN due to the lack of warm absorption along its line-of-sight, providing an unhampered vi…
Probing the face-on disc-corona system of the bare AGN Mrk 110 from UV to hard X-rays: a moderate changing-state AGN?
Delphine Porquet, Scott Hagen, Nicolas Grosso +4
[Abridged] The X-ray broadband spectra of the bare AGN Mrk 110, obtained by simultaneous XMM-Newton and NuSTAR observations (Nov 2019 and April 2020), are characterised by the pres…
Rapid Variability of the accretion disk wind in the narrow line Seyfert 1, PG 1448+273
James Reeves, Valentina Braito, Delphine Porquet +3
PG 1448+273 is a luminous, nearby (), narrow line Seyfert 1 galaxy, which likely accretes close to the Eddington limit. XMM-Newton observations of PG 1448+273 in 2017 rev…
Origins of the UV/X-ray Relation in Arakelian 120
Ra'ad David Mahmoud, Chris Done, Delphine Porquet +1
We explore the accretion geometry in Arakelian 120 using intensive UV and X-ray monitoring from \textit{Swift}. The hard X-rays ( keV) show large amplitude, fast (few-day) va…
The luminosity-dependent contribution from the broad line region to the wavelength-dependent lags in Mrk 110
F. M. Vincentelli, I. McHardy, V. Hernández Santisteban +5
We have measured the wavelength-dependent lags between the X-ray, UV and optical bands in the high accretion rate () Active Galactic Nucleus Mrk 110 durin…
The first simultaneous X-ray broad-band view of Mrk 110 with XMM-Newton and NuSTAR
D. Porquet, J. N. Reeves, N. Grosso +2
(Abridged) Soft and hard X-ray excesses, compared to the continuum power-law shape between ~2-10 keV, are common features observed in the spectra of active galactic nuclei (AGN) an…
Variable oxygen emission from the accretion disk of Mrk 110
J. N. Reeves, D. Porquet, V. Braito +2
Six XMM-Newton observations of the bright narrow line Seyfert 1, Mrk 110, from 2004-2020, are presented. The analysis of the grating spectra from the Reflection Grating Spectromete…
Modelling X-ray RMS spectra II: the ultra-fast outflow of PDS 456
L. Härer, M. L. Parker, A. Joyce +6
We present an improved model for excess variance spectra describing ultra-fast outflows and successfully apply it to the luminous (L ~ 10^47 erg/s) low-redshift (z = 0.184) quasar…
The flaring X-ray corona in the quasar PDS 456
James Reeves, Valentina Braito, Delphine Porquet +3
New Swift monitoring observations of the variable, radio-quiet quasar, PDS 456, are presented. A bright X-ray flare was captured in September 2018, the flux increasing by a factor…
Detection of a possible multiphase ultra-fast outflow in IRAS 13349+2438 with NuSTAR and XMM-Newton
M. L. Parker, G. A. Matzeu, W. N. Alston +6
We present joint NuSTAR and XMM-Newton observations of the bright, variable quasar IRAS 13349+2438. This combined dataset shows two clear iron absorption lines at 8 and 9 keV, whic…
The first broadband X-ray view of the narrow line Seyfert 1 Ton S180
G. A. Matzeu, E. Nardini, M. L. Parker +15
We present joint \textit{XMM-Newton} and \textit{NuSTAR} observations of the `bare' narrow line Seyfert 1 Ton S180 (), carried out in 2016 and providing the first hard X-r…
X-ray variability analysis of a large series of XMM-Newton + NuSTAR observations of NGC 3227
A. P. Lobban, T. J. Turner, J. N. Reeves +2
We present a series of X-ray variability results from a long XMM-Newton + NuSTAR campaign on the bright, variable AGN NGC 3227. We present an analysis of the lightcurves, showing t…
X-ray, UV and optical time delays in the bright Seyfert galaxy Ark 120 with co-ordinated Swift and ground-based observations
A. P. Lobban, S. Zola, U. Pajdosz-Smierciak +17
We report on the results of a multiwavelength monitoring campaign of the bright, nearby Seyfert galaxy, Ark 120 using a ~50-day observing programme with Swift and a ~4-month co-ord…
Searching for Ultra-fast Outflows in AGN using Variability Spectra
Z. Igo, M. L. Parker, G. A. Matzeu +8
We present a qualitative search for ultra-fast outflows (UFOs) in excess variance spectra of radio-quiet active galactic nuclei (AGN). We analyse 42 sources from the Tombesi et al.…
A deep X-ray view of the bare AGN Ark120. V. Spin determination from disc-Comptonisation efficiency method
D. Porquet, C. Done, J. N. Reeves +13
[Abridged] In our previous work on Ark 120, we found that its 2014 X-ray spectrum is dominated by Comptonisation, while the relativistic reflection emission only originates at tens…
A deep X-ray view of the bare AGN Ark 120. VI. Geometry of the hot corona from spectroscopic and polarization signatures
A. Marinucci, D. Porquet, F. Tamborra +9
The spectral shape of the hard X-ray continuum of Active Galactic Nuclei (AGN) can be ascribed to inverse Compton scattering of optical/UV seed photons from the accretion disc by a…
Resolving the X-ray obscuration in a low flux observation of the quasar PDS 456
James Reeves, Valentina Braito, Emanuele Nardini +5
Simultaneous XMM-Newton, NuSTAR and HST observations, performed in March 2017, of the nearby () luminous quasar PDS 456 are presented. PDS 456 had a low X-ray flux compare…
A rapid occultation event in NGC 3227
T. J. Turner, J. N. Reeves, V. Braito +3
NGC 3227 exhibits rapid flux and spectral variability in the X-ray band. To understand this behaviour we conducted a co-ordinated observing campaign using 320 ks of XMM-Newton expo…
An ultra-fast inflow in the luminous Seyfert PG1211+143
Ken Pounds, Chris Nixon, Andrew Lobban +1
Blueshifted absorption lines in the X-ray spectra of AGN show that ultra-fast outflows with typical velocities are a common feature of these luminous objects. Such po…
A new relativistic component of the accretion disk wind in PDS 456
James Reeves, Valentina Braito, Emanuele Nardini +3
Past X-ray observations of the nearby luminous quasar PDS 456 (at ) have revealed a wide angle accretion disk wind (Nardini et al. 2015), with an outflow velocity of $\sim…
X-ray time lags in PG 1211+143
Andrew Lobban, Simon Vaughan, Ken Pounds +1
We investigate the X-ray time lags of a recent ~630ks XMM-Newton observation of PG 1211+143. We find well-correlated variations across the XMM-Newton EPIC bandpass, with the first…
The variable, fast soft X-ray wind in PG 1211+143
James Reeves, Andrew Lobban, Ken Pounds
The analysis of a series of seven observations of the nearby () QSO, PG 1211+143, taken with the Reflection Grating Spectrometer (RGS) on-board XMM-Newton in 2014, are pr…
Evidence for a radiatively driven disc-wind in PDS 456?
G. A. Matzeu, J. N. Reeves, V. Braito +5
We present a newly discovered correlation between the wind outflow velocity and the X-ray luminosity in the luminous () nearby ()…