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From ultraluminous X-ray sources to ultraluminous supersoft sources: NGC 55 ULX, the missing link
C. Pinto, W. Alston, R. Soria +8
In recent work with high-resolution grating spectrometers (RGS) aboard XMM-Newton Pinto et al. (2016) have discovered that two bright and archetypal ultraluminous X-ray sources (UL…
A strongly truncated inner accretion disk in the Rapid Burster
J. van den Eijnden, T. Bagnoli, N. Degenaar +4
The neutron star (NS) low-mass X-ray binary (LMXB) the Rapid Burster (RB; MXB 1730-335) uniquely shows both Type-I and Type-II X-ray bursts. The origin of the latter is ill-underst…
The Future of X-ray Reverberation from AGN
A. C. Fabian, W. N. Alston, E. M. Cackett +3
XMM-Newton is capable of making a transformational advance in our understanding of how luminous accreting black holes work, by dedicating about 10 per cent of future observing time…
Ultrafast outflows in ultraluminous X-ray sources
Ciro Pinto, Andrew Fabian, Matthew Middleton +1
Ultraluminous X-ray sources (ULXs) are bright extragalactic sources with X-ray luminosities above 10^39 erg/s powered by accretion onto compact objects. According to the first stud…
Discovery of coherent pulsations from the Ultraluminous X-ray Source NGC 7793 P13
F. Fuerst, D. J. Walton, F. A. Harrison +12
We report the detection of coherent pulsations from the ultraluminous X-ray source NGC 7793 P13. The ~0.42s nearly sinusoidal pulsations were initially discovered in broadband X-ra…
Molecular Gas Along a Bright H-alpha Filament in 2A 0335+096 Revealed by ALMA
A. N. Vantyghem, B. R. McNamara, H. R. Russell +17
We present ALMA CO(1-0) and CO(3-2) observations of the brightest cluster galaxy (BCG) in the 2A 0335+096 galaxy cluster (z = 0.0346). The total molecular gas mass of (1.13+/-0.15)…
The Broadband Spectral Variability of Holmberg IX X-1
D. J. Walton, F. Fuerst, F. A. Harrison +9
We present results from four new broadband X-ray observations of the extreme ultraluminous X-ray source Holmberg IX X-1 ( erg/s), performed by and $N…
Ultraviolet and X-ray variability of active galactic nuclei with Swift
Douglas J. K. Buisson, Anne M. Lohfink, William N. Alston +1
We analyse a sample of 21 active galactic nuclei (AGN) using data from the Swift satellite to study the variability properties of the population in the X-ray, UV and optical band.…
GRS 1739-278 observed at very low luminosity with XMM-Newton and NuSTAR
F. Fuerst, J. A. Tomsick, K. Yamaoka +19
We present a detailed spectral analysis of XMM-Newton and NuSTAR observations of the accreting transient black hole GRS 1739-278 during a very faint low hard state at ~0.02% of the…
The Mass Distribution of the Unusual Merging Cluster Abell 2146 from Strong Lensing
Joseph E. Coleman, Lindsay J. King, Masamune Oguri +11
Abell 2146 consists of two galaxy clusters that have recently collided close to the plane of the sky, and it is unique in showing two large shocks on $\textit{Chandra X-ray Observa…
The Distribution of Dark and Luminous Matter in the Unique Galaxy Cluster Merger Abell 2146
Lindsay J. King, Douglas I. Clowe, Joseph E. Coleman +9
Abell 2146 ( = 0.232) consists of two galaxy clusters undergoing a major merger. The system was discovered in previous work, where two large shock fronts were detected using the…
An in-depth study of a neutron star accreting at low Eddington rate: On the possibility of a truncated disk and an outflow
N. Degenaar, C. Pinto, J. M. Miller +5
Due to observational challenges our knowledge of low-level accretion flows around neutron stars is limited. We present Nustar, Swift and Chandra observations of the low-mass X-ray…
Living on a Flare: Relativistic Reflection in V404 Cyg Observed by NuSTAR During its Summer 2015 Outburst
D. J. Walton, K. Mooley, A. L. King +19
We present first results from a series of observations of the black hole X-ray binary V404 Cyg obtained during its summer 2015 outburst, primarily focusing on observations…
Observations of asymmetric velocity fields and gas cooling in the NGC 4636 galaxy group X-ray halo
Jussi Ahoranta, Alexis Finoguenov, Ciro Pinto +4
This study aims to probe the thermodynamic properties of the hot intragroup medium (IGM) plasma in the core regions of the NGC 4636 galaxy group by detailed measurements of several…
Sensitivity of the Fe K-alpha Compton shoulder to the geometry and variability of the X-ray illumination of cosmic objects
Hirokazu Odaka, Hiroki Yoneda, Tadayuki Takahashi +1
In an X-ray reflection spectrum, a tail-like spectral feature generated via Compton down-scattering, known as a Compton shoulder (CS), appears at the low-energy side of the iron K$…
The Quiescent Intracluster Medium in the Core of the Perseus Cluster
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +213
Clusters of galaxies are the most massive gravitationally-bound objects in the Universe and are still forming. They are thus important probes of cosmological parameters and a host…
Athena Wide Field Imager Key Science Drivers
Arne Rau, Kirpal Nandra, James Aird +14
The Wide Field Imager (WFI) is one of two instruments for the Advanced Telescope for High-ENergy Astrophysics (Athena). In this paper we summarise three of the many key science obj…
The Geometry of the Infrared and X-ray Obscurer in a Dusty Hyperluminous Quasar
Duncan Farrah, Mislav Balokovic, Daniel Stern +24
We study the geometry of the AGN obscurer in IRAS 09104+4109, an IR-luminous, radio-intermediate FR-I source at , using infrared data from Spitzer and Herschel, X-ray data…
Insights into the location and dynamics of the coolest X-ray emitting gas in clusters of galaxies
Ciro Pinto, Andrew C. Fabian, Anna Ogorzalek +10
We extend our previous study of the cool gas responsible for the emission of OVII X-ray lines in the cores of clusters and groups of galaxies. This is the coolest X-ray emitting ph…
HST imaging of the dusty filaments and nucleus swirl in NGC4696 at the centre of the Centaurus Cluster
A. C. Fabian, S. A. Walker, H. R. Russell +14
Narrow-band HST imaging has resolved the detailed internal structure of the 10 kpc diameter H alpha+[NII] emission line nebulosity in NGC4696, the central galaxy in the nearby Cent…
Applications for edge detection techniques using Chandra and XMM-Newton data: galaxy clusters and beyond
S. A. Walker, J. S. Sanders, A. C. Fabian
The unrivalled spatial resolution of the Chandra X-ray observatory has allowed many breakthroughs to be made in high energy astrophysics. Here we explore applications of Gaussian G…
Chandra X-ray observations of the hyper-luminous infrared galaxy IRAS F15307+3252
J. Hlavacek-Larrondo, P. Gandhi, M. T. Hogan +6
Hyper-luminous infrared galaxies (HyLIRGs) lie at the extreme luminosity end of the IR galaxy population with L. They are thought to be closer counterpa…
Detecting edges in the X-ray surface brightness of galaxy clusters
J. S. Sanders, A. C. Fabian, H. R. Russell +2
The effects of many physical processes in the intracluster medium of galaxy clusters imprint themselves in X-ray surface brightness images. It is therefore important to choose opti…
A global look at X-ray time lags in Seyfert Galaxies
E. Kara, W. N. Alston, A. C. Fabian +4
X-ray reverberation, where light-travel time delays map out the compact geometry around the inner accretion flow in supermassive black holes, has been discovered in several of the…