45 citations · 265 across the 21 of their papers we have counts for
22 papers
The Broadband View of the Bare Seyfert PG 1426+015: Relativistic Reflection, the Soft Excess and the Importance of Oxygen
D. J. Walton, A. Madathil-Pottayil, P. Kosec +8
We present results from a deep, coordinated - + observation of the type 1 Seyfert PG 1426+015, a source of particular interest as the most massive reverberati…
Hidden Cooling Flows IV: More Details on Centaurus and the Efficiency of AGN Feedback in Clusters
A. C. Fabian, G. J. Ferland, J. S. Sanders +7
Cooling flows are common in galaxy clusters which have cool cores. The soft X-ray emission below 1 keV from the flows is mostly absorbed by cold dusty gas within the central coolin…
Measuring the ICM velocity structure within the A3266 galaxy cluster
E. Gatuzz, J. Sanders, A. Liu +7
We present a detailed analysis of the velocity structure of the hot intracluster medium (ICM) within the A3266 galaxy cluster, including new observations taken between June and Nov…
Consequences of a low-mass, high-pressure, star formation mode in early galaxies
A. C. Fabian, J. S. Sanders, G. J. Ferland +3
High resolution X-ray spectra reveal hidden cooling flows depositing cold gas at the centres of massive nearby early-type galaxies with little sign of normal star formation. Optica…
Constraining the Number Density of the Accretion Disk Wind in Hercules X-1 Using its Ionization Response to X-ray Pulsations
P. Kosec, D. Rogantini, E. Kara +6
X-ray binaries are known to launch powerful accretion disk winds that can have significant impact on the binary systems and their surroundings. To quantify the impact and determine…
Accretion disk wind of Hercules X-1 during the Short High state
P. Kosec, E. Kara, A. C. Fabian +5
Hercules X-1 is a nearly edge-on X-ray binary with a warped, precessing accretion disk, which manifests through a 35-day cycle of alternating High and Low flux states. This disk pr…
Chemical enrichment of ICM within the Ophiuchus cluster I: radial profiles
Efrain Gatuzz, J. S. Sanders, K. Dennerl +6
The analysis of the elemental abundances in galaxy clusters offers valuable insights into the formation and evolution of galaxies. In this study, we explore the chemical enrichment…
Chemical enrichment of ICM within the Centaurus cluster I: radial profiles
Efrain Gatuzz, J. S. Sanders, K. Dennerl +6
We examine deep {\it XMM-Newton} EPIC-pn observations of the Centaurus cluster to study the hot intracluster medium (ICM) and radial metal distributions within such an environment.…
Measuring the hot ICM velocity structure function using XMM-Newton observations
Efrain Gatuzz, R. Mohapatra, C. Federrath +4
It has been shown that the gas velocities within the intracluster medium (ICM) can be measured by applying novel XMM-Newton EPIC-pn energy scale calibration, which uses instrumenta…
Hidden Cooling Flows in Clusters of Galaxies III: Accretion onto the Central Black Hole
A. C. Fabian, J. S. Sanders, G. J. Ferland +3
Recently, we have uncovered Hidden Cooling Flows (HCF) in the X-ray spectra of the central Brightest Galaxies of 11 clusters, 1 group and 2 elliptical galaxies. Here we report such…
Vertical wind structure in an X-ray binary revealed by a precessing accretion disk
P. Kosec, E. Kara, A. C. Fabian +11
The accretion of matter onto black holes and neutron stars often leads to the launching of outflows that can greatly affect the environments surrounding the compact object. In supe…
Measuring the ICM velocity structure in the Ophiuchus cluster
Efrain Gatuzz, J. S. Sanders, K. Dennerl +8
We have found evidence of bulk velocities following active galactic nucleus (AGN) bubbles in the Virgo cluster and galaxy motions in the Centaurus cluster. In order to increase the…
Chemical enrichment of the ICM within the Virgo cluster I: radial profiles
Efrain Gatuzz, J. Sanders, K. Dennerl +8
We present a detailed analysis of the elemental abundances distribution of the Virgo cluster using {\it XMM-Newton} observations. We included in the analysis a new EPIC-pn energy s…
Hidden Cooling Flows in Clusters of Galaxies II: A Wider Sample
A. C. Fabian, J. S. Sanders, G. J. Ferland +3
We have recently uncovered Hidden Cooling Flows (HCFs) in the XMM RGS spectra of 3 clusters of galaxies, Centaurus, Perseus and A1835. Here we search for them in a wider sample of…
Unveiling the disc structure in ultraluminous X-ray source NGC 55 ULX-1
F. Barra, C. Pinto, D. J. Walton +11
Despite two decades of studies, it is still not clear whether ULX spectral transitions are due to stochastic variability in the wind or variations in the accretion rate or in the s…
The long stare at Hercules X-1 -- I. Emission lines from the outer disk, the magnetosphere boundary and the accretion curtain
P. Kosec, E. Kara, A. C. Fabian +11
Hercules X-1 is a nearly edge-on accreting X-ray pulsar with a warped accretion disk, precessing with a period of about 35 days. The disk precession allows for unique and changing…
Hidden Cooling Flows in Clusters of Galaxies
A. C. Fabian, G. J. Ferland, J. S. Sanders +3
The radiative cooling time of the hot gas at the centres of cool cores in clusters of galaxies drops down to 10 million years and below. The observed mass cooling rate of such gas…
The velocity structure of the Intracluster Medium of the Centaurus cluster
E. Gatuzz, J. S. Sanders, R. Canning +7
There are few direct measurements of ICM velocity structure, despite its importance for understanding clusters. We present a detailed analysis of the velocity structure of the Cent…
The cycle of metals in the infalling elliptical galaxy NGC 1404
F. Mernier, N. Werner, Y. Su +6
Hot atmospheres pervading galaxy clusters, groups, and early-type galaxies are rich in metals, produced during epochs and diffused via processes that are still to be determined. Wh…
Ionised Emission and Absorption in a Large Sample of Ultraluminous X-ray Sources
P. Kosec, C. Pinto, C. S. Reynolds +6
Most Ultraluminous X-ray sources (ULXs) are thought to be powered by super-Eddington accretion onto stellar-mass compact objects. Accretors in this extreme regime are naturally exp…
Measuring sloshing, merging and feedback velocities in the Virgo cluster
Efrain Gatuzz, J. S. Sanders, K. Dennerl +5
We present a detailed analysis of the velocity structure of the Virgo cluster using {\it XMM-Newton} observations. Using a novel technique which uses uses the Cu K instrumental…
The Voyage of Metals in the Universe from Cosmological to Planetary Scales: the need for a Very High-Resolution, High Throughput Soft X-ray Spectrometer
F. Nicastro, J. Kaastra, C. Argiroffi +27
Metals form an essential part of the Universe at all scales. Without metals we would not exist, and the Cosmos would look completely different. Metals are primarily born through nu…