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The NuSTAR Extragalactic Surveys: First Direct Measurements of the >10 keV X-Ray Luminosity Function for Active Galactic Nuclei at z>0.1
J. Aird, D. M. Alexander, D. R. Ballantyne +34
We present the first direct measurements of the rest-frame 10-40 keV X-ray luminosity function (XLF) of Active Galactic Nuclei (AGNs) based on a sample of 94 sources at 0.1 < z <3,…
Flaring from the supermassive black hole in Mrk 335 studied with Swift and NuSTAR
D. R. Wilkins, L. C. Gallo, D. Grupe +3
Monitoring of the narrow line Seyfert 1 galaxy Markarian 335 (Mrk 335) with the Swift satellite discovered an X-ray flare beginning 2014 August 29. At the peak, the 0.5-5keV count…
The Corona of the Broad-Line Radio Galaxy 3C 390.3
Anne Lohfink, Patrick Ogle, Francesco Tombesi +17
We present the results from a joint Suzaku/NuSTAR broad-band spectral analysis of 3C 390.3. The high quality data enables us to clearly separate the primary continuum from the repr…
Diagnosing the accretion flow in ultraluminous X-ray sources using soft X-ray atomic features
Matthew J. Middleton, Dominic J. Walton, Andrew Fabian +5
The lack of unambiguous detections of atomic features in the X-ray spectra of ultraluminous X-ray sources (ULXs) has proven a hindrance in diagnosing the nature of the accretion fl…
A test of the nature of the Fe K Line in the neutron star low-mass X-ray binary Serpens X-1
Chia-Ying Chiang, Edward M. Cackett, Jon M. Miller +12
Broad Fe K emission lines have been widely observed in the X-ray spectra of black hole systems, and in neutron star systems as well. The intrinsically narrow Fe K fluorescent line…
Constraining gas motions in the Centaurus cluster using X-ray surface brightness fluctuations and metal diffusion
S. A. Walker, J. S. Sanders, A. C. Fabian
We compare two different methods of constraining the characteristic velocity and spatial scales of gas motions in the X-ray bright, nearby Centaurus cluster, using new deep (760ks)…
Searching for Correlations in Simultaneous X-ray and UV Emission in the Narrow-line Seyfert 1 galaxy 1H 0707-495
Damien Robertson, Luigi C. Gallo, Abderahmen Zoghbi +1
We examine simultaneous X-ray and UV light curves from multi-epoch 8 day XMM Newton observations of the narrow line Seyfert 1 galaxy 1H 0707-495. The simultaneous observations reve…
The NuSTAR X-ray spectrum of the low-luminosity AGN in NGC 7213
F. Ursini, A. Marinucci, G. Matt +11
We present an analysis of the 3-79 keV NuSTAR spectrum of the low-luminosity active galactic nucleus NGC 7213. In agreement with past observations, we find a lower limit to the hig…
NuSTAR observations of the powerful radio-galaxy Cygnus A
Christopher S. Reynolds, Anne M. Lohfink, Patrick M. Ogle +17
We present NuSTAR observations of the powerful radio galaxy Cygnus A, focusing on the central absorbed active galactic nucleus (AGN). Cygnus A is embedded in a cool-core galaxy clu…
The complex accretion geometry of GX 339-4 as seen by NuSTAR and Swift
F. Fuerst, M. A. Nowak, J. A. Tomsick +19
We present spectral analysis of five NuSTAR and Swift observations of GX 339-4 taken during a failed outburst in summer 2013. These observations cover Eddington luminosity fraction…
Properties of AGN coronae in the NuSTAR era
A. C. Fabian, A. Lohfink, E. Kara +3
The focussing optics of NuSTAR have enabled high signal-to-noise spectra to be obtained from many X-ray bright Active Galactic Nuclei (AGN) and Galactic Black Hole Binaries (BHB).…
A NuSTAR observation of disk reflection from close to the neutron star in 4U 1608-52
N. Degenaar, J. M. Miller, D. Chakrabarty +3
Studying the reflection of X-rays off the inner edge of the accretion disk in a neutron star low-mass X-ray binary, allows us to investigate the accretion geometry and to constrain…
Effects of the variability of the nucleus of NGC1275 on X-ray observations of the surrounding intracluster medium
A. C. Fabian, S. A. Walker, C. Pinto +2
The active galaxy NGC1275 lies at the centre of the Perseus cluster of galaxies, which is the X-ray brightest cluster in the Sky. The nucleus shows large variability over the past…
NuSTAR and Suzaku X-ray Spectroscopy of NGC 4151: Evidence for Reflection from the Inner Accretion Disk
M. L. Keck, L. W. Brenneman, D. R. Ballantyne +19
We present X-ray timing and spectral analyses of simultaneous 150 ks Nuclear Spectroscopic Telescope Array (NuSTAR) and Suzaku X-ray observations of the Seyfert 1.5 galaxy NGC 4151…
Simultaneous NuSTAR/Chandra observations of the Bursting Pulsar GRO J1744-28 during its third reactivation
G. Younes, C. Kouveliotou, B. W. Grefenstette +21
We report on a 10 ks simultaneous Chandra/HETG-NuSTAR observation of the Bursting Pulsar, GRO J1744-28, during its third detected outburst since discovery and after nearly 18 years…
The Compton hump and variable blue wing in the extreme low-flux NuSTAR observations of 1H0707-495
E. Kara, A. C. Fabian, A. M. Lohfink +10
The Narrow-line Seyfert I galaxy, 1H0707-495, has been well observed in the 0.3-10 keV band, revealing a dramatic drop in flux in the iron K alpha band, a strong soft excess, and s…
A Hard X-Ray Study of Ultraluminous X-ray Source NGC 5204 X-1 with NuSTAR and XMM-Newton
E. S. Mukherjee, D. J. Walton, M. Bachetti +16
We present the results from coordinated X-ray observations of the ultraluminous X-ray source NGC 5204 X-1 performed by NuSTAR and XMM-Newton in early 2013. These observations provi…
Gas Density Fluctuations in the Perseus Cluster: Clumping Factor and Velocity Power Spectrum
I. Zhuravleva, E. Churazov, P. Arevalo +9
X-ray surface brightness fluctuations in the core of the Perseus Cluster are analyzed, using deep observations with the Chandra observatory. The amplitude of gas density fluctuatio…
NuSTAR Reveals Relativistic Reflection But No Ultra-Fast Outflow In The Quasar PG 1211+143
A. Zoghbi, J. M. Miller, D. J. Walton +9
We report on four epochs of observations of the quasar PG 1211+143 using NuSTAR. The net exposure time is 300 ks. Prior work on this source found suggestive evidence of an 'ultra-f…
Chemical Enrichment RGS cluster sample (CHEERS): Constraints on turbulence
Ciro Pinto, Jeremy S. Sanders, Norbert Werner +6
Feedback from AGN, galactic mergers, and sloshing are thought to give rise to turbulence, which may prevent cooling in clusters. We aim to measure the turbulence in clusters of gal…