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X-Ray Polarimetry with the Polarization Spectroscopic Telescope Array (PolSTAR)
Henric S. Krawczynski, Daniel Stern, Fiona A. Harrison +49
This paper describes the Polarization Spectroscopic Telescope Array (PolSTAR), a mission proposed to NASA's 2014 Small Explorer (SMEX) announcement of opportunity. PolSTAR measures…
Quasi periodic oscillations in active galactic nuclei
William Alston, Andy Fabian, Julija Markeviciute +3
Quasi-periodic oscillations (QPOs) are coherent peaks of variability power observed in the X-ray power spectra (PSDs) of stellar mass X-ray binaries (XRBs). A scale invariance of t…
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…
NuSTAR and Suzaku observations of the hard state in Cygnus X-1: locating the inner accretion disk
M. L. Parker, J. A. Tomsick, J. M. Miller +20
We present simultaneous Nuclear Spectroscopic Telescope Array (NuSTAR ) and Suzaku observations of the X-ray binary Cygnus X-1 in the hard state. This is the first time this state…
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…
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…