330 citations · 1.5k across the 28 of their papers we have counts for
28 papers
High resolution X-ray spectroscopy of V4641 Sgr during its 2020 outburst
A. W. Shaw, J. M. Miller, V. Grinberg +7
We observed the Galactic black hole X-ray binary V4641 Sgr with the high resolution transmission gratings on Chandra during the source's 2020 outburst. Over two epochs of Chandra g…
Extreme X-ray Reflection in the Nucleus of the Seyfert Galaxy NGC 5033
S. B. Yun, J. M. Miller, D. Barret +7
NGC 5033 is an intriguing Seyfert galaxy because its sub-classification may change with time, and because optical and sub-mm observations find that the massive black hole does not…
The defocused observations of bright sources with Athena/X-IFU
E. S. Kammoun, D. Barret, P. Peille +5
The X-ray Integral Field Unit (X-IFU) is the high resolution X-ray spectrometer of ESA's Athena X-ray observatory. It will deliver X-ray data in the 0.2-12 keV band with an unprece…
A Swift study of long-term changes in the X-ray flaring properties of Sagittarius A*
A. Andrés, J. van den Eijnden, N. Degenaar +12
The radiative counterpart of the supermassive black hole at the Galactic Centre, Sagittarius A*, displays flaring emission in the X-ray band atop a steady, quiescent level. Flares…
A Spectroscopic Angle on Central Engine Size Scales in Accreting Neutron Stars
Nicolas Trueba, J. M. Miller, A. C. Fabian +9
Analyses of absorption from disk winds and atmospheres in accreting compact objects typically treat the central emitting regions in these systems as point sources relative to the a…
Multiwavelength characterisation of the accreting millisecond X-ray pulsar and ultra-compact binary IGR J17062-6143
J. V. Hernandez Santisteban, V. Cuneo, N. Degenaar +8
IGR J17062-6143 is an ultra-compact X-ray binary (UCXB) with an orbital period of 37.96 min. It harbours a millisecond X-ray pulsar that is spinning at 163 Hz and and has continuou…
X-ray reflection from the inner disk of the AGN Ton S180
M. L. Parker, J. M. Miller, A. C. Fabian
We analyse a long archival XMM-Newton observation of the narrow-line Seyfert 1 galaxy Ton S180, using the latest reflection models to explore the high quality X-ray spectrum. We fi…
A Long Look At MCG-5-23-16 With NuSTAR: I- Relativistic Reflection And Coronal Properties
Abderahmen Zoghbi, G. Matt, J. M. Miller +13
MCG-5-23-16 was targeted in early 2015 with a half mega-seconds observing campaign using NuSTAR. Here we present the spectral analysis of these datasets along with an earlier obser…
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…
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…
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…
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…
ASTRO-H White Paper - AGN Winds
J. S. Kaastra, Y. Terashima, T. Kallman +23
In this white paper we describe the prospects for ASTRO-H for the study of outflows from active galactic nuclei. The most important breakthroughs in this field are expected to aris…
New Constraints on the Black Hole Low/Hard State Inner Accretion Flow with NuSTAR
J. M. Miller, J. A. Tomsick, M. Bachetti +12
We report on an observation of the Galactic black hole candidate GRS 1739-278 during its 2014 outburst, obtained with NuSTAR. The source was captured at the peak of a rising "low/h…
The 2013 outburst of a transient very faint X-ray binary, 23" from Sgr A*
E. W. Koch, A. Bahramian, C. O. Heinke +12
We report observations using the Swift/XRT, NuSTAR, and Chandra X-ray telescopes of the transient X-ray source CXOGC J174540.0-290005, during its 2013 outburst. Due to its location…
Patchy Accretion Disks in Ultraluminous X-ray Sources
J. M. Miller, M. Bachetti, D. Barret +5
The X-ray spectra of the most extreme ultra-luminous X-ray sources -- those with L > 1 E+40 erg/s -- remain something of a mystery. Spectral roll-over in the 5-10 keV band was orig…
The 3 Ms Chandra Campaign on Sgr A*: A Census of X-ray Flaring Activity from the Galactic Center
J. Neilsen, M. A. Nowak, C. Gammie +14
Over the last decade, X-ray observations of Sgr A* have revealed a black hole in a deep sleep, punctuated roughly once per day by brief flares. The extreme X-ray faintness of this…
Constraints on the Neutron Star and Inner Accretion Flow in Serpens X-1 Using NuSTAR
J. M. Miller, M. L. Parker, F. Fuerst +17
We report on an observation of the neutron star low-mass X-ray binary Serpens X-1, made with NuSTAR. The extraordinary sensitivity afforded by NuSTAR facilitated the detection of a…
NuSTAR Spectroscopy of GRS 1915+105: Disk Reflection, Spin, and Connections to Jets
J. M. Miller, M. L. Parker, F. Fuerst +15
We report on the results of spectral fits made to a NuSTAR observation of the black hole GRS 1915+105 in a "plateau" state. This state is of special interest because it is similar…
LOFT: the Large Observatory For X-ray Timing
M. Feroci, J. W. den Herder, E. Bozzo +245
The LOFT mission concept is one of four candidates selected by ESA for the M3 launch opportunity as Medium Size missions of the Cosmic Vision programme. The launch window is curren…
On the Role of the Accretion Disk in Black Hole Disk-Jet Connections
J. M. Miller, G. G. Pooley, A. C. Fabian +5
Models of jet production in black hole systems suggest that the properties of the accretion disk - such as its mass accretion rate, inner radius, and emergent magnetic field - shou…
On the determination of the spin of the black hole in Cyg X-1 from X-ray reflection spectra
A. C. Fabian, D. R. Wilkins, J. M. Miller +9
The spin of Cygnus X-1 is measured by fitting reflection models to Suzaku data covering the energy band 0.9-400 keV. The inner radius of the accretion disc is found to lie within 2…
X-ray spectral variability in NGC 3783
R. C. Reis, A. C. Fabian, C. S. Reynolds +6
NGC 3783 was observed for approximately 210ks by Suzaku and in this time showed significant spectral and flux variability at both short (20ks) and long (100ks) time scales. The ful…
Unusual glitch activity in the RRAT J1819-1458: an exhausted magnetar?
A. G. Lyne, M. A. McLaughlin, E. F. Keane +6
We present an analysis of regular timing observations of the high-magnetic-field Rotating Radio Transient (RRAT) J18191458 obtained using the 64-m Parkes and 76-m Lovell radio t…