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13 papers · 2 filters
The ultraluminous X-ray sources NGC 1313 X-1 and X-2: a broadband study with NuSTAR and XMM-Newton
Matteo Bachetti, Vikram Rana, Dominic J. Walton +16
We present the results of NuSTAR and XMM-Newton observations of the two ultraluminous X-ray sources (ULX) NGC 1313 X-1 and X-2. The combined spectral bandpass of the two satellites…
The curious time lags of PG 1244+026: Discovery of the iron K reverberation lag
E. Kara, E. M. Cackett, A. C. Fabian +2
High-frequency iron K reverberation lags, where the red wing of the line responds before the line centroid, are a robust signature of relativistic reflection off the inner accretio…
The Reflection Component from Cygnus X-1 in the Soft State Measured by NuSTAR and Suzaku
John A. Tomsick, Michael A. Nowak, Michael Parker +21
The black hole binary Cygnus X-1 was observed in late-2012 with the Nuclear Spectroscopic Telescope Array (NuSTAR) and Suzaku, providing spectral coverage over the ~1-300 keV range…
Athena+: The first Deep Universe X-ray Observatory
D. Barret, K. Nandra, X. Barcons +31
The Advanced Telescope for High-energy Astrophysics (Athena+) is being proposed to ESA as the L2 mission (for a launch in 2028) and is specifically designed to answer two of the mo…
XIPE: the X-ray Imaging Polarimetry Explorer
Paolo Soffitta, Xavier Barcons, Ronaldo Bellazzini +96
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to…
The size of the X-ray emitting region in SWIFT J2127.4+5654 via a broad line region cloud X-ray eclipse
Mario Sanfrutos, Giovanni Miniutti, Beatriz Agís-González +4
We present results obtained from the time-resolved X-ray spectral analysis of the Narrow-Line-Seyfert 1 galaxy SWIFT J2127.4+5654 during a ~130 ks XMM-Newton observation. We reveal…
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…
An X-Ray View of the Jet-Cycle in the Radio Loud AGN 3C120
Anne M. Lohfink, Christopher S. Reynolds, Svetlana G. Jorstad +10
We present a study of the central engine in the broad-line radio galaxy 3C120 using a multi-epoch analysis of a deep XMM-Newton observation and two deep Suzaku pointings (in 2012).…
What is on Tap? The Role of Spin in Compact Objects and Relativistic Jets
Ashley L. King, Jon M. Miller, Kayhan Gultekin +4
We examine the role of spin in launching jets from compact objects across the mass scale. Our work includes a total of 37 Seyferts, 11 stellar-mass black holes, and 13 neutron star…
VLT/FORS2 observations of four high-luminosity ULX candidates
M. Heida, P. G. Jonker, M. A. P. Torres +4
We obtained VLT/FORS2 spectra of the optical counterparts of four high-luminosity (L_X >= 10^40 erg/s) ULX candidates from the catalog of Walton (2011). We first determined accurat…
1ES 1927+654: a bare Seyfert 2
L. C. Gallo, C. MacMackin, R. Vasudevan +3
1ES 1927+654 is an active galactic nucleus (AGN) that appears to defy the unification model. It exhibits a type-2 optical spectrum, but possesses little X-ray obscuration. XMM-Newt…
Discovery of Fe K-alpha X-ray reverberation around the black holes in MCG-5-23-16 and NGC 7314
A. Zoghbi, C. Reynolds, E. M. Cackett +3
Several X-ray observations have recently revealed the presence of reverberation time delays between spectral components in AGN. Most of the observed lags are between the power-law…
Three AGN Close To The Effective Eddington Limit
R. V. Vasudevan, A. C. Fabian, R. F. Mushotzky +3
The Effective Eddington Limit for dusty gas surrounding AGN is lower than the canonical Eddington limit for hydrogen gas. Previous results from the Swift/BAT 9-month catalogue sugg…