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14 papers · 2 filters
The Closest Look at 1H0707-495: X-ray Reverberation Lags with 1.3 Ms of Data
E. Kara, A. C. Fabian, E. M. Cackett +4
Reverberation lags in AGN were first discovered in the NLS1 galaxy, 1H0707-495. We present a follow-up analysis using 1.3 Ms of data, which allows for the closest ever look at the…
A soft X-ray reverberation lag in the AGN ESO 113-G010
E. M. Cackett, A. C. Fabian, A. Zoghbi +3
Reverberation lags have recently been discovered in a handful of nearby, variable AGN. Here, we analyze a ~100 ksec archival XMM-Newton observation of the highly variable AGN, ESO…
An X-ray-UV correlation in Cen X-4 during quiescence
E. M. Cackett, E. F. Brown, N. Degenaar +3
Quiescent emission from the neutron star low-mass X-ray binary Cen X-4 is seen to be variable on timescales from hundreds of seconds to years, suggesting that at least in this obje…
Long XMM observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809: rapid variability, high spin and a soft lag
A. C. Fabian, E. Kara, D. J. Walton +21
Results are presented from a 500ks long XMM-Newton observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809. The source is rapidly variable on timescales down to a few 100s.…
The Disk-Wind-Jet Connection in the Black Hole H 1743-322
J. M. Miller, J. Raymond, A. C. Fabian +6
X-ray disk winds are detected in spectrally soft, disk-dominated phases of stellar-mass black hole outbursts. In contrast, compact, steady, relativistic jets are detected in spectr…
Evidence of Light-Bending Effects and its implication for spectral state transitions
R. C. Reis, J. M. Miller, M. T. Reynolds +4
It has long been speculated that the nature of the hard X-ray corona may be an important second driver of black hole state transitions, in addition to the mass accretion rate throu…