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Article
Heartbeat of an active galaxy
Active galaxies are thought to be the supermassive cousins of binary systems in our Galaxy that contain black holes. Observations of an unusual active galaxy provide compelling evidence that these systems are ...
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Article
Multi-Wavelength Variability
Multiwavelength variability data, combined with spectral-timing analysis techniques, provides information about the causal relationship between different physical components in accreting black holes. Using fas...
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Chapter
Multi-Wavelength Variability
Multiwavelength variability data, combined with spectral-timing analysis techniques, provides information about the causal relationship between different physical components in accreting black holes. Using fas...
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Article
The response of relativistic outflowing gas to the inner accretion disk of a black hole
X-ray detection of an ultrafast outflow of gas is strongly linked with energy emission from the inner accretion disk of a black hole, suggesting that X-rays ionize the outflowing disk wind.
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Article
Accretion in strong field gravity with eXTP
In this paper we describe the potential of the enhanced X-ray Timing and Polarimetry (eXTP) mission for studies related to accretion flows in the strong field gravity regime around both stellar-mass and superm...
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Article
The enhanced X-ray Timing and Polarimetry mission—eXTP
In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism...
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Article
A dynamic black hole corona in an active galaxy through X-ray reverberation map**
X-ray reverberation echoes are assumed to be produced in the strongly distorted spacetime around accreting supermassive black holes. This signal allows us to spatially map the geometry of the inner accretion flow
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Article
Open AccessThe high energy Universe at ultra-high resolution: the power and promise of X-ray interferometry
We propose the development of X-ray interferometry (XRI), to reveal the Universe at high energies with ultra-high spatial resolution. With baselines which can be accommodated on a single spacecraft, XRI can re...