Context. One of the most distinctive features in active galactic nuclei (AGN) is the variability of their emission. Variability has been discovered at X-ray, UV...
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PublicationX-ray spectral variability of seven LINER nuclei with XMM-Newton and Chandra data
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PublicationX-Ray States of Redback Millisecond Pulsars
Compact binary millisecond pulsars with main-sequence donors, often referred to as "redbacks," constitute the long-sought link between low-mass X-ray binaries...
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PublicationX-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles
Context. Active galactic nuclei (AGN), powered by accretion onto supermassive black holes (SMBHs), are thought to be scaled up versions of Galactic black hole X...
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PublicationX-ray, radio, and infrared observations of the 'rapid burster' /MXB 1730-335/ during 1979 and 1980
The paper reports partially simultaneous observations of the 'rapid burster' (MXB 1730-335) at X-ray, infrared, and radio wavelengths, covering several hundred...
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PublicationX-ray-selected broad absorption line quasi-stellar objects
We study a sample of six X-ray-selected broad absorption line (BAL) quasi-stellar objects (QSOs) from the XMM-Newton Wide Angle Survey. All six objects are...
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PublicationX-shooter Observations of Main-sequence Stars in the Globular Cluster NGC 2808: First Chemical Tagging of a He-normal and a He-rich Dwarf
We present the first chemical composition study of two unevolved stars in the globular cluster NGC 2808, obtained with the X-shooter spectrograph at VLT. NGC...
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PublicationX-Shooting ULLYSES: Massive stars at low metallicity. I. Project description
Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts, and gravitational wave events involving spectacular black hole mergers...
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PublicationXMM-Newton and Chandra measurements of the AGN intrinsic absorption: dependence on luminosity and redshift
We combine bright XMM-Newton data with the Chandra Deep Field South observations to explore the behavior of the intrinsic AGN absorption, as a function of...
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PublicationXMM-Newton and ESO observations of the two unidentified γ-ray sources 3EG J0616-3310 and 3EG J1249-8330
The limited angular resolution of γ-ray telescopes prevents a direct identification of the majority of sources detected so far. This is particularly true for...