From the 1 of 6 linked papers with an AI index.
6 papers
A systematic assessment of the short-term X-ray behaviour of the Cas analogues
Robbie Webbe, Yaël Nazé, N. A. Webb
The paper systematically analyzes short‑term (kilosecond) X‑ray variability of γ Cas analogues to test whether periodic signals indicate accretion onto magnetic white dwarfs.
AGN obscuration in optical and X-rays: Host properties and the interplay of nuclear and galactic gas and dust in a combined SDSS-XMM sample
G. Mountrichas, F. J. Carrera, E. Quintin +3
We investigate the link between optical obscuration and X-ray absorption in active galactic nuclei (AGN) by combining X-ray spectroscopy from 4XMM-DR11 with SDSS DR16Q spectroscopy…
STONKS first results: Long-term transients in the XMM-Newton Galactic plane survey
Robbie Webbe, E. Quintin, N. A. Webb +5
The study of astronomical transients at high energies provides insights into some of the most extreme physical events in the universe; however, carrying out their detection and fas…
Needle in a Poissonian haystack -- An X-ray astronomer's guide to QPE fishing
E. Quintin, N. Khan, N. A. Webb +4
After six years of studies following the discovery of GSN069, a link is starting to appear between the elusive Quasi-Periodic Eruptions (QPEs) and other types of nuclear transients…
The population of hyperluminous X-ray sources as seen by XMM-Newton
Roberta Amato, Erwan Quintin, Hugo Tranin +7
Ultraluminous and hyperluminous X-ray sources (ULXs and HLXs) are among the brightest astrophysical objects in the X-ray sky. While ULXs most likely host stellar-mass compact objec…
A catalogue of candidate milli-parsec separation massive black hole binaries from long term optical photometric monitoring
Vincent Foustoul, Natalie A. Webb, Raphaël Mignon-Risse +3
The role of mergers in the evolution of massive black holes is still unclear, and their dynamical evolution, from the formation of pairs to binaries and the final coalescence, carr…