214 citations · 801 across the 20 of their papers we have counts for
20 papers
Generation of Correlated Time Series for X-ray Astronomy Applications
Seth Rowan Larner, Michael A. Nowak, Jörn Wilms
Cross-spectral methods have become essential for studying accretion physics in X-ray binaries and active galactic nuclei, where coherence and phase lag measurements constrain physi…
Systematic assessment of disk truncation in the black hole X-ray binary Swift J1727.8-1613 using NICER
Ole König, James F. Steiner, Niek Bollemeijer +20
The 2023/24 NICER monitoring campaign of the 7 Crab bright black hole X-ray binary Swift J1727.8-1613 covered the outburst in almost all accretion states. High-quality data are ava…
Transient X-ray Sources as Extremely Eccentric Mass-Transfer Binaries with Compact Companions
Jonathan I. Katz, Michael A. Nowak
It has long been suggested that X-ray transients are produced at periastron of stellar-compact object binaries with eccentric orbits. Recoil of matter evaporated from the star by X…
Unprecedentedly bright X-ray flaring in Cygnus X-1 observed by INTEGRAL
P. Thalhammer, T. Bouchet, J. Rodriguez +15
We study three extraordinarily bright X-ray flares originating from Cyg X-1 seen on 2023 July 10 detected with INTEGRAL. The flares had a duration on the order of only ten minutes…
Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER
Ole König, Guglielmo Mastroserio, Thomas Dauser +19
The Neutron Star Interior Composition Explorer (NICER) monitoring campaign of Cyg X-1 allows us to study its spectral-timing behavior at energies keV across all states. The…
Rapid Variability of Mrk 421 During Extreme Flaring as Seen Through the Eyes of XMM-Newton
A. Gokus, J. Wilms, M. Kadler +31
By studying the variability of blazars across the electromagnetic spectrum, it is possible to resolve the underlying processes responsible for rapid flux increases, so-called flare…