479 citations · 4.2k across the 85 of their papers we have counts for
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Systematically Revisiting All NuSTAR Spins of Black Holes in X-Ray Binaries
Paul A. Draghis, Jon M. Miller, Elisa Costantini +4
We extend our recent work on black hole spin in X-ray binary systems to include an analysis of 189 archival NuSTAR observations from 24 sources. Using self-consistent data reductio…
Characterizing X-ray, UV, and optical variability in NGC 6814 using high-cadence Swift observations from a 2022 monitoring campaign
Adam G. Gonzalez, Luigi C. Gallo, Jon M. Miller +3
We present the first results of a high-cadence Swift monitoring campaign ( visits per day for days) of the Seyfert 1.5 galaxy NGC 6814 characterizing its variability thro…
A re-emerging bright soft-X-ray state of the changing-look Active Galactic Nucleus 1ES~1927+654: a multi-wavelength view
Ritesh Ghosh, Sibasish Laha, Eileen Meyer +24
1ES1927+654 is a nearby active galactic nucleus that has shown an enigmatic outburst in optical/UV followed by X-rays, exhibiting strange variability patterns at timescales of mont…
A Colourful Analysis: Probing the Eclipse of the Black Hole and Central Engine in NGC 6814 Using X-ray Colour-Colour Grids
Ben Pottie, Luigi Gallo, Adam Gonzalez +1
Eclipsing of the X-ray emitting region in active galactic nuclei (AGN) is a potentially powerful probe to examine the AGN environment and absorber properties. Here we study the ecl…
Applying wavelet analysis to the X-ray light curves of active galactic nuclei and quasi-periodic eruptions
Akshay Ghosh, L. C. Gallo, A. G. Gonzalez
In this work, we examine the application of the wavelet transform to the X-ray timing analyses of active galactic nuclei (AGN) and quasi-periodic eruption sources (QPEs). Several s…
Unveiling the small-scale jets in the rapidly growing supermassive black hole IZw1
Xiaolong Yang, Su Yao, Luigi C. Gallo +10
Accretion of black holes at near-Eddington or super-Eddington rates is the most powerful episode that drives black hole growth, and it may work in several types of objects. However…