44 citations · 123 across the 11 of their papers we have counts for
11 papers
Constraining black hole spin in PG 1535+547 amidst complex multi-layered absorption
A. Madathil-Pottayil, D. J. Walton, Jiachen Jiang +7
We present a spectroscopic analysis of XMM-Newton and NuSTAR observations of the 'complex' NLS1 PG 1535+547 at redshift . These observations span three epochs: 2002 and 20…
Evidence of mutually exclusive outflow forms from a black hole X-ray binary
Zuobin Zhang, Jiachen Jiang, Francesco Carotenuto +13
Accretion onto black holes often leads to the launch of outflows that significantly influence their surrounding environments. The two primary forms of these outflows are X-ray disk…
Decoding Cygnus X-2: The Critical Role of Reflection in IXPE Data
Honghui Liu, Jiachen Jiang, Adam Ingram +10
We present a spectro-polarimetric re-analysis of the first IXPE observation of Cygnus X-2 which we determine to be mainly in the normal branch, from quasi-simultaneous observations…
Non-Equilibrium Thermodynamics of Black-Hole Coronae: QPOs, Turbulence, and Jets
Vanessa López-Barquero, Alejandro Jenkins, Christopher S. Reynolds +1
The variability of X-rays observed from accreting black hole systems, including quasi-periodic oscillations (QPOs), suggests a complex nonlinear dynamics in the corona. Here, we pr…
A rapid black hole spin or emission from the plunging region?
Andrew Mummery, Jiachen Jiang, Adam Ingram +2
Emission from within the plunging region of black hole accretion flows has recently been detected in two X-ray binary systems. There is, furthermore, a possible discrepancy between…
NuSTAR observations of a varying-flux quasar in the Epoch of Reionization
Lea Marcotulli, Thomas Connor, Eduardo Bañados +13
With enough X-ray flux to be detected in a 160s scan by SRG/eROSITA, the quasar CFHQS J142952+544717 is, by far, the most luminous X-ray source known at . We pres…
A blazar in the epoch of reionization
Eduardo Banados, Emmanuel Momjian, Thomas Connor +21
Relativistic jets are thought to play a crucial role in the formation and evolution of massive galaxies and supermassive black holes. Blazars, which are quasars with jets aligned a…
Plunging region emission in the X-ray binary MAXI J0637430
Andrew Mummery, Jiachen Jiang, Andrew Fabian
On the second of November 2019 the black hole X-ray binary MAXI J0637430 went into outburst, at the start of which it was observed in a thermal ``disc-dominated'' state. High ph…
Continuum emission from within the plunging region of black hole discs
Andrew Mummery, Adam Ingram, Shane Davis +1
The thermal continuum emission observed from accreting black holes across X-ray bands has the potential to be leveraged as a powerful probe of the mass and spin of the central blac…
A NICER Discovery of a Low-Frequency Quasi-Periodic Oscillation in the Soft-Intermediate State of MAXI J1535-571
A. L. Stevens, P. Uttley, D. Altamirano +17
We present the discovery of a low-frequency Hz quasi-periodic oscillation (QPO) feature in observations of the black hole X-ray binary MAXI J1535-571 in its soft-inte…
Temperature Structure in the Perseus Cluster Core Observed with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192
The present paper investigates the temperature structure of the X-ray emitting plasma in the core of the Perseus cluster using the 1.8--20.0 keV data obtained with the Soft X-ray S…