330 citations · 4.9k across the 99 of their papers we have counts for
11 papers · 1 filter
The ultraluminous X-ray source M81 X-6: a weakly magnetised neutron star with a precessing accretion disc?
Roberta Amato, Andres Gúrpide, Natalie A. Webb +2
We investigate the nature of the ULX M81 X-6, which has been suggested to harbour a neutron star (NS), by studying its long-term X-ray spectral and temporal evolution, using the ri…
Propeller states in locally super-critical ULXs
M. Middleton, A. Gurpide, D. J. Walton
An expected signature of the presence of neutron stars in the population of ultraluminous X-ray sources (ULXs) are large scale changes in X-ray luminosity, as systems reach spin eq…
A transient ultraluminous X-ray source in NGC 55
A. Robba, C. Pinto, F. Pintore +14
Ultraluminous X-ray sources (ULXs) are a class of accreting compact objects with X-ray luminosities above 10 erg s. The average number of ULXs per galaxy is still not…
The variability behavior of NGC 925 ULX-3
Hannah P. Earnshaw, Murray Brightman, Fiona A. Harrison +5
We report the results of a 2019-2021 monitoring campaign with Swift and associated target-of-opportunity observations with XMM-Newton and NuSTAR, examining the spectral and timing…
X-ray Eclipse Mapping Constrains the Binary Inclination and Mass Ratio of Swift J1858.6-0814
Amy H. Knight, Adam Ingram, Matthew Middleton
X-ray eclipse mapping is a promising modelling technique, capable of constraining the mass and/or radius of neutron stars (NSs) or black holes (BHs) in eclipsing binaries and probi…
Constraining Energy-dependent emissivity profiles of AGN inflows
D. I. Ashton, M. J. Middleton
The emissivity of the accretion flow is a key parameter affecting the shape of both the energy and variability power spectrum of AGN. We explore the energy-dependence of the power…