22 papers
Studying the Variable Continuum and Emission Line Spectrum of 4U 1700-377 using NuSTAR's Stray Light
Colin J Bourque, McKinley C Brumback, Brian W Grefenstette +4
The high-mass X-ray binary 4U 1700-377 shows strong variation in brightness on timescales of hundreds of seconds due to accretion from a highly clumped stellar wind from the compan…
Emulation of non-linear 1D spectral models: relativistic X-ray reflection
Benjamin J. Ricketts, Tin Hadži VeljkoviÄ, Daniela Huppenkothen +4
The use of machine learning techniques to approximate computationally expensive models has become increasingly prevalent in a wide variety of fields within astronomy. We discuss th…
The strength of Type-C quasi-periodic oscillations in black hole X-ray binaries correlates with the jet inclination
F. M. Vincentelli, N. Bollemeijer, A. Veledina +10
X-ray quasi-periodic oscillations (QPOs) are a characteristic feature of low-mass X-ray binaries (LMXBs). These oscillations have been studied for decades and revealed a rich and c…
Dust grain chemistry in the diffuse ISM towards the black hole transient GX 339-4
I. Psaradaki, L. Corrales, E. Costantini +10
We present results on X-ray absorption and the dust grain chemistry in the diffuse interstellar medium (ISM), based on a new Cycle 25 Chandra High Energy Transmission Grating Spect…
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…
Aql X-1 from dawn 'til dusk: the early rise, fast state transition and decay of its 2024 outburst
A. Marino, F. Coti Zelati, K. Alabarta +36
Transient Low-Mass X-ray Binaries (LMXBs) are usually first detected by all-sky X-ray monitors when they enter new outbursts, typically at X-ray luminosities above 10…