173 citations · 2.4k across the 91 of their papers we have counts for
12 papers · 1 filter
Breaking the symmetry: X-ray polarization from a spreading layer on a tilted weakly magnetized neutron star
Anna Bobrikova, Alexandra Veledina, Juri Poutanen +1
When modeling the emission from an X-ray binary system, we often assume that the rotational axis of the compact object is aligned with that of the binary system. While often consid…
CHASE: Channel-Aligned Structure Exploitation for Geometry-Aware Model Engineering
Wei Wang, Wei Jiang, Ziran Liu
Geometric and Spectral Alignment (GSA) characterizes trained networks through spectral concentration, physical-channel alignment, support structure, and changes in singular bases.…
Inelastic scattering effects on polarization predictions for cold and warm atmospheres in the X-rays
J. Podgorný, L. Marra, M. Dovčiak +8
X-ray polarization models of accreting compact objects often assume the so-called Chandrasekhar-Sobolev polarization prescription for elastic Thomson scattering in electron-scatter…
EXPO: a quantum leap in fast, wide-band X-ray polarimetry for astrophysics
Paolo Soffitta, Sebastien Guillot, Ian Hutchinson +137
The Enhanced X-ray Polarimetry Observatory (EXPO) is a mission concept proposed to ESA as an M8 candidate, with a prospective launch in 2041. Building on the scientific success of…
Energy-dependent Optical/Near-infrared and X-ray Correlations in Swift J1727.8-1613
Ruican Ma, Federico Vincentelli, Diego Altamirano +5
We present a timing analysis of the black hole transient Swift J1727.8-1613 during its intermediate state. We use coordinated broadband X-ray observations from Insight-HXMT (2-150…
Peering through the dip: IXPE unveils the extended scattering environment of GX 13+1
Alessandro Di Marco, Fabio La Monaca, Luigi Stella +17
Neutron star low-mass X-ray binaries feature complex accretion geometries, often including an accretion disk corona or disk winds. Here, a study of the highly inclined dipping sour…
Accreting stellar-mass black holes
Greg Marcel, Bailey Tetarenko, Adam Ingram +3
Accreting stellar-mass black holes exhibit dramatic variability across the electromagnetic spectrum, including spectral state transitions, outbursts, and jet production, making the…
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…
From reflection to scattering: Polarimetric signatures of funnel-type outflows. Modeling obscured ultraluminous X-ray sources
Varpu Ahlberg, Alexandra Veledina, Eugene Churazov +1
Super-Eddington accretion onto compact objects is expected to produce optically thick outflows with a funnel-shaped cavity that may collimate the emission. At inclinations higher t…
Discovery of Strong Energy-Dependent X-ray Polarization in the Intermediate State of GS 1354-64
Swati Ravi, Lorenzo Marra, James F. Steiner +20
We report the discovery of significant X-ray polarization from the dynamically confirmed black hole X-ray binary (BHXB) GS 1354-64 during its 2025-2026 outburst, obtained with the…
X-ray polarization in the soft state of Cyg X-1
A. Niedzwiecki, M. Szanecki, A. Veledina +5
We aim to identify the physical mechanism responsible for the observed X-ray emission and polarization of Cyg X-1 in the soft state. We performed a detailed spectral analysis of X-…
Disc Winds From Accreting Systems in the 2040s
Noel Castro Segura, Virginia Cúneo, Francesco Tombesi +9
What does the temporal evolution of disc winds tell us about accreting systems and the accretion process? Studies of accretion-disc outflows across all mass scales, including accre…