Towards precision measurements of accreting black holes using X-ray reflection spectroscopy

C Bambi, LW Brenneman, T Dauser, JA Garcia… - Space Science …, 2021‏ - Springer
Relativistic reflection features are commonly observed in the X-ray spectra of accreting black
holes. In the presence of high quality data and with the correct astrophysical model, X-ray …

Polarized X-rays from windy accretion in Cygnus X-1

J Poutanen, A Veledina… - The Astrophysical …, 2023‏ - iopscience.iop.org
Recent X-ray polarimetric data on the prototypical black hole X-ray binary Cyg X-1 from the
Imaging X-ray Polarimetry Explorer present tight constraints on accretion geometry in the …

The INTEGRAL view on black hole X-ray binaries

SE Motta, J Rodriguez, E Jourdain, M Del Santo… - New Astronomy …, 2021‏ - Elsevier
INTEGRAL is an ESA mission in fundamental astrophysics that was launched in October
2002. It has been in orbit for over 18 years, during which it has been observing the high …

Radiative plasma simulations of black hole accretion flow coronae in the hard and soft states

J Nättilä - Nature Communications, 2024‏ - nature.com
Stellar-mass black holes in x-ray binary systems are powered by mass transfer from a
companion star. The accreted gas forms an accretion disk around the black hole and emits x …

Recovery of the X-ray polarisation of Swift J1727. 8− 1613 after the soft-to-hard spectral transition

J Podgorný, J Svoboda, M Dovčiak, A Veledina… - Astronomy & …, 2024‏ - aanda.org
We report on the detection of X-ray polarisation in the black-hole X-ray binary Swift J1727.
8− 1613 during its dim hard spectral state by the Imaging X-ray Polarimetry Explorer (IXPE) …

Correlation between the photon index and X-ray luminosity of black hole X-ray binaries and active galactic nuclei: observations and interpretation

QX Yang, FG **e, F Yuan, AA Zdziarski… - Monthly Notices of …, 2015‏ - academic.oup.com
We investigate the observed correlation between the 2–10 keV X-ray luminosity (in unit of
the Eddington luminosity; l X≡ LX/L Edd) and the photon index (Γ) of the X-ray spectrum for …

Radiative magnetic reconnection near accreting black holes

AM Beloborodov - The Astrophysical Journal, 2017‏ - iopscience.iop.org
A radiative mechanism is proposed for magnetic flares near luminous accreting black holes.
It is based on recent first-principle simulations of magnetic reconnection, which show a …

MAXI J1820+ 070 X-ray spectral-timing reveals the nature of the accretion flow in black hole binaries

T Kawamura, C Done, M Axelsson… - Monthly Notices of the …, 2023‏ - academic.oup.com
Black hole X-ray binaries display significant stochastic variability on short time-scales (0.01–
100 s), with a complex pattern of lags in correlated variability seen in different energy bands …

Swift observations of V404 Cyg during the 2015 outburst: X-ray outflows from super-Eddington accretion

SE Motta, JJE Kajava… - Monthly Notices of …, 2017‏ - academic.oup.com
The black hole (BH) binary V404 Cyg entered the outburst phase in 2015 June after 26 yr of
X-ray quiescence, and with its behaviour broke the outburst evolution pattern typical of most …

Doughnut strikes sandwich: the geometry of hot medium in accreting black hole X-ray binaries

J Poutanen, A Veledina, AA Zdziarski - Astronomy & Astrophysics, 2018‏ - aanda.org
We study the effects of the mutual interaction of hot plasma and cold medium in black hole
binaries in their hard spectral state. We consider a number of different geometries. In …