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Analytical techniques for polarimetric imaging of accretion flows in Schwarzschild metric
Vladislav Loktev, Alexandra Veledina, Juri Poutanen
Emission from an accretion disc around compact objects, such as neutron stars and black holes, is expected to be significantly polarized. The polarization can be used to put constr…
Black hole spin-orbit misalignment in the X-ray binary MAXI J1820+070
Juri Poutanen, Alexandra Veledina, Andrei V. Berdyugin +10
The observational signatures of black holes in x-ray binary systems depend on their masses, spins, accretion rate and the misalignment angle between the black hole spin and the orb…
The Evolution of Rapid Optical/X-ray Timing Correlations in the Initial Hard State of MAXI J1820+070
J. A. Paice, P. Gandhi, T. Shahbaz +11
We report on a multi-epoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXI J1820+070, a black hole low-mass X-ray binary system. The ob…
Hybrid Comptonization and Electron-Positron Pair Production in the Black-Hole X-Ray Binary MAXI J1820+070
Andrzej A. Zdziarski, Elisabeth Jourdain, Piotr Lubinski +6
We study X-ray and soft gamma-ray spectra from the hard state of the accreting black-hole binary MAXI J1820+070. We perform analysis of two joint spectra from NuSTAR and INTEGRAL,…
Accretion geometry of the black hole binary MAXI J1820+070 probed by frequency-resolved spectroscopy
Magnus Axelsson, Alexandra Veledina
The geometry of the inner accretion flow in the hard and hard-intermediate states of X-ray binaries remains controversial. Using NICER observations of the black hole X-ray binary M…
Fast infrared variability from the black-hole candidate MAXI J1535571 and tight constraints on the modelling
F. M. Vincentelli, P. Casella, D. Russell +7
We present the results regarding the analysis of the fast X-ray/infrared (IR) variability of the black-hole transient MAXI J1535571. The data studied in this work consist of two…