187 citations · 1.4k across the 50 of their papers we have counts for
5 papers · 1 filter
On the role and origin of nonthermal electrons in hot accretion flows
Andrzej Niedzwiecki, Agnieszka Stepnik, Fu-Guo Xie
We study the X-ray spectra of tenuous, two-temperature accretion flows using a model involving an exact, Monte Carlo computation of the global Comptonization effect as well as gene…
Correlation between the photon index and X-ray luminosity of black hole X-ray binaries and active galactic nuclei: observations and interpretation
Qi-Xiang Yang, Fu-Guo Xie, Feng Yuan +4
We investigate the observed correlation between the 2--10 keV X-ray luminosity (in unit of the Eddington luminosity; ) and the photon index () of the X-r…
X-ray spectra of hot accretion flows
Andrzej Niedzwiecki, Fu-Guo Xie, Agnieszka Stepnik
We study radiative properties of hot accretion flows in a general relativistic model with an exact treatment of global Comptonization, developed in our recent works. We note a stro…
X-ray emission from hot accretion flows
Andrzej Niedzwiecki, Fu-Guo Xie, Agnieszka Stepnik
Radiatively inefficient, hot accretion flows are widely considered as a relevant accretion mode in low-luminosity AGNs. We study spectral formation in such flows using a refined mo…
Jet-dominated quiescent states in black hole X-ray binaries: the case of V404 Cyg
Fu-Guo Xie, Qi-Xiang Yang, Renyi Ma
The dynamical and radiative properties of the quiescent state (X-ray luminosity ) of black hole X-ray transients (BHXTs) remains unclear, mainly…