Monte Carlo simulation of the Compton scattering and disk reflection of a cylinder with hot electrons moving away from a black hole
arXiv:2510.13249 · doi:10.3847/1538-4357/ae0707
Abstract
For accreting black holes (BHs), the lamp-post scenario is a simple and popular model: a hot and point-like corona is located above the black hole, irradiating the accretion disk with hard X-ray radiation, which is believed to be generated by inverse Compton scattering in the corona. Although the lamp-post model successfully explains the disk reflection component, it fails to address the origin of seed photons and the geometry of the hot corona, because this model simplistically treats the corona as a point-like source generating a cutoff powerlaw spectrum. In this paper, we make simulations on a possible physical realization of the lamp-post scenario: the shape of the scattering zone is set to be a cylinder, corresponding to the jet base near a BH. The source of seed photons in this system is assumed to be the multicolor blackbody radiation of the accretion disk. In our simulations, the Compton scattering process is simulated with a custom Monte Carlo program based on the Geant4 package and the disk reflection process is simulated with the xilconv model in XSPEC. Our simulation results have confirmed that the relativistic motion of the jet can weaken or even completely suppress the reflection of the accretion disk, and simultaneously, the Comptonization of disk photons in the jet can still make a major contribution to the observed X-ray spectrum in high energy range. We discuss the implications of our simulation results, in light of the recent observations of a very weak reflection component in the presence of a strong hard X-ray radiation from the outburst of Swift J1727.8-1613.
arXiv comment26 pages, 27 figures, 2 tables, submitted
References in corpus (29)
- Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
- Going with the flow: can the base of jets subsume the role of compact accretion disk coronae?
- A light bending model for the X-ray temporal and spectral properties of accreting black holes
- X-ray reflected spectra from accretion disk models. III. A complete grid of ionized reflection calculations
- The Two-Phase Pair Corona Model for Active Galactic Nuclei and X-ray Binaries: How to Obtain Exact Solutions
- Plasma Ejection from Magnetic Flares and the X-ray Spectrum of Cygnus X-1
- X-ray reflected spectra from accretion disk models. I. Constant density atmospheres
- X-ray reflection spectra from ionized slabs
- Understanding X-ray reflection emissivity profiles in AGN: Locating the X-ray source
- Non-LTE Models and Theoretical Spectra of Accretion Disks in Active Galactic Nuclei. IV. Effects of Compton Scattering and Metal Opacities
- Spectral and temporal properties of Compton scattering by mildly relativistic thermal electrons
- Towards precision measurements of accreting black holes using X-ray reflection spectroscopy
- Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
- Constraining Jet/Disk Geometry and Radiative Processes in Stellar Black Holes XTE J1118+480 and GX 339-4
- Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-Timing Analysis
- Modelling spectral and timing properties of accreting black holes: the hybrid hot flow paradigm
- Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070
- Truncated disc versus extremely broad iron line in XTE J1650-500
- Doughnut strikes sandwich: the geometry of hot medium in accreting black hole X-ray binaries
- Constraining the size of the corona with fully relativistic calculations of spectra of extended corona. I - the Monte Carlo radiative transfer code
- Modelling the high mass accretion rate spectra of GX 339-4: Black hole spin from reflection?
- Relativistic X-ray Reflection Models for Accreting Neutron Stars
- Revealing structure and evolution within the corona of the Seyfert galaxy I Zw 1
- NICER, NuSTAR and Insight-HXMT views to the newly discovered black hole X-ray binary Swift J1727.8--1613
- Multi-timescale reverberation mapping of Mrk 335
- Estimating the size of X-ray lamppost coronae in active galactic nuclei
- Investigating the impact of vertically extended coronae on X-ray reverberation mapping
- Testing The Lamp-Post and Wind Reverberation Models with XMM-Newton Observations of NGC 5506
- Monte-Carlo simulations on possible collimation effects of outflows to fan-beamed emission of ultraluminous accreting X-ray pulsars