General relativistic polarized radiative transfer with inverse Compton scatterings

Abstract

We present {\tt radpol} - a numerical scheme for integrating multifrequency polarized radiative transfer equations along rays propagating in a curved spacetime. The scheme includes radiative processes such as synchrotron emission, absorption, Faraday rotation and conversion, and, for the first time, relativistic Compton scatterings including effects of light polarization. The scheme is fully covariant and is applicable to model radio-$\gamma$-ray emission and its polarization from, e.g., relativistic jets and accretion flows onto black holes and other exotic objects described in alternative metric theories and modeled semi-analytically or with time-dependent magnetohydrodynamical simulations. We perform a few tests to validate the implemented numerical algorithms that handle light polarization in curved spacetime. We demonstrate application of the scheme to model broadband emission spectra from a relativistically hot, geometrically thick coronal-like inflow around a supermassive black hole where the disk model is realized in a general relativistic magnetohydrodynamical simulation.

arXiv comment9 pages, 4 figures, accepted for publication in MNRAS

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Cited by in corpus (12)

• First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
• Polarized Image of Equatorial Emission in the Kerr Geometry
• Jets, disc-winds and oscillations in general relativistic, magnetically driven flows around black hole
• Polarized image of a rotating black hole in Scalar-Tensor-Vector-Gravity theory
• Polarized image of an equatorial emitting ring around a 4D Gauss-Bonnet black hole
• Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration
• Polarized image of a rotating black hole surrounded by a cold dark matter halo
• Electromagnetic signatures of strong-field gravity from accreting black holes
• A New Fast Monte Carlo Code for Solving Radiative Transfer Equations based on Neumann Solution
• Viscous torque in turbulent magnetized AGN accretion disks and its effects on EMRI's gravitational waves
• Polarization-sensitive Compton scattering by accelerated electrons
• PATOKA: Simulating Electromagnetic Observables of Black Hole Accretion