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.

9 pages, 4 figures, accepted for publication in MNRAS

References in corpus (4)

• Constraining the size of the corona with fully relativistic calculations of spectra of extended corona. I - the Monte Carlo radiative transfer code
• Polarization signatures of strong gravity in AGN accretion discs
• Algorithms And Programs For Strong Gravitational Lensing In Kerr Space-time Including Polarization
• Covariant polarized radiative transfer on cosmological scales for investigating large-scale magnetic field structures

Cited by in corpus (5)

• 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 a rotating black hole surrounded by a cold dark matter halo
• Polarization-sensitive Compton scattering by accelerated electrons
• PATOKA: Simulating Electromagnetic Observables of Black Hole Accretion