Anisotropic Photon and Electron Scattering without Ultrarelativistic Approximation
arXiv:2211.15691 · doi:10.1103/PhysRevD.107.063026
Abstract
Interactions between photons and electrons are ubiquitous in astrophysics. Photons can be down scattered (Compton scattering) or up scattered (inverse Compton scattering) by moving electrons. Inverse Compton scattering, in particular, is an essential process for the production of astrophysical gamma rays. Computations of inverse Compton emission typically adopts an isotropic or an ultrarelativistic assumption to simplify the calculation, which makes them unable to broadcast the formula to the whole phase space of source particles. In view of this, we develop a numerical scheme to compute the interactions between anisotropic photons and electrons without taking ultrarelativistic approximations. Compared to the ultrarelativistic limit, our exact results show major deviations when target photons are down scattered or when they possess energy comparable to source electrons. We also consider two test cases of high-energy inverse Compton emission to validate our results in the ultrarelativistic limit. In general, our formalism can be applied to cases of anisotropic electron-photon scattering in various energy regimes, and for computing the polarizations of the scattered photons.
arXiv comment11 pages, 8 figures, comments are welcome
References in corpus (40)
- Diffuse continuum gamma rays from the Galaxy
- Diffuse Galactic continuum gamma rays. A model compatible with EGRET data and cosmic-ray measurements
- TeV Gamma Rays from Geminga and the Origin of the GeV Positron Excess
- A new determination of the extragalactic diffuse gamma-ray background from EGRET data
- The observable effects of a photospheric component on GRB's and XRF's prompt emission spectrum
- Spectral Properties of Blast Wave Models of Gamma-Ray Burst Sources
- Synchrotron and SSC Emission and the Blast-Wave Model of Gamma-Ray Bursts
- eXTP -- enhanced X-ray Timing and Polarimetry Mission
- Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun
- Using HAWC to Discover Invisible Pulsars
- Anisotropic inverse Compton scattering in the Galaxy
- Gamma-ray emission from the solar halo and disk: a study with EGRET data
- TeV Halos are Everywhere: Prospects for New Discoveries
- On high-energy particles in accretion disk coronae of supermassive black holes: implications for MeV gamma rays and high-energy neutrinos from AGN cores
- The Polarization Properties of Inverse Compton Emission and Implications for Blazar Observations with the GEMS X-Ray Polarimeter
- Time-dependent modeling of radiative processes in hot magnetized plasmas
- Time dependent numerical model for the emission of radiation from relativistic plasma
- Synchrotron and inverse-Compton emission from blazar jets I: a uniform conical jet model
- Gamma-rays from halos around stars and the Sun
- First Observation of Time Variation in the Solar-Disk Gamma-Ray Flux with Fermi
- Gamma-ray Astrophysics in the MeV Range: the ASTROGAM Concept and Beyond
- Evidence for a New Component of High-Energy Solar Gamma-Ray Production
- High-Energy Radiation from Remnants of Neutron Star Binary Mergers
- X-ray Polarization in Relativistic Jets
- Unexpected Dip in the Solar Gamma-Ray Spectrum
- TeV Solar Gamma Rays From Cosmic-Ray Interactions
- Describing correlated observations of neutrino and gamma ray flares from the blazar TXS 0506+056 with proton blazar model
- Inverse Compton scattering in mildly relativistic plasma
- Anisotropic inverse Compton scattering from the trans-relativistic to the ultra-relativistic regime and application to the radio galaxies
- High-energy emission as a test of the prior emission model for gamma-ray burst afterglows
- StellarICS: Inverse Compton Emission from the Quiet Sun and Stars from keV to TeV
- Dissecting the Compton scattering kernel I: Isotropic media
- Theory of Compton scattering by anisotropic electrons
- Gamma-ray burst polarization via Compton scattering process
- Numerical computation of isotropic Compton scattering
- The Role of Inverse Compton Scattering in Solar Coronal Hard X-ray and Gamma-ray Sources
- A New Component from the Quiet Sun: Synchrotron Radiation from Galactic Cosmic-Ray Electrons
- Transport of Cosmic ray electrons from 1 AU to the Sun
- External Compton Scattering in Blazar Jets and the Location of the Gamma-Ray Emitting Region
- The beaming pattern of External Compton Emission from relativistic outflows