Advection of Accelerated Electrons in Radio/X-ray Knots of AGN Jets
arXiv:2206.07324 · doi:10.1093/mnras/stac1692
Abstract
The X-ray emission from the knots of the kilo-parsec scale jet of active galactic nuclei (AGN) suggests the high energy emission process is different from the radio/optical counterpart. Interpretation based on the Inverse Compton scattering of cosmic microwave photons has been ruled out through Fermi gamma-ray observations for low redshift sources. As an alternate explanation, synchrotron emission from a different electron population is suggested. We propose a model considering the advected electron distribution from the sites of particle acceleration in AGN knots. This advected electron distribution is significantly different from the accelerated electron distribution and satisfies the requirement of the second electron population. The synchrotron emission from the accelerated and the advected electron distribution can successfully reproduce the observed radio to X-ray fluxes of the knots of 3C 273. For the chosen combination of the model parameters, the spectrum due to inverse Compton scattering of cosmic microwave photons falls within the Fermi gamma-ray upper limits.
References in corpus (11)
- Fermi acceleration in astrophysical jets
- New Chandra observations of the jet in 3C273. I. Softer X-ray than radio spectra and the X-ray emission mechanism
- Shedding New Light on the 3C 273 Jet with the Spitzer Space Telescope
- Ruling out IC/CMB X-rays in PKS 0637-752 and the Implications for TeV Emission from Large-Scale Quasar Jets
- Quasar X-ray jets: Gamma-ray diagnostics of the synchrotron and inverse Compton hypotheses, the case of 3C 273
- Comparing 3C 120 jet emission at small and large scales
- Constraining the shear acceleration model for the X-ray emission of large-scale extragalactic jets
- Inverse-Compton scattering in the resolved jet of the high-redshift quasar PKS J1421-0643
- A Two Zone Synchrotron Model for the Knots in the M87 Jet
- Possible Proton Synchrotron Origin of X-Ray & Gamma Ray Emission in Large Scale Jet of 3C 273
- An asymmetrical synchrotron model for knots in the 3C 273 jet