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 (29)
- The X-Ray Jet of PKS 0637-752: Inverse Compton Radiation from the Cosmic Microwave Background ?
- X-ray Emission from Extragalactic Jets
- Radio and X-ray observations of the jet in Centaurus A
- X-ray Emission Properties of Large Scale Jets, Hotspots and Lobes in Active Galactic Nuclei
- Fermi acceleration in astrophysical jets
- A survey of extended radio jets in AGN with Chandra and HST: First Results
- 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
- Deep Chandra observations of Pictor A
- Ruling out IC/CMB X-rays in PKS 0637-752 and the Implications for TeV Emission from Large-Scale Quasar Jets
- Electron Acceleration and Time Variability of High Energy Emission from Blazars
- Chandra and HST observations of gamma-ray blazars: comparing jet emission at small and large scales
- Quasar X-ray jets: Gamma-ray diagnostics of the synchrotron and inverse Compton hypotheses, the case of 3C 273
- Fermi Rules Out the IC/CMB Model for the Large Scale Jet X-ray Emission of 3C 273
- Synchrotron vs Compton Interpretations for Extended X-ray Jets
- The X-ray Jet of 3C 120: Evidence for a Non-standard Synchrotron Spectrum
- Radio/X-ray Offsets of Large Scale Jets Caused by Synchrotron Time Lags
- X-ray Radiation Mechanisms and Beaming Effect of Hot Spots and Knots in Active Galactic Nuclear Jets
- Broadband Spectral Fitting of Blazars using XSPEC
- Chandra & HST Imaging of the Quasars PKS B0106+013 & 3C345: Inverse Compton X-rays and Magnetized Jets
- 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
- Deep Multiwaveband Observations of the Jets of 0208-512 and 1202-262
- The Origin of the X-ray Emission in Two Well-Aligned Extragalactic Jets: The Case for IC/CMB
- 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
- Leptonic or Hadronic Emission: X-Ray Radiation Mechanism of Large-scale Jet Knots in 3C 273