Diffusive synchrotron radiation from extragalactic jets

Abstract

Flattenings of nonthermal radiation spectra observed from knots and interknot locations of the jets of 3C273 and M87 in UV and X-ray bands are discussed within modern models of magnetic field generation in the relativistic jets. Specifically, we explicitly take into account the effect of the small-scale random magnetic field, probably present in such jets, which gives rise to emission of Diffusive Synchrotron Radiation, whose spectrum deviates substantially from the standard synchrotron spectrum, especially at high frequencies. The calculated spectra agree well with the observed ones if the energy densities contained in small-scale and large-scale magnetic fields are comparable. The implications of this finding for magnetic field generation, particle acceleration, and jet composition are discussed.

5 pages with 2 figures, MNRAS Letters, accepted

References in corpus (7)

• Particle Acceleration and Magnetic Field Generation in Electron-Positron Relativistic Shocks
• The X-ray Emissions from the M87 Jet: Diagnostics and Physical Interpretation
• The Influence of an Ambient Magnetic Field on Relativistic Collisionless Plasma Shocks
• The radio-ultraviolet spectral energy distribution of the jet in 3C273
• The Origin of Complex Behavior of Linearly Polarized Components in Parsec-Scale Jets
• Ultraviolet HST Observations of the Jet in M87
• Filamentary jets as a cosmic-ray "Zevatron"

Cited by in corpus (9)

• The energy distribution of relativistic electrons in the kilo-parsec scale jet of M87 with Chandra
• Diffusive Synchrotron Radiation from Pulsar Wind Nebulae
• Ultra-High Energy Cosmic-Ray Acceleration in the Jet of Centaurus A
• A Two Zone Synchrotron Model for the Knots in the M87 Jet
• Diffusive radiation in Langmuir turbulence produced by jet shocks
• Diffusive Radiation in One-dimensional Langmuir Turbulence
• Jitter radiation images, spectra, and light curves from a relativistic spherical blastwave
• Suppression of resistive hose instability in a relativistic electron-positron flow
• Radiation from relativistic jets